Yoga guide

Yoga for kidney health: chronic kidney disease, dialysis and transplants, the detox and kidney stone claims, what the evidence shows, and staying safe

Being active is good for people with kidney disease at every stage, and yoga can be a gentle way to do it. "Do not be scared to exercise," says the NHS, and kidney guidelines suggest building up to 150 minutes a week, or as much as you can manage. Yoga's own trials in kidney disease are few and small: seated yoga during dialysis is possible, and it may ease tiredness a little, but it hasn't been shown to improve kidney function.

No pose massages, detoxes or flushes your kidneys, and none dissolves or shifts a kidney stone. Yoga works alongside your kidney care (dialysis, medicines, and diet and fluid advice), not instead of it.

This guide explains chronic kidney disease (CKD), what the trials found, blood pressure, the detox and stone claims, how to practise on haemodialysis or peritoneal dialysis, with a fistula, after a transplant and with polycystic kidney disease, and the warning signs. It points you to a chair-based class to start with. Talk to your kidney team before you start.

The short version

Exercise is good at every stage

The NHS: "Do not be scared to exercise. Exercise is good for anyone with kidney disease, however severe." Kidney guidelines suggest at least 150 minutes of moderate activity a week, or as much as your heart and body allow, with strength, balance and flexibility work on 2 days. None of them mentions yoga, but yoga can cover the strength, balance and flexibility part.

Sources 1, 2, 3

The yoga trials are few and small

We found about 11 small controlled studies of 31 to 91 people, mostly unblinded, lasting 4 weeks to 6 months. The two best-run, small US trials of seated yoga during dialysis found it possible and safe, but it made no significant difference to physical function, mental health or walking. Small trials report a little less tiredness, pain and poor sleep.

Sources 4, 5, 6, 7

It hasn't been shown to improve kidney function

In the most-quoted trial, kidney blood tests didn't differ significantly between the groups after 6 months. One newer trial reported better results, but we could read only its summary and it hasn't been repeated.

Sources 8, 9

Blood pressure is where yoga may help most

Good blood pressure control protects your kidneys. Yoga lowered blood pressure by about 5/4 mmHg across 49 trials in general, with only 2 small trials in kidney disease. It adds to your tablets; it doesn't replace them.

Sources 10, 11

No pose detoxes your kidneys or shifts a stone

No study has tested any pose on kidney blood flow, kidney function or "detox", and your kidneys do their own filtering. Nothing dissolves most stones once they've formed. Water helps prevent them: the NHS suggests 2.5 to 3 litres a day for adults.

Sources 12, 13, 14, 15

Protect your fistula and mind your fluid

Keep weight, straps and pressure off a fistula arm, stay within your fluid allowance, skip hot rooms unless your team agrees, and ask your peritoneal dialysis or transplant team before tummy work and deep twists. The warning signs are below.

Sources 16, 17, 18

Kidney disease in plain words

Chronic kidney disease

The NHS: "Chronic kidney disease (CKD) is a long-term condition where the kidneys do not work as well as they should." It's common, more so with age and in people who are black or of south Asian origin, and there are usually no symptoms early on. It "only progresses to kidney failure in around 2 in 100 people with the condition", and heart and blood vessel disease is a bigger risk.

Source 1

Causes

The NHS lists high blood pressure and diabetes first, then high cholesterol, infections, inflammation, inherited cysts, blockages such as stones that keep coming back, and long-term use of some medicines. In the UK, diabetes was the most common known cause in people starting dialysis or having a transplant in 2024 (29.3%).

Sources 1, 19

Dialysis

"Dialysis is a procedure to remove waste products from your blood if your kidneys are not working properly." Haemodialysis usually means 3 sessions a week of around 4 hours, through a fistula (an artery and a vein joined in your arm). Peritoneal dialysis (PD) uses the lining of your tummy, through a soft tube (catheter), every day. At the end of 2024, 74,157 adults in the UK were on kidney replacement therapy, more than half with a transplant.

Sources 17, 19

Fluid on dialysis

"Once fluid is in your body, the only way of getting rid of it is by dialysis." Too much causes breathlessness, raised blood pressure and strain on the heart, which is why your team sets a fluid allowance that is "individual to you" and can change with how active you are and the weather.

Sources 20, 21

Transplants

"Most of the time, a single kidney is placed into either the right or left groin (lower abdomen)", through a cut in your lower tummy. Kidney Research UK notes that a transplanted kidney is less protected than your own, because it usually sits in the pelvis.

Sources 22, 23

Kidney stones

"Kidney stones are hard lumps that form in your kidneys." Small ones may cause no symptoms; larger ones can be very painful, usually starting in the side of your tummy or lower back. They're more likely if you don't drink enough water, and about 1 in 10 people get one in their lifetime.

Sources 15, 14

Polycystic kidney disease

The 2025 international guideline encourages 150 minutes a week of moderate activity plus strength training twice a week, and warns that large kidneys or a large liver can be injured in collision or contact sports.

Source 24

What the evidence says

Guidelines: be active, with no type namedStrong evidence

The international Kidney Disease: Improving Global Outcomes (KDIGO) guideline recommends "at least 150 minutes per week, or to a level compatible with their cardiovascular and physical tolerance". The UK Kidney Association adds strength, balance and flexibility on at least 2 days a week and says "Some physical activity is better than none". The National Institute for Health and Care Excellence (NICE) encourages exercise. None mentions yoga.

Sources 2, 3, 11

Exercise in general helpsStrong evidence

Across 45 trials in all stages of CKD, exercise improved fitness, walking, resting blood pressure and quality of life. On dialysis (89 trials), exercise probably improves walking distance and low mood (moderate certainty). Our exercise for kidney disease guide covers this.

Sources 25, 26

Seated yoga during dialysis is possibleMixed evidence

In two small US trials (31 and 69 people), yoga in the dialysis chair, with the fistula arm kept still, was feasible and caused no harm attributed to yoga. In the larger, better-run trial, 12 weeks made no significant difference to physical function, mental health or walking distance.

Sources 5, 6

Tiredness, pain and sleepMixed evidence

In a Turkish trial of 37 people on haemodialysis, 12 weeks of twice-weekly yoga eased pain, tiredness and sleep problems within the yoga group and improved grip strength; Cochrane rates the tiredness result as very low certainty. Small trials of hatha yoga, breathing practice and a breathing programme before dialysis report better quality of life or less tiredness. All are small and self-rated, with no attention-matched comparison.

Sources 27, 7, 28, 29, 30

Kidney function: not shownMixed evidence

In an Indian trial (50 people analysed), 6 months of yoga made no significant difference to creatinine (5.52 against 6.33) or urea, though the authors said it improved kidney function. Another Indian trial (81 people) reported creatinine 0.42 lower and estimated glomerular filtration rate (eGFR, a measure of how well the kidneys filter) 6.94 higher after 12 weeks, but we could read only its summary, so its methods are unclear, and it hasn't been repeated. A 2026 review of exercise and kidney function found no yoga trial to include.

Sources 8, 9, 31

Blood pressureMixed evidence

Blood pressure fell more with yoga in the Indian trial, but the yoga group started higher. Across 49 trials in the general population, yoga lowered it by about 5/4 mmHg, more with breathing and relaxation. A 2026 review of kidney disease estimated a bigger effect for mind-body exercise, but from only 3 groups.

Sources 8, 10, 32

How good is this evidence?Mixed evidence

Small, single-centre, mostly unblinded trials with self-rated results. Reviews that rank "mind-body therapy" highly for tiredness mix yoga with relaxation, meditation and Reiki. There are no yoga trials in peritoneal dialysis, polycystic kidney disease or kidney stones, and only breathing studies after a transplant.

Sources 4, 33

Kidney care carries the evidenceStrong evidence

"There's no cure for CKD, but treatment can help relieve the symptoms and stop it getting worse" (the NHS): medicines, blood pressure and blood sugar control, diet and, when needed, dialysis or a transplant. Yoga adds to that care.

Sources 1, 11

Blood pressure

Blood pressure targets

NICE's targets in CKD: below 140/90 (aiming for 120 to 139 systolic) if the protein leak in your urine is low, and below 130/80 (aiming for 120 to 129) if it is high, which means a urine albumin-to-creatinine ratio (ACR) of 70 or more.

Source 11

Breathe while you move

Breathe normally during strength exercises and don't hold your breath. Fast, forceful breathing such as kapalbhati and breath holds raised blood pressure while 20 adults did them, so keep to slow breathing.

Sources 34, 35

Keep your head up: our suggestion

With high or unsteady blood pressure, or diabetic eye disease, leave out headstand, shoulder stand and plough, and keep forward folds short, as our yoga for high blood pressure guide says. Come up slowly from lying or folding forward, especially after dialysis.

Yoga adds to your tablets

NICE dropped its old advice on relaxation therapies for blood pressure because of "insufficient evidence of benefit", while not wanting to stop people trying them. Yoga's effect is small; never stop or change a blood pressure tablet without your team.

Sources 36, 10

No pose detoxes your kidneys or shifts a stone

Twists and back bends don't massage or detox your kidneysMixed evidence

We found no study of any pose on kidney blood flow, kidney function or toxin removal. During exercise, blood flow to the kidneys falls while it goes to working muscles, and in the heat at rest it fell by about 11%. The British Dietetic Association: "Your body has numerous organs such as the skin, gut, liver and kidney, that continually 'detoxify' your body."

Sources 12, 37, 38, 13

Yoga doesn't dissolve or shift stonesStrong evidence

No study has tested yoga for stones. "Most of the time, if a kidney stone has formed, there is nothing that can dissolve it" (the US National Kidney Foundation); only uric acid stones can be dissolved, with medicine. Most small stones pass anyway: in the European guideline, almost 75% of stones under 5 mm passed on their own, after about 17 days on average.

Sources 39, 14, 40

The head-down tilt after stone treatment isn't yogaEmerging evidence

After shock wave treatment or laser surgery, a head-down tilt on a couch with tapping over the kidney and extra fluid, done in clinic for 10 to 20 minutes, helped fragments in the lower kidney clear (59.6% against 29% in 5 trials of 394 people, none at low risk of bias). That isn't a headstand at home, and none of the trials tested yoga. The UK leaflet after lithotripsy says go back to your regular activity the next day and drink more.

Sources 41, 42, 43

Jumping to shake a stone looseMixed evidence

There's no controlled trial. One 1989 series combined rope skipping with a herbal medicine and had no comparison group, and the roller coaster study used a model kidney, not people.

Sources 44, 45

Water helps prevent stonesStrong evidence

The NHS: "drink 2.5 to 3 litres of water each day if you're an adult", add fresh lemon juice, avoid lots of fizzy, caffeinated or alcoholic drinks, and keep salt down. If you're on a fluid allowance for dialysis, your team's advice comes first.

Sources 15, 46

Heat and sweatEmerging evidence

Hot days were followed by more people seeking care for stones, and a 90-minute Bikram class lost about 1.5 litres of sweat, only a quarter of it replaced during the class. Replace sweat after a warm class, unless you're on a fluid allowance.

Sources 47, 48

Yoga on dialysis, and your fistula

Looking after your fistula

Keep it clean, and avoid watches, bracelets and tight sleeves on that arm. Try not to lift heavy objects with it or sleep on it, don't have your blood pressure taken on it, and check the buzz (thrill) every day; if you can't feel it, contact your kidney team straight away.

Source 16

Your fistula arm in yoga

The UK guideline found no evidence that light upper-body resistance exercise harms a fistula, and the US National Kidney Foundation says not to put heavy pressure on your access arm. No study covers taking your body weight through that arm, so our editorial suggestion is to leave out plank, downward dog, side plank, crow and lying on that side unless your team says they're fine. On all fours, use fists or forearms, or do the move sitting.

Sources 3, 49, 50

Dialysis days

Haemodialysis can cause muscle cramps and dizziness during or shortly after a session. Kidney Care UK: "Rest for an hour or two after each session", and "It's fine to only be physically active on your better days." Gentle seated practice after resting suits dialysis days; standing practice suits other days (our suggestion). The UK guideline says exercise during dialysis is safe, avoiding the first 30 minutes of a session and your first 3 months of haemodialysis.

Sources 51, 52, 3

Yoga during dialysis

Only as part of your unit's programme, with staff there: the trials ran seated sessions in the dialysis chair in the first 2 hours of treatment, with the fistula arm kept still.

Sources 5, 6

Fluid

On dialysis, your team tells you how much to drink each day, because fluid builds up between sessions and too much can lead to heart failure. Needing a lot of fluid taken off at dialysis also leaves you tired and washed out. Don't drink extra for exercise beyond your allowance without asking your team (our editorial advice).

The National Kidney Federation adds that if you don't drink enough when you're sweating a lot, your blood pressure can drop and you can feel weak and dizzy when you stand, so get up slowly.

Sources 17, 52, 53, 54

Heat and hot yoga

Talk to your doctor before exercising in very hot and humid, or very cold, weather, and stop if you feel dizzy.

Kidney Care UK warns that people taking many kidney medicines are at particular risk of acute kidney injury if they get dehydrated. Hot yoga didn't change kidney function in healthy practitioners over a year, but nobody has studied it in kidney disease, and drinking far too much after a first Bikram class caused a dangerous drop in blood sodium in one woman. Skip hot yoga unless your kidney team agrees (our suggestion).

Sources 34, 55, 56, 57, 58

Peritoneal dialysis

Watch for hernias

PD "increases the chances of developing a hernia", by your belly button, near the catheter exit site or in your groin. The pressure inside your tummy rises with the amount of fluid and with posture, and is linked with leaks and hernias. Tell your team about any new lump or swelling.

Sources 18, 59

Advice differs between units

International recommendations on exercise in PD were published in 2022, but the full guideline was blocked to us, so we read only its summary and a university press release. That press release says activities that strain the tummy, such as sit-ups, should be avoided for several weeks after the catheter goes in. In an international survey, units gave different advice: 76% of people were told not to lift above a limit, and only 28% were told to drain before activity.

Sources 60, 61, 62

Ask your PD team: our editorial suggestion

Ask whether to practise with fluid in or drained, and which tummy work and twists suit you. Until they say otherwise, leave out forceful breathing (kapalbhati), boat pose, full planks and deep twists. One man on PD developed a groin hernia while practising kapalbhati, and one PD catheter ruptured during a stretching programme; each is a single case report.

Sources 63, 64

After a kidney transplant

The first weeks

Walk a little every day from the start to help prevent blood clots. NHS Blood and Transplant: "Avoid strenuous activities that can strain your stomach muscles for 4 to 6 weeks", and no lifting over 10 kg for at least 6 weeks. If your recovery is going well, moderate exercise is usually encouraged from 6 to 8 weeks.

Sources 65, 66, 67

Hernias

A hernia where the kidney was placed "happens in 5 to 10 out of 100 patients after a kidney transplant", and heavy lifting soon after makes one more likely. Tell your team about any new lump or bulge near your scar.

Source 67

Yoga after a transplant: our editorial suggestion

Breathing and walking first, then gentle chair yoga as your team allows. Leave out core work, deep twists, deep back bends and lying face down over your new kidney, which sits in your lower tummy, until your team agrees. Our organ transplant guide has the full timeline.

Sources 22, 23

How to practise, and how much

How much

Use yoga for the strength, balance and flexibility work the UK guideline asks for on 2 days a week, and walk or cycle towards 150 minutes a week. Two or 3 sessions a week of 20 to 30 minutes is our editorial starting point; the trials ran 2 or 3 times a week for 12 weeks.

Sources 3, 2, 27, 6

Talk to your kidney team first

Before starting or changing your exercise; if your medicines or dialysis schedule change; with a fever, joint or bone problems that get worse with exercise, or any change in your condition; and before taking any supplement.

Sources 55, 34, 2

Before a kidney test

Exercise can push urine protein and creatinine up for a while, and a single yoga class raised blood creatinine a little in healthy people. Avoid a hard session the day before a kidney blood or urine test (our suggestion).

Sources 2, 57

Build up gradually

Very high repetitions done suddenly can break down muscle and harm the kidneys: one healthy young woman needed treatment after 108 yoga-style squats in one go. Our rhabdomyolysis guide has the signs.

Sources 68, 69

A gentle option with a reason

The US National Kidney Foundation lists yoga among kidney-friendly exercises: "Yoga is a gentle exercise that can help with flexibility and strength. It can also help manage stress and improve balance."

Source 70

Sit and breathe

Slow breathing: at least 5 minutes, done regularly (the move's page). Breath reach: 5 breaths, breathing out for longer than in (the move's page); it puts no weight on a fistula arm. Alternate nostril breathing: 3 to 5 minutes once or twice a day, with no holds (the move's page). Seated upper-back lift: 3 to 5 holds of 3 to 5 seconds (the move's page).

Loosen in a chair, for tired or dialysis days

Seated march: 1 to 2 minutes; ankle circles: 10 slow circles each way with each foot (the move's page for each). Shoulder circles: 10 each way, slowly on the fistula side (our seated chair yoga class). Cat-cow sitting: 6 slow rounds; seated twist: 5 each side with 5-second holds, small with PD or a new transplant; seated side bend: 2 each side, holding 10 to 20 seconds (our chair yoga class).

Stand with a chair

Sit to stand: 8 to 10 slow stands with the chair against a wall (our yoga for diabetes class). Mountain pose: 5 to 10 slow breaths (the move's page). Chair pose: 2 holds of 3 breaths, arms forward, breathing out as you bend (our yoga for high blood pressure class). Warrior II and tree pose: 3 breaths each side, a hand on the chair; calf raises: 8 to 10 (our chair yoga class). Single-leg stand: 2 holds of 20 seconds each leg next to a counter (our editorial starting point).

Lying, if it suits you

Glute bridge: 2 sets of 8, breathing out as you lift (our yoga for high blood pressure class); ask your PD team first, and not in the first weeks after a transplant. Strap hamstring stretch: hold 20 to 30 seconds, breathing normally (the Leicester kidney team's stretching advice). Reclining bound angle: 2 minutes with cushions under your thighs (our yoga for high blood pressure class). Corpse pose: 5 minutes, then roll to your side and come up slowly (the move's page).

Walk

Start with 10 minutes and build to 30 minutes on at least 3 to 4 days a week, at a pace where you can talk but not sing (our exercise for kidney disease guide, from the Leicester kidney team).

Poses to change or leave out

These rest on kidney care advice and single case reports rather than trials of particular poses.

Weight through a fistula arm

Plank, downward dog, side plank, crow and lying on that side, unless your kidney team says they're fine. No straps or tight sleeves on that arm (our editorial suggestion, from the fistula care advice).

Sources 16, 49

Head-down poses

Headstand, shoulder stand and plough with high or unsteady blood pressure or diabetic eye disease. With low blood pressure after dialysis, the NHS advice is to get up slowly. Ask your doctor before legs up the wall if you have fluid build-up, as our wall yoga guide says.

Sources 35, 54

Breath holds and forceful breathing

Kapalbhati, bellows breath (bhastrika) and breath holds raise blood pressure while you do them. Keep to slow breathing.

Sources 35, 34, 63

Tummy strain with PD or after a transplant

Boat pose, full planks, deep twists and deep back bends such as camel, wheel and bow, until your PD or transplant team agrees. After a transplant, leave out lying face down over the new kidney too.

Sources 65, 18, 59

Hot yoga

Skip it unless your kidney team agrees, because of fluid allowances, low blood pressure and the risk of kidney injury with dehydration.

Sources 56, 53

"Kidney" sequences

Compressing, "massaging" or "warming" the kidneys does nothing that has been measured, so there's no need to choose poses for that reason.

Source 12

Free classes

Start with chair yoga 2 or 3 times a week (our editorial starting point), and use the shorter seated class on dialysis days after resting. Keep weight off a fistula arm in every class: do all-fours moves on fists or forearms, or sitting. The blood pressure and diabetes classes keep your head up; ask your PD team before the bridge. The strength and balance routines cover the 2 days a week the UK guideline asks for, and in the breathing class, use the slow breathing and leave out the holds.

Chair yoga for seniors

A free 20-minute chair yoga class for older adults: slow breathing, gentle seated stretches and twists, standing poses holding the chair, and a calm finish.

20 minBeginner18 movesA bench or box, Something with weight

Seated chair yoga: 15 minutes, no standing

A 15-minute chair yoga routine done entirely sitting: slow breathing, neck, shoulder and wrist stretches, seated twists and side bends, and a calm finish.

15 minBeginner16 movesA bench or box

Yoga for high blood pressure: a 40-minute balanced practice

Forty minutes of short-hold poses, slow breathing and a 10-minute relaxation, with no head-down poses or breath holds.

40 minBeginner14 movesA step, Firm cushion

Yoga for diabetes: a 35-minute head-up practice

A 35-minute yoga practice for diabetes that keeps your head up: slow breathing, standing strength, balance at a wall and a calm finish, with no breath holds.

35 minBeginner17 movesA bench or box, A wall

Gentle yoga for beginners

A 25-minute gentle yoga class for complete beginners and over-50s: slow breathing, a warm-up, supported standing poses, floor poses and a closing rest.

25 minBeginner14 movesNo equipment

Strength and balance exercises for seniors

A 40-minute strength and balance session for over-65s, built from the Otago home programme and NHS exercises, using a chair, a counter and a step.

40 minBeginner18 movesA bench or box, Something with weight

Chair exercises for seniors: a seated workout

A 20-minute seated workout for older adults who cannot stand for long: marching, leg and arm strength, posture, and sit-to-stands that lead back to standing.

20 minBeginner11 movesA bench or box, Something with weight

Breathing exercises to relax

A 6-minute breathing routine: slow breathing, crocodile breathing, alternate nostril breathing, box breathing and 4-7-8 breathing.

6 minBeginner5 movesNo equipment

Build up your walking

Both build up gradually towards 150 minutes a week. Fit the sessions around your dialysis days, and talk to your kidney team before you start.

Warning signs: when to stop and when to get help

These follow our exercise for kidney disease guide word for word. This is general information, not a diagnosis. A&E means accident and emergency.

Call 999 (911 in the US)

  • Your fistula or graft bleeds between dialysis sessions: press on it (a bottle top over the site helps), and tell the call handler you're bleeding from a dialysis fistula.
  • Chest pain that feels tight or like squeezing, or spreads to your arms, neck or jaw.
  • Severe difficulty breathing, or pale, blue or grey lips or skin.

Sources 51, 16, 71

Urgent GP appointment or NHS 111 if you're on dialysis

  • The skin around your fistula or tummy catheter is painful, swollen or a different colour.
  • Tummy pain, or a lump in your tummy.
  • A very high temperature, or feeling hot, cold or shivery.
  • Your heart is beating faster than usual.
  • You can't pee, or you're peeing much less than usual.
  • PD drainage fluid that looks cloudier than usual or has white flecks in it.

Source 51

Your fistula

  • You can't feel the buzz (thrill): contact your kidney team straight away.
  • It's hot, swollen or painful, or your fingers are cold, painful or weaker: get urgent help.

Source 16

After a transplant: contact your transplant team

  • A temperature of 38C or above, or feeling hot and shivery.
  • A severe headache, diarrhoea or vomiting.
  • Shortness of breath or new chest pain.
  • Feeling generally rough or tired.
  • Little or no urine.

Source 72

Kidney stones

Same day (urgent GP appointment or NHS 111): severe pain that usually starts in the side of your tummy or your lower back, may spread to the area at the top of your inner thigh (groin), your testicles or the area around the opening of your vagina, and may come and go, or this pain with a high temperature or feeling hot, cold or shivery. It can be a kidney stone.

Source 15

A possible kidney infection

Ask for an urgent GP appointment or get help from NHS 111 if you think you may have a kidney infection (often pain in your lower back or side, with burning or stinging when you pee or needing to pee more often) and you have a very high temperature or feel hot, cold or shivery, a temperature below 36C, pain in the lower tummy or in the back just under the ribs, blood in your pee, you feel or are sick, you haven't had a pee all day, or you're pregnant. Call 999 or go to A&E if you're confused, drowsy or have difficulty speaking.

Source 73

Kidney injury or muscle breakdown

The NHS says to ask for an urgent GP appointment or get help from NHS 111 if you think you may have acute kidney injury: peeing a lot less than usual, feeling very thirsty, feeling or being sick, swollen feet or legs, feeling tired, dizzy, confused or sleepy, or feeling breathless, especially when you lie down.

Muscle pain, swelling or weakness far worse than the session explains, and dark pee (red, brown, tea or cola coloured), sometimes starting hours or days later. Dark pee isn't always there, so muscles far sorer, more swollen or weaker than the session explains still need the same-day check. Get medical help the same day: call NHS 111, or go to A&E if you feel very unwell. Call 999 for sudden, severe pain in a swollen, tight muscle.

Sources 74, 69

After a hot class

Call 999 if someone is still unwell after 30 minutes of resting in a cool place, being cooled and drinking fluids, or has a very high temperature, hot skin that's not sweating, a fast heartbeat, fast breathing or shortness of breath, confusion and lack of coordination, a seizure or fit, or loses consciousness (the NHS's heatstroke signs).

Source 75

Stop exercising

Stop if:

  • You feel very tired, dizzy or light-headed, or get leg cramps.
  • You become short of breath or have chest pain.
  • You get an irregular or racing heartbeat, or feel sick.

Sources 55, 34

Don't start or restart without your team

The UK guideline advises against exercise:

  • In your first 3 months of haemodialysis.
  • With an infection or fever.
  • Within 2 weeks of a heart attack, or with chest pain that hasn't been checked.
  • With an unstable heart condition, or resting blood pressure above 200/110.
  • With symptoms from high or low blood pressure.

Source 3

Polycystic kidney disease

Stop any activity that keeps bringing on blood in your pee or pain in your side, and tell your team.

Source 24

Myths

"Twists and back bends massage or detox your kidneys"Mixed evidence

No study has tested any pose on kidney blood flow or toxin removal, and blood flow to the kidneys falls during exercise. Your liver and kidneys do the detoxing.

Sources 12, 37, 13

"Yoga poses dissolve kidney stones"Strong evidence

No study has tested yoga for stones. Nothing dissolves most stones once formed; only uric acid stones can be dissolved, with medicine. Most small stones pass on their own.

Sources 39, 14, 40

"Headstands help you pass stones"Mixed evidence

The head-down tilt that helped fragments clear was done on a couch in clinic after stone treatment, with tapping and fluids. It isn't yoga or a home headstand. Follow your urology team's advice.

Sources 41, 43

"Jumping shakes a stone loose"Mixed evidence

There's no controlled trial, and the roller coaster study used a model kidney.

Sources 44, 45

"Yoga lowers creatinine and reverses kidney disease"Mixed evidence

In the most-quoted trial, creatinine didn't differ significantly between groups, and the one positive trial is unrepeated and was read only as a summary. The NHS: "There's no cure for CKD, but treatment can help relieve the symptoms and stop it getting worse."

Sources 8, 9, 1

"Exercise strains the kidneys, so rest is safer"Strong evidence

"Do not be scared to exercise. Exercise is good for anyone with kidney disease, however severe" (the NHS).

Sources 1, 2

"Drink as much water as you can to flush your kidneys"Mixed evidence

For stones, 2.5 to 3 litres a day is the NHS's advice. On dialysis, your team sets your allowance and extra fluid stays in your body. And drinking 3.5 litres after a hot class caused a seizure from low blood sodium in one woman.

Sources 15, 53, 58

"Hot yoga sweats out toxins"Mixed evidence

Sweat is mostly water and salt, as our hot yoga guide says. Heat lowers blood flow to the kidneys, and dehydration raises the risk of kidney injury for people on many kidney medicines.

Sources 57, 56, 38

"You can't do yoga with a fistula or on dialysis"Emerging evidence

Seated yoga during dialysis was feasible in two US trials, with the fistula arm kept still, and the UK guideline found no evidence that light arm exercise harms a fistula. Protect the arm from pressure and weight.

Sources 5, 6, 3

"Kapalbhati cleans the kidneys"Mixed evidence

We found no study of kapalbhati and kidney health. It raises blood pressure while you do it, and one man on PD developed a hernia while practising it.

Sources 4, 35, 63

"Yoga can replace your blood pressure tablets"Strong evidence

Yoga lowers blood pressure a little, about 5/4 mmHg, and NICE found too little evidence to recommend relaxation therapies. Never stop a tablet without your team.

Sources 10, 36

Questions people ask

Is yoga good for your kidneys?

Yoga is a gentle way to be active, and being active is good at every stage of kidney disease: "Do not be scared to exercise," says the NHS. Kidney guidelines suggest 150 minutes a week, or as much as you can manage. Yoga's own trials in kidney disease are few, small and mostly unblinded, with small gains in things like tiredness and sleep.

Can yoga improve kidney function or lower creatinine?

It hasn't been shown to. In the most-quoted trial, creatinine and urea didn't differ significantly between groups after 6 months, and one positive trial has been read only as a summary and hasn't been repeated. Exercise can also push urine protein and creatinine up for a while, so avoid a hard session the day before a kidney test.

Which yoga poses are good for the kidneys?

No pose has been shown to help the kidneys themselves. Choose poses that suit your body and treatment: sitting poses, standing poses with a chair, and slow breathing with no breath holds. Claims that twists, back bends or kidney massage poses squeeze or detox your kidneys haven't been tested, and blood flow to the kidneys falls during exercise.

Can yoga help pass or dissolve kidney stones?

No. No study has tested yoga for stones, and nothing dissolves most stones once they've formed. Most small stones pass on their own, and drinking 2.5 to 3 litres of water a day helps stop new ones forming. A head-down tilt with tapping helped fragments clear after stone treatment, but in clinic, not as yoga.

Can I do yoga if I'm on dialysis?

Yes, with your kidney team's agreement. Seated yoga during haemodialysis was feasible in two US trials, with the fistula arm kept still, though it didn't significantly change physical function. Rest for an hour or two after a session, be active on your better days, and keep to your fluid allowance.

Can I do yoga with a fistula?

Yes, if you protect the arm. Avoid pressure, heavy lifting and anything tight on it, and check the buzz every day. Our suggestion is to skip poses that put your body weight through that arm, such as plank, downward dog and side plank, unless your team says they're fine.

Can I do yoga with peritoneal dialysis?

Ask your PD team first: fluid in your tummy raises the pressure inside it, and hernias are a known problem with PD. Units advise differently on tummy work, lifting and whether to drain before exercise. Avoid forceful tummy breathing such as kapalbhati; in one case report, a man on PD developed a groin hernia while practising it.

When can I do yoga after a kidney transplant?

Walk from the start, but avoid anything that strains your tummy for 4 to 6 weeks and lifting over 10 kg for 6 weeks; moderate exercise usually starts from about 6 to 8 weeks, as your transplant team advises. Your new kidney sits in your lower tummy, so ask before poses that press on it or twist deeply. Contact your transplant team for a temperature of 38C or above, new chest pain or little or no urine.

Is hot yoga bad for your kidneys?

It didn't change kidney function in healthy practitioners, but nobody has studied it in kidney disease. Heavy sweating can concentrate your urine and raise stone risk, dehydration matters on many kidney medicines, and on dialysis a sweaty class can tempt you over your fluid allowance. Skip hot yoga unless your kidney team agrees.

Is kapalbhati or pranayama good for the kidneys?

We found no study of any breathing practice on kidney function. Forceful breathing such as kapalbhati raised blood pressure while people did it, and a man on PD developed a hernia while practising it. Slow breathing with no holds is the safer choice, and it may help blood pressure a little.

Can yoga lower my blood pressure with kidney disease?

It may help a little: about 5/4 mmHg across 49 trials in general, with only 2 small trials in kidney disease. Good blood pressure protects your kidneys, and NICE's target is usually below 140/90. Yoga adds to your tablets; don't stop or change them without your team.

Can I do yoga with polycystic kidney disease?

Yes: the international guideline encourages 150 minutes a week of activity plus strength work. With large kidneys it advises avoiding collision sports, and you should stop anything that keeps bringing on blood in your pee or pain in your side. Ask your team before poses that press hard on your tummy or sides.

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Exercise education, not a personal prescription, and clinical review of these guides is pending. If you are pregnant, have a health condition such as glaucoma, high blood pressure or osteoporosis, or have had recent surgery, check with a doctor, midwife or physiotherapist before starting, and stop for sharp or increasing pain. Health disclaimer.