Lymphoedema after breast cancer: a small add-onEmerging evidence
In a Cochrane review of 6 small trials, adding manual lymphatic drainage to compression bandaging reduced arm volume by an extra 7% (2 trials, 83 women), on top of 30% to 39% from bandaging alone. Women with mild to moderate swelling responded better. For pain and heaviness, 60% to 80% felt better whichever treatment they had, and drainage was safe in every trial.
Source 3
Bigger trials: little or no extra benefitMixed evidence
In 103 women, daily drainage and bandaging, then a garment, reduced the extra arm volume by 29% against 23% with a garment alone, a difference that could be chance; the arm lost more fluid in total (250 against 143 millilitres), but quality of life and arm function didn't differ. In 194 people on full decongestive therapy, real drainage did no better than a pretend massage: swelling fell by about the same in every group.
Sources 21, 4
Pooled trials: unclearEmerging evidence
Pooled trials found no clear effect on swelling, a possible easing of pain, and an unclear effect on quality of life, with no serious side effects.
Sources 22, 23, 24
What the guidelines sayStrong evidence
NICE made no recommendation on manual lymphatic drainage because the evidence was uncertain, and recommends compression first. The International Society of Lymphology's consensus says drainage adds limited value to compression and exercise for swelling, can ease pain and tightness, and has unknown value outside breast cancer.
Sources 5, 6
Preventing lymphoedema after breast surgery: unsettledMixed evidence
In 120 women, an early physiotherapy programme that included lymphatic drainage, scar massage and shoulder exercise cut lymphoedema at a year from 25% to 7%, but drainage's own share is unknown. In 160 people who were already doing exercise and following advice, adding drainage made no difference (24% against 19%). Pooled analyses disagree, and the international consensus reports agreement among its experts that drainage helps prevent it after breast cancer. Ask your breast care team.
Sources 25, 26, 22, 23, 6
Moving and breathingEmerging evidence
In 38 women with arm lymphoedema, 10 minutes of gentle arm exercise with deep breathing reduced arm volume by about 6% straight away, and by 9% after a month of doing it twice a day, with no comparison group. The international consensus says muscle-pumping exercise in daily life is useful for anyone with lymphoedema, and Cancer Research UK says deep breathing helps lymph flow by changing the pressure in your tummy and chest.
Sources 27, 6, 28
Drainage does move lymph, brieflyEmerging evidence
In a pilot study of 22 people, one session sped lymph through the vessels by about a quarter straight afterwards. That shows it moves lymph for a while, not that it changes swelling over weeks.
Source 29
After knee replacement: not worth it routinelyStrong evidence
Three reviews, of up to 8 trials and 463 people, found no difference in swelling, pain or knee bend, though two trials saw short-lived comfort in the first days. One review concluded it isn't recommended for rehabilitation after knee replacement.
Sources 30, 31, 32
After cosmetic or wisdom tooth surgery: small, low-quality studiesEmerging evidence
A 2026 review found less swelling after liposuction and tummy tucks when drainage started 2 to 5 days after surgery and ran for 6 to 12 sessions, but pain results were inconsistent and the studies were low quality. After wisdom tooth removal in 46 people, the side treated with drainage had less swelling, pain and jaw stiffness. Trials after liposuction compared drainage methods with each other, not with doing nothing.
Sources 33, 34, 35, 36
Other uses: few, small studiesMixed evidence
Small studies report benefits after sports and other injuries, in fibromyalgia, in migraine and in long COVID fatigue, but most had no fake-treatment comparison, and a fibromyalgia review called the evidence insufficient.
Sources 37, 38, 39, 40
Lipoedema: it eases discomfort, not the fatEmerging evidence
NICE says conservative treatment, including lymphatic drainage, doesn't remove the abnormal fat of lipoedema. In 33 women with severe lipoedema, decongestive therapy (drainage plus compression) 5 times a week for 6 weeks, added to exercise, reduced leg volume and pain more than exercise alone.
Sources 11, 41
Constipation: tummy massage, not lymph drainageEmerging evidence
Across 23 studies, abdominal massage added about one and a half bowel movements a week in people with constipation, though laxative use didn't fall. That's the likely source of the claim that lymphatic drainage makes you poop: massaging the tummy moves the gut.
Sources 42, 43