In 30 adults with thinning hair, a laser followed by a growth factor serum raised hair density far more than the laser alone. The makers supplied the products.
Read the articleHow studies in people, called clinical trials, are planned, counted and written up. Also what makes a result well proven, and what makes one still early.
Newest here
Trials explained
Most aches blamed on a cholesterol pill also came with fake pills, trial finds
5 min read 7 October 2026
Trials explained
An extra shot helped 9 in 10 cancer patients bank stem cells for a transplant
5 min read 9 September 2026
Trials explained
A COVID drug helped patients recover 5 days sooner but barely cut deaths
4 min read 9 September 2026
Trials explained
Collagen style pills only slightly reduced wrinkles in 19 trials, review finds
4 min read 8 September 2026
More in Trials explained
Trials explained
A stronger weight loss shot added little extra loss but more stomach upset
In a 76 week trial, adults lost about an eighth of their weight on either a smaller or a bigger weekly shot.
5 min read 8 September 2026
Trials explained
A three hormone shot cut a quarter of body weight in 48 weeks, trial finds
In the only trial of this three hormone medicine printed in a journal, adults on the top amount lost about a quarter of their body weight in 48 weeks.
5 min read 7 September 2026
More from MetaResearch
Articles from the other sections.
Longevity
People who ate healthier showed slightly slower DNA aging in blood, study finds
In about 7,500 German adults, eating closer to healthy diet plans went with slightly slower aging on blood DNA tests.
4 min read 2 November 2026
Longevity
An enzyme the brain makes helped old mice keep their memory, study finds
Old mice with more of one brain enzyme kept their memory better, and mice without it aged faster.
4 min read 27 October 2026
Advanced Biologics
A cream made from a small protein eased skin pain after radiation, trial finds
In a trial of 30 women having radiation after breast cancer surgery, a protein-based cream eased pain more than a regular cream.
4 min read 27 October 2026
Advanced Biologics
A vaccine made from each patient's tumour cut melanoma's return, trial finds
In 1,137 people whose melanoma was removed, a vaccine built from their own tumour cut the cancer's return by 42 percent.
4 min read 27 October 2026
Metabolic
Cardio plus resistance bands kept blood sugar lower all day, small trial finds
In 23 older adults with type 2 diabetes, only cardio plus resistance bands went with lower blood sugar over the next day.
4 min read 27 October 2026
Longevity
Extra cash for families slowed a DNA aging score in their kids, trial finds
In a trial of 1,000 US mothers with low incomes, kids in families given more cash each month scored as aging a little slower.
4 min read 27 October 2026
Metabolic
Weight lost in the 50s went with healthier heart checks at 62, study finds
In 6,309 Britons born in 1958, people who lost weight in their 50s had heart checks at 62 like people of healthy weight.
4 min read 27 October 2026
Metabolic
Do weight loss shots weaken bones? Only 8 small trials checked, review finds
A review found just 8 trials, with 493 people, that checked bone strength on weight loss shots.
4 min read 27 October 2026
Advanced Biologics
Two shots cut a blood fat tied to heart disease by nine tenths, trial finds
In a trial of 320 adults, two shots six months apart cut an inherited blood fat by more than nine tenths compared with a fake shot.
5 min read 7 October 2026
Longevity
A daily capsule shaved about 3 months off body age blood tests, trial finds
In older Swiss adults, one daily capsule moved three DNA based age tests by about three to four months over three years.
5 min read 7 October 2026
Advanced Biologics
A daily shot made everyday tasks a bit easier in a muscle disease, trial finds
In a 12 week trial of 174 adults, a daily shot cut a score of everyday trouble about two points more than a fake shot did.
5 min read 9 September 2026
Advanced Biologics
A targeted drug added about 5 months of life in one breast cancer, trial finds
In a trial of 468 adults with a hard to treat breast cancer, people on a drug sent straight to the tumour lived about five months longer.
5 min read 9 September 2026
Advanced Biologics
None of 2,134 young women given an HIV prevention shot caught HIV, trial finds
In a trial in South Africa and Uganda, nobody given a shot every six months caught HIV, and a second trial found two cases.
5 min read 9 September 2026
Advanced Biologics
A daily pill cut bad cholesterol by more than half in 24 weeks, trial finds
In a trial of 2,909 adults, a pill taken once a day lowered bad cholesterol by more than half.
5 min read 8 September 2026
Advanced Biologics
A copper compound sold for skin has only two trials in people, review finds
A review found 20 studies of a copper compound used on skin, and 18 of them were done in cells or animals.
5 min read 8 September 2026
Metabolic
A daily weight loss pill helped adults lose about a tenth of their weight
In two large trials, a once a day pill led to more weight loss than a fake pill.
5 min read 8 September 2026
Longevity
Blood tests of body age ticked slower on a weight loss drug, small study finds
Frozen blood from a 32 week trial in 84 adults scored lower on several aging tests in the drug group.
4 min read 7 September 2026
Metabolic
Fewer people on newer diabetes drugs got thyroid eye disease, study finds
In the health records of 347,236 people with thyroid disease, the eye disease turned up about 18 percent less often in year one on a newer diabetes drug.
5 min read 7 September 2026
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The MetaResearch email
A short email when a study worth reading comes out. It says what the study found, what it does not show, and where to read the source.