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A 12-week trial found dead Akkermansia bacteria improved insulin resistance, cholesterol and hormones in 100 women. Here is exactly what researchers found.

A JAMA trial found 20 mg of zinc a day cut infections 38% in young kids with sickle cell anemia — after 10 mg flopped. Here is what the study really showed.

New trial: cranberry eased overactive-bladder symptoms in young women — yet lowered the 'good' bacteria everyone assumes should rise. The details matter.

A new 12-week trial gave 38 women 3 mg of melatonin with their workouts, and the combo beat training alone on LDL cholesterol. Here is the full story.

Urolithin A failed its heart-health endpoint in a new trial — but the brain scans told a different story. Here's what 1,000 mg daily really did for people.

Creatine monohydrate, the gym-bro staple, may help middle-aged adults lose body fat and build lean mass — even without exercising, a new 12-week trial found.

A year-long trial tested NAD+ booster nicotinamide riboside in 410 people with early Parkinson disease — and placebo won. What supplement buyers should know.

48 cadets did Tabata, took cinnamon, or both for 6 weeks. The combo group got the biggest fat-burning hormone boost — even the non-trainers lost fat.

A new 35-trial analysis says omega-3s only raise AFib risk above 1,500 mg/day in high-risk people. Here is the dose line that matters for your fish oil habit.

In a new trial, 109 people took 1,000 mg of vitamin C daily for a year. The main goal wasn't met — but an unexpected signal caught scientists' attention.