Research Summaries

One study doesn’t settle anything. Here’s what the actual studies say, plainly — including what they don’t tell us, because that part matters just as much as the finding.

Line chart showing a larger cognitive-performance gap between creatine and placebo groups under sleep deprivation than under normal rest
ResearchSupplements & Nootropics

What a Creatine and Cognition Review Actually Found

A systematic review of RCTs found creatine supplementation gave modest cognitive benefits, most consistently under cognitive stress like sleep deprivation, or in people with lower baseline creatine stores, such as vegetarians.

Meta-analysis
Scatter chart showing gut microbial diversity increasing with the number of distinct plant foods eaten per week
ResearchGut Health

What the American Gut Project Actually Found About Plant Diversity

People who reported eating more than 30 different plant species per week had significantly more diverse gut microbiomes than people eating 10 or fewer — regardless of whether they identified as vegan, vegetarian, or omnivore.

Observational
Bar chart comparing similar weight-loss outcomes between a time-restricted eating group and a standard-meal-pattern group
ResearchMeal Timing

What the TREAT Trial Actually Found About Time-Restricted Eating

Over 12 weeks, 16:8 time-restricted eating produced no statistically significant weight-loss advantage over a standard three-meals-a-day pattern, once the modest calorie reduction that occurred naturally in the time-restricted group was accounted for.

Single RCT
Line chart showing muscle-gain benefit rising then flattening as daily protein intake increases
ResearchProtein

What the Biggest Protein Meta-Analysis Actually Found

Pooling 49 studies and modelling the actual dose-response curve, this meta-regression found the muscle-building benefit of additional dietary protein plateaued at around 1.6g per kilogram of bodyweight per day — more protein above that point bought very little extra muscle gain in the pooled data.

Meta-analysis