Evidence Base

The studies behind every answer.

Original papers. Full analysis. Every finding linked to its DOI so you can check our work.

The Bag of Flour That Ended the Low-Fat Debate A Cochrane review pooled 37 trials and 57,079 adults to answer the question every gym bro has argued about. The answer weighed less than a bag of flour. L et al. · 2020 · Cochrane Database of Systematic Reviews · n=57,079
Your Cooking Oil Is a Body Composition Variable Same surplus, same weight on the scale. But MRI scans revealed one cooking oil was building muscle while the other was storing fat — and nobody's scale caught the difference. Rosqvist et al. · 2014 · Diabetes · n=37
Everything the Internet Knows About Fat and Testosterone Comes From 206 Men A meta-analysis found the testosterone drop was real — then a bigger study found it wasn't. The research behind the internet's most viral testosterone claim is thinner than anyone sharing it realizes. Whittaker et al. · 2021 · Journal of Steroid Biochemistry and Molecular Biology · n=206