Ben Greenfield

Advocate

MS, Exercise Physiology & Biomechanics, certified sports nutritionist

Biohacking, fitness optimization, nutrition, longevity

About

Ben Greenfield is a fitness and biohacking personality with a wide-ranging podcast and book (Boundless). He covers everything from supplements to cold exposure to light therapy and tends toward an enthusiastic, experimental approach.

Our approach to his mentions

Greenfield covers an extremely broad range of products. His enthusiasm sometimes runs ahead of the evidence. We note his mentions but weight our grades toward the clinical data, not the endorsement.

When the evidence changes, we’ll tell you.

One short email a month. New A-grades, downgraded claims, and reader questions.

Medical disclaimer. The information on this site is provided for educational purposes only and is not intended as medical advice. It does not constitute a diagnosis, treatment plan, or recommendation for any specific health condition. Always consult a qualified healthcare professional before making changes to your supplement regimen, diet, or lifestyle — especially if you are pregnant, nursing, taking medications, or managing a medical condition.

Affiliate disclosure. Some links on this site are affiliate links. If you purchase through them, we may earn a small commission at no extra cost to you. This never influences our editorial assessments — products are graded solely on the evidence.