Medical reviewer

Dr. James Whitfield, MD, MPH

MD, MPH, Preventive Medicine

License jurisdiction

New York, USA

Review scope

Longevity and lifestyle epidemiology, observational-study interpretation, heat/cold exposure literature, and population-health claims.

Dr. Whitfield practices preventive medicine and holds a master of public health in epidemiology. His review specialty is keeping observational findings honest — separating association from causation before content reaches readers.

Medical review means this reviewer checked claims against primary sources, verified that risks and contraindications precede promotional content, and confirmed regulatory status is stated accurately. It does not create a clinician–patient relationship with any reader.

Guides reviewed

LongevityEvidence: Observational

Heat Exposure and Longevity: Reading the Sauna Literature

The Finnish cohort data is compelling but observational. We walk through what it can and cannot support, dose-response included.

Medically reviewed · 2025-06-05

Review standards are public in our editorial policy. Errors can be reported via the corrections process.