Dr. James Whitfield is a board-certified internal medicine physician who reviews VidaBeacon content for clinical accuracy.
James Whitfield, MD
Internal Medicine Physician
Credential verified Baltimore, MD
Medical Review BoardAreas of focus
Internal medicine
Education
- MD — Johns Hopkins University School of Medicine
Medically reviewed by James
Nutrition
How Much Water Should You Actually Drink Per Day?
Hydration needs vary by body size, activity, and climate. Learn how to gauge whether you're drinking enough.
June 22, 2026 1 min Reviewed
Fitness
10 Science-Backed Benefits of Regular Exercise
Regular physical activity improves cardiovascular health, mood, sleep, and longevity. Here's the evidence.
June 15, 2026 1 min Reviewed
Sleep
Why Sleep Matters: The Science of a Good Night's Rest
Quality sleep supports memory, mood, metabolism, and immune function. Learn how to improve yours.
June 12, 2026 1 min Reviewed