Zone 2 Cardio: The Science Behind the Training Method Everyone Is Talking About

⚗ Medically Written & ReviewedWritten and reviewed by Dr. Ajit Kumar, MD (Medicine) | MA (Psychology), Founder of Medimadad. Last reviewed: May 2026. This article is for informational purposes only and does not constitute medical advice. Read our Editorial Policy. Key Takeaways Zone 2 cardio — low-to-moderate intensity aerobic exercise — is the most evidence-backed […]

Do Sleep Trackers Actually Work? An Honest Review of the Science

⚗ Medically Written & ReviewedWritten and reviewed by Dr. Ajit Kumar, MD (Medicine) | MA (Psychology), Founder of Medimadad. Last reviewed: May 2026. This article is for informational purposes only and does not constitute medical advice. Read our Editorial Policy. Key Takeaways Consumer sleep trackers are reasonably accurate at detecting total sleep time (within 30-45 […]

Berberine vs Metformin: Can a Plant Compound Match a Prescription Drug?

Medically Written & Reviewed By Dr. Ajit Kumar, MD (Medicine) — Founder, Medimadad. About the Author | Editorial Policy Berberine has been called “nature’s Ozempic” in viral social media posts, “nature’s metformin” in research papers, and “the supplement that works like a drug” in the longevity community. Unlike most supplement claims, berberine has unusually strong […]

The New Alzheimer’s Blood Test: What It Is and Can You Get It in India?

Medically Written & Reviewed By Dr. Ajit Kumar, MD (Medicine) — Founder, Medimadad. About the Author | Editorial Policy How the Alzheimer’s Blood Test Works The Alzheimer’s blood test measures levels of a protein called phosphorylated tau 217 (p-tau217). In Alzheimer’s disease, abnormal tau proteins accumulate in the brain, disrupting neural communication and eventually causing […]

The Hidden Dangers of Ultra-Processed Foods for the Indian Brain

⚗ Medically Written & ReviewedWritten and reviewed by Dr. Ajit Kumar, MD (Medicine) | MA (Psychology), Founder of Medimadad. Last reviewed: April 2026. This article is for informational purposes only and does not constitute medical advice. Read our Editorial Policy. Medical Review: This article was reviewed by Dr. Ajit Kumar, MD (Medicine) — Healthcare Consultant […]

Walking vs Running for Longevity: Which One Actually Extends Your Life?

Medically Written & Reviewed By Dr. Ajit Kumar, MD (Medicine) — Founder, Medimadad. About the Author | Editorial Policy The Key Studies: What Science Actually Shows The National Runners and Walkers Health Study The most comprehensive direct comparison of walking and running for cardiovascular health is Paul Williams’ National Runners and Walkers Health Study, which […]

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