Dr. Arjun Mehra
Infectious Disease, Vaccines & Global Health
Global health writer tracking the science that protects populations from the diseases that threaten them most.
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Articles by Dr. Arjun Mehra

A Spice May Quietly Halt Brain Disease and Cancer
Imagine a simple compound, perhaps as common as a kitchen spice, capable of defending against devastating illnesses like Alzheimer's and cancer. Discover how scientists are turning this vision into reality, offering hope for healthier, longer lives.

Why Your Daily Energy Is Making You Age Faster
Think you understand your body's energy? Too much or too little, it's quietly pushing you to age faster and get sick. Learn how science is spotting these hidden struggles early.

Your Brain's Own Cells Can Make Stroke Worse
Imagine your body's repair crew accidentally making things worse after a serious injury. New research reveals a surprising mechanism within your brain's own immune cells that can hinder recovery after a stroke, opening doors for entirely new treatments.

How Smoking Ages Your Blood
Think you know the risks of smoking or vaping? What's happening inside your body might be far more insidious, affecting the very cells that keep you alive. Discover how daily habits silently accelerate aging in your blood and what that means for your future health.

Your Vaping Habit Could Reshape Your Blood.
You might think you know what smoking or vaping does to your body, but new discoveries reveal a hidden battlefield deep within your blood. Learn how your daily habits are silently changing your fundamental biology and what that means for your future health.

Why Your Next Shot Could Work So Much Better
Imagine a world where vaccines and gene therapies are incredibly precise, delivering exactly what your body needs. New research is making this future more real than you think, promising fewer side effects and stronger treatments.