Tagged “Medicine”

6 articles

What Would Happen to a Human in Space Without a Spacesuit?

Outer space is an extremely hostile environment for the human body. The absence of breathable air, near-zero atmospheric pressure, extreme temperatures, and hazardous radiation make it impossible for humans to survive for long without a protective suit.

3 min read2

Sleep

What deep sleep does to your memory

Your brain does not rest while you sleep. It replays, filters and moves the day's learning into long-term storage while clearing metabolic waste.

3 min read8

Immunity

How the immune system recognises a virus

Two lines of defence: one reacts instantly to anything foreign, the other is slower but learns and remembers. Vaccines work through the second.

3 min read0

Nutrition

The gut microbiome: tens of trillions of residents and what they do

Gut bacteria digest fibre, make vitamins and talk to the immune system and brain. But the gap between correlation and causation here is still wide.

5 min read2

Physiology and Metabolism

How exercise reshapes the heart and blood vessels

It is not just about calories. Regular training thickens ventricular walls, raises stroke volume, improves endothelial function and lowers resting blood pressure.

2 min read3

Genetics

CRISPR: molecular scissors borrowed from bacteria

A bacterial immune mechanism turned into a precise, cheap and fast gene-editing tool - now an approved therapy.

2 min read1