What your hair can tell you about your health

By Dan Baumgardt, Senior Lecturer, School of Physiology, Pharmacology and Neuroscience, University of Bristol

Hair speaks volumes. The way we cut, style and colour often acts as a representation of who we are.

But hair is more than just aesthetic. It also has many important functions – preventing heat loss from the skin for instance, or (in the case of our eyebrows) stopping sweat dripping into the eyes.

Hair can be a reflection of what’s going on inside our body, too. Many diseases can alter the quality and appearance of our hair. Paying attention to the way it looks can give us clues to the state of our health.

The hair cycle

Some of the tiniest organs in…

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