Varicose veins: are they harmful?

By Markos Klonizakis, Reader (Clinical Physiology), Sheffield Hallam University

Around 25% of women and 15% of men have varicose veins. These are swollen and twisted superficial veins – which often appear on the legs – that typically only bother people because of their appearance. But many people may not be aware that in some cases varicose veins can actually be a sign of greater health problems – as they may lead to venous leg ulcers and deep vein thrombosis, which affect our blood circulation and skin health.

Varicosities appear when vein…

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