The occurence of varicose veins is a desease that is genetically inherited.
Clinical tests of 10-12 year old children have shown, that 2.5% already suffer from a reflux, which means, that the leaflet valves within their veins, which transport the blood back to the heart, do not properly shut.
Amongst the 29-30 year old probands 20% suffer from a reflux, but with visible mutations delayed. However, not all persons with a diagnosed reflux develop varicose veins.
Additional factors that support the creation of varicose veins are age, sex (women are affected more often), pregnancy, obesity and lack of exercise.
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