Science Focus - the home of BBC Science Focus Magazine
Why do my fingernails grow faster in a hot country? © Alamy

Why do my fingernails grow faster in a hot country?

Subscribe to BBC Science Focus Magazine and get 6 issues for just £9.99

Time to nibble on our 10 keratin-based beauties.

Asked by: Simon Makin, Scotland

Advertisement

In 1941, American doctor William Bennett Bean began a 35-year study of his own fingernail growth, concluding that climate, season and geographical location have no effect on growth rate.

However, other studies have found a slight increase in growth during the summer – probably due to increased blood supply to the fingertips. But if you notice a sudden change while on holiday, it’s more likely that your nails just aren’t being worn away so fast while you’re relaxing by the pool, and the actual growth rate hasn’t increased very much.

Are white spots on your fingernails really sign of calcium deficiency? © Getty Images

Advertisement

Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun facts.

Authors

luis villazon
Luis VillazonQ&A expert

Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.

Advertisement
Advertisement
Advertisement

Sponsored content