Your fingertips may hold the key to an early sign of the onset of lung cancer. Some 40,000 people are diagnosed with the disease every year, with common symptoms including shortness of breath, wheezing and having a persistent cough with blood or phlegm.
However, The Mirror reports that a simple test may help to reveal the disease early on. When you press your fingernails together you should be able to see a tiny diamond-shaped window of light.
If you can't see the gap, you could have finger clubbing, which is when the ends of your fingers swell up - and this could be a sign of lung cancer. The condition happens in stages, starting at the base of the nail, which becomes soft.
