When it comes to health, sometimes the smallest details can carry the greatest importance. One such detail is hidden right at the tips of your fingers. Doctors recommend a quick and easy fingernail test that could provide an early clue to lung cancer and potentially save your life.

How to Do the Test
The test takes only a few seconds:
- Place the tips of your index fingers together so that the nails are touching.
- Look closely at the point where the nails meet. Normally, there should be a small diamond-shaped gap of light between the nails.
If this “diamond gap” is missing, it may be a sign of finger clubbing — a condition where the fingertips swell, causing the nails to curve around them.
