When people think about lung cancer, they often imagine symptoms like a persistent cough or shortness of breath. But there’s one early warning sign that’s far less obvious — and you can check for it yourself with a simple “finger test” at home.
According to The Mirror, lung cancer spreads faster than many other types of cancer, with nearly 40,000 new cases diagnosed each year in the UK. Unfortunately, symptoms often don’t appear until the disease has already advanced. That’s why spotting the early signs can make a life-saving difference.
How to Do the Finger Test
Here’s how you can perform the quick self-check:
- Press the nails of your two index fingers together.
- Look closely where they meet.
- If you can see a tiny diamond-shaped gap of light between the nails, that’s normal.
- If there’s no gap and your fingertips look swollen or rounded, it could be a sign of finger clubbing — a condition sometimes linked to lung cancer.
Finger clubbing happens in stages:
- The base of the nail becomes soft.
- The skin near the nail bed appears shiny.
- The nails start curving more than usual.
- Finally, the fingertips may swell due to fluid buildup in the soft tissue.
While finger clubbing doesn’t always mean you have lung cancer, it’s worth getting checked. It can also be linked to other health conditions such as heart or lung disease. If you notice changes in your fingers, see your GP as soon as possible.
