
Medic demonstrates the 30-second hand test that could reveal if you have a hidden brain tumour
By JOHN ELY DEPUTY HEALTH EDITOR FOR MAILONLINE Published: 06:06 EDT, 7 May 2025 | Updated: 06:26 EDT, 7 May 2025 A simple 30-second hand test could reveal if something is seriously wrong in your brain, a medic has claimed. British doctor who goes by …