Grandma said…

Don’t look straight at the sun, you’ll go blind!

Dad · the 1990s
It was true

The verdict

True. Staring at the sun, for example during an eclipse, can cause permanent damage to the retina. Use proper eclipse glasses.

On the wall

More warnings

All warnings →

Don’t keep your mobile in your pocket, the radiation will give you a brain tumour!

The neighbour · the 2000s
Blown over

Verdict: A large review commissioned by the WHO in 2024 found no link between mobile phones and brain tumours, even though almost everyone has had a mobile for decades.

Don’t swim straight after eating, you’ll get cramp and drown!

Mum · the 1980s
Blown over

Verdict: No research has shown that people drown from swimming on a full stomach. A gentle swim after lunch is perfectly fine.

Don’t swallow the apple pips, a tree will grow in your tummy!

Grandma · the 1970s
Blown over

Verdict: The stomach is far too dark and acidic for anything to sprout. The pips come out again, usually quite unbothered.

Don’t drink coffee, it’ll stunt your growth!

Grandpa · the 1960s
Blown over

Verdict: There is no evidence that coffee stunts growth. Children still shouldn’t have much caffeine – but for other reasons.