Grandma said…

Sugar makes the children go completely wild!

All grown-ups · the 1990s
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The verdict

In double-blind studies, where neither children nor parents know who has had sugar, sugar has not been shown to make children hyperactive. Parents who believe their child has had sugar do rate it as more unruly, though. The party made them wild, not the sugar.

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