Why do women outlive men

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<p>Baby girls born today in the UK can expect to live to 82 years old, whereas boys on average will die 4 years earlier.</p><p>Evolutionary biologist Dr Yan Wong looks at the latest evidence suggesting that where ageing is concerned, men seem to be at a genetic disadvantage. From research on ancient Korean eunuchs to laboratory fruit flies, new studies seek the answer to why males across the animal kingdom live faster and die younger.</p><p>So, is the gender gap here to stay?</p>