Boosting protein intake may seem like sensible health advice, but while it is a key nutrient, according to the science we may not need as much as is often thought.

Protein-fortified foods are a common sight nowadays. You can even find water with added protein. Many fitness influencers also promote diets with more than double the typical recommendations.

But how much protein humans need has been a puzzle for centuries. So, what does the science actually say?

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