A few decades ago, only the most serious bodybuilders would supplement their diets with protein powder; today, thanks to some clever marketing, it can seem like an essential addition to any diet.
But how are they made? And what good do they actually do us? In the video above, doctor and BBC presenter Chris Van Tulleken looks for facts behind the hype, and finds that for most people, a protein boost might just do your body – and figure – more harm than good.
This is an original short video co-commissioned with Britlab. For more great Britlab stories, visit their YouTube channel.
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