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How much protein you should eat in a day — and what happens when you have too much

man drinking protein shake

Protein is critical for building and maintaining muscle and keeping you feeling full after eating. So it's no surprise that protein powder is one of the best-selling supplements in the US.

In reality, most Americans already get plenty of protein from their diets — beans, eggs, fish, nuts, meat, and tofu are all rich in the stuff. Most of us actually get too much of it.

To figure out how much protein you need daily, Business Insider talked to Lisa Sasson, an associate professor of nutrition at New York University. Sasson said there's a simple equation you can use to find out roughly how much you should be eating every day.

All you have to do is convert your weight into...

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