Just because something has lots of protein doesn't make it healthy.

"Most Americans get more than enough protein from their diet," public-health experts at the University of California, Berkeley wrote recently in Berkeley Wellness. (Adults over 65 are a notable exception to that rule, though.)

A long-term study of over 131,300 people in the US found that the more animal protein people ate, the more likely they were to die of a heart attack, suggesting that it may be best to favor plant proteins like those from nuts and beans, rather than relying on meat.