Protein is essential for strength, muscle, and healthy aging—but when intake goes too far or relies on the wrong sources, it can quietly create health problems, especially over time.

New dietary guidelines issued by Health and Human Services Secretary Robert F. Kennedy, Jr., and federal officials have placed a renewed emphasis on protein in Americans’ diet, both animal and plant.

While many are aware of the benefits of having a protein-rich diet in today’s day, consuming excessive amounts of protein can also cause significant side effects. Based on the observations of ...

Protein gets a lot of hype for good reason: The macronutrient can support muscle gains, help with weight management, and more. But, some say you can have too much of a good thing, and that going ...

For some people, taking protein powder may lead to digestive symptoms such as indigestion, nausea, or stomach pain. 13 Responses can vary depending on the type of protein, individual digestive ...

Consumer Reports tested 23 popular protein powders and shakes. The results? Over two-thirds contained more lead in a single serving than what CR’s experts consider safe for an entire day. In some ...