Soy Protein

Soy protein powder is a complete protein. It also contains a lot of BCAAs, which help with muscular strength and growth. Depending on the brand, a quarter-cup (28-gram) serving of soy protein isolate powder has around 95 calories and 22 grams of protein. It also includes beneficial plant compounds, some of which may help decrease cholesterol.

Soy protein has lost favor in recent years because most soy grown in the United States is genetically modified (GM). However, there are a few non-GM soy protein powder products available. Other reasons for the lack of popularity of soy protein include soy allergies and concerns about potential negative health effects, such as breast cancer risk. However, according to a new study, soy protein isolate includes plant components that have anticancer properties, including against breast cancer. Some previous concerns about soy safety were based on animal study results that did not exactly apply to people, according to this review.