Certain Plant-Based Proteins May Be Viable Alternative to Dairy-Based Protein

Dairy foods are a rich source of whey protein, which is commonly consumed to help improve athletic performance and address nutritional deficiencies. Now a new study suggests that proteins found in potatoes and rice may be as effective as whey protein for managing appetite and supporting blood glucose levels.

Nine men with an average age of 30 participated in the study. They consumed shakes containing whey, potato, or rice protein on three separate occasions, separated by a one-week washout period. Researchers measured blood insulin levels and gut hormones at baseline, 30-, 60-, 120-, and 180-minutes following consumption of the shake. Appetite was monitored for 3 hours following consumption.

Blood insulin levels rose more following consumption of the whey protein shake, compared to the potato and rice shakes. The smallest increase in blood insulin levels was seen after consuming the potato shake. No differences were seen in appetite perception.

The study was conducted by researchers from the University of Westminster. It was published online ahead of print on June 23, 2021, in the journal Nutrients.