Study: Plant-based protein intake linked to increased healthspan

A study led by researchers at the USDA Human Nutrition Research Center on Aging (HNRCA) shows that women who eat more protein, especially plant-based protein, are less likely to develop chronic disease and overall have lower rates of chronic disease as they age. It’s also healthier. The study was published Jan. 17 in the American Journal of Clinical Nutrition.


By analyzing self-reported data from more than 48,762 women, the researchers found that women who consumed more protein from sources such as fruits, vegetables, breads, beans, legumes and pasta in their diets had less protein than those who ate less. The odds of developing heart disease, cancer, and diabetes are significantly reduced, as are the odds of cognitive and mental health decline.

“Protein intake in midlife is associated with improved health in older age. We also found that the source of protein matters. Getting most of your protein from plant sources in midlife, plus a small amount of animal protein, appears to be beneficial to good health and survival in later life. "

—Andres Ardisson Korat, HNRCA scientist and lead author of the study

The findings stem from Harvard's groundbreaking Nurses' Health Study, which tracked female health care professionals from 1984 to 2016. The women were between 38 and 59 years old in 1984 and were considered to be physically and mentally healthy at the start of the study.

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