To determine heart disease risk, researchers from several universities in the United States and Norway measured the kidney function of more than 5,000 older adults ages 45 to 84. They tracked eating patterns and tested albumin-to-creatinine ratio (ACR) - a measure that when too low, can indicate poor kidney function and an extremely high risk for cardiovascular disease, according to the American Heart Association.
Researchers found that people who reported consuming more low-fat milk and milk products had lower ACR, or healthier kidney function. In fact, low-fat milk and milk products was the only food group evaluated that on its own, was significantly linked to a reduced risk for kidney dysfunction. The study authors cited other research suggesting milk protein, vitamin D, magnesium and calcium may contribute to milk's potential heart health benefits.
An overall healthy diet, including low-fat milk and milk products, whole grains, fruits and vegetables was also associated with a benefit - 20 percent lower ACR or healthier kidney function.
The National Kidney Foundation estimates that kidney disease affects about 26 million Americans - and kidney disease is both a cause and a consequence of cardiovascular disease, the number one killer of Americans. An estimated one out of three adults is currently living with some form of cardiovascular disease.
Milk provides nine essential nutrients, including calcium, vitamin A, vitamin D, protein and potassium. The U.S. Dietary Guidelines for Americans recommend drinking three glasses of low-fat or fat free milk each day.