In determining health risk, the study created low carbohydrate scores for the women and men, based on a multi-year evaluation of their diet intake with a focus on the proportion of carbohydrates, and fat and protein “ whether derived largely from animal or vegetable-based sources.

During follow ups with the men and women, the study found that those who had a diet made up of more animal-based sources and a low-carbohydrate intake , scored higher for association with "all-cause" mortality and cancer mortality., Those who had a diet made up of more plant-based sources and a low-carbohydrate intake, scored  lower for association with "all-cause" mortality, and cancer and cardiovascular mortality.

Participants with a higher animal low carbohydrate score were heavier and were more likely to be smokers, whereas those with a higher vegetable low carbohydrate score consumed more alcohol and whole grains. Variations in lifestyle and other dietary issues, such as smoking status, family history of colorectal cancer, aspirin use, and history of hypertension were controlled in the analyses.

SOURCE Simmons College