(USA Today) Cutting carbohydrates might also cut lifespan by up to four years, according to a new medical study.

The peer-reviewed research published in the medical journal The Lancet Public Health suggests low and high-carb diets could shorten life, and diets including some carbs could promote a healthy lifespan.

Scott Solomon, senior author on the study, called the research “the most comprehensive study of carbohydrate intake” ever.