A big study on women found that eating more or less fat doesn’t seem to make you more or less likely to get heart disease or breast cancer.

A big study on women’s health found that eating more or less fat didn’t seem to change their risk of getting heart disease or breast cancer, and other similar studies saw the same thing.

For people who haven't had a heart attack yet, how much fat they eat doesn't seem to affect their chance of dying from heart disease, according to combined data from several long-term studies.

In the past, people noticed that countries where people ate more fat also had more breast cancer and heart disease, but later studies on individuals didn’t prove that eating more fat actually causes those diseases.

Some studies have found that eating more fat might be linked to colorectal cancer, but others didn’t find any connection—and one big study of women found no link at all.

Multiple large-scale meta-analyses of prospective cohort studies demonstrate no statistically significant association between dietary saturated fat intake and incidence of coronary heart disease or cardiovascular disease.