Higher body fat in women may protect against death due to heart disease: Study

Among men, on the other hand, while having high muscle mass and high body fat decreased their risk by 26% (compared to those with low muscle mass and low body fat), having high muscle mass and low body fat decreased their risk by 60%.

The researchers analyzed body composition data from the National Health and Nutrition Examination Survey 1999-2004 and cardiovascular disease data from the National Health and Nutrition Examination Survey 1999-2014. They evaluated 11,463 individuals aged 20 and older, who were then divided into four body-composition groups: low muscle mass and low body fat, low muscle and high fat, high muscle and low fat, and high muscle and high fat. Heart disease-related mortality rates where then calculated for each of these groups.

The findings highlight the importance of recognizing physiological differences between women and men when considering body composition and the risk of death from heart disease, particularly when it comes to how differences in body fat may modify that risk.

The research also underscores the need to develop sex appropriate guidelines with respect to exercise and nutrition as preventive strategies against the development of cardiovascular disease. Even with the current emphasis by health experts on reducing fat to lower disease risk, it may be important for women to focus more on building muscle mass than losing weight, the study authors say.

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