Abstract
OBJECTIVES: To summarize the overall impact of the Nurses' Health Study (NHS) over the past 40 years on the health of populations through its contributions on prevention, translation, and control. METHODS: We performed a narrative review of the findings of the NHS, NHS II, and NHS3 between 1976 and 2016. RESULTS: The NHS has generated significant findings about the associations between (1) smoking and type 2 diabetes, cardiovascular diseases, colorectal and pancreatic cancer, psoriasis, multiple sclerosis, and eye diseases; (2) physical activity and cardiovascular diseases, breast cancer, psoriasis, and neurodegeneration; (3) obesity and cardiovascular diseases, numerous cancer sites, psoriasis, multiple sclerosis, kidney stones, and eye diseases; (4) oral contraceptives and cardiovascular disease, melanoma, and breast, colorectal, and ovarian cancer; (5) hormone therapy and cardiovascular diseases, breast and endometrial cancer, and neurodegeneration; (6) endogenous hormones and breast cancer; (7) dietary factors and type 2 diabetes, cardiovascular diseases, breast and pancreatic cancer, non-Hodgkin's lymphoma, neurodegeneration, multiple sclerosis, kidney stones, and eye diseases; and (8) sleep and shift work and chronic diseases. CONCLUSIONS: The NHS findings have influenced public health policy and practice both locally and globally to improve women's health.