Final answer:
The primary goal of the Nurses' Health Study in 1976 was to investigate the long-term health effects and disease risk factors among female nurses.
Step-by-step explanation:
The primary goal of the Nurses' Health Study in 1976 was to investigate the long-term health effects and disease risk factors among female nurses.
The study aimed to collect comprehensive data on various aspects of women's health, including lifestyle factors, such as diet and exercise, reproductive history, and the development of diseases like cancer and cardiovascular diseases.
The study has been instrumental in providing valuable insights into the prevention and treatment of various health conditions in women.