Final answer:
Risk factors for PMS include hormonal changes, particularly in estrogen and progesterone levels, as well as lifestyle factors like lack of exercise and poor diet. Stress and individual health conditions can also contribute to the severity of PMS symptoms.
Step-by-step explanation:
Risk factors for developing Premenstrual Syndrome (PMS) may include a range of physiological and psychological factors. Hormonal fluctuations and changes in the levels of estrogen and progesterone, as seen during the menopausal transition, can have various effects on the body, potentially contributing to PMS symptoms. Lifestyle factors like lack of exercise and poor diet may also exacerbate PMS symptoms. Additionally, stress has been identified as a risk factor for depression, which can in turn relate to PMS. It's important to note that individual experiences with PMS can vary widely from entirely absent to severe symptoms.