While the cause of PMS is not clearly understood, it may be described as the result of multiple factors such as:
HORMONES
During your menstrual cycle hormones fluctuate, which is thought to be the biggest factor contributing to many of the PMS symptoms.
CHEMICALS IN THE BRAIN
Hormone fluctuations may affect certain chemicals in your brain. One such chemical is serotonin, which helps to regulate moods.
LIFESTYLE
Lifestyle factors such as poor diet, stress, lack of exercise and weight gain may increase your risk of PMS.
PSYCHOSOCIAL
Environment, relationships, self-esteem, stress and depression may also increase your risk. In fact, if you are already a PMS sufferer, increased age and stress may worsen your condition.
Severe PMS (USA Institutes)
Mild PMS is self-treatable but more severe PMS symptoms may require medications that block the secretion of certain hormones. In extreme cases of PMDD justified medical or surgical elimination of the menstrual cycle (removal of the ovaries) may be required.
In the case of emotional symptoms, such as anxiety and depression, you may require counselling. A qualified practitioner can help you to find ways to manage some of your symptoms.
You cannot prevent PMS but you can reduce the severity of your symptoms by introducing healthy lifestyle habits: