Risk factors for pms that you cannot control include:

Risk factors for (Premenstrual Syndrome) PMS that you cannot control include:
- an family history of PMS
- age : PMS becomes more common as women age through their 30.
Other risk factors like high caffeine intake, anxiety, depression, or other mental health problems, lack of exercise can be controlled. 

1.controls blood flow2.controls oxygen flow3.carries oxygen rich blood to veins