8. After addiction, withdrawal from the use of caffeine can cause mood swings and irritability, similar to the symptoms of withdrawing from a narcotic or alcohol. 9. Consuming as little as 200mg of caffeine every day can lead to addiction and altered chemistry in the brain.
Progestin is a form of progesterone, a hormone that plays a role in the menstrual cycle and pregnancy. Progestin is used in combination with another hormone called estrogen in combined hormonal birth control pills, the vaginal ring, and the skin patch.
First, the progestin-only pill thickens the mucus between your uterus and your vagina. Sperm have a hard time getting through the thick mucus to reach the egg. Second, like regular birth control pills, the progestin-only pill makes your body think that you are pregnant and stops your ovary from releasing an egg. This does not happen as often as with combination birth control pills. Forty percent of women taking the progestin only pill will continue to ovulate.