Of those effects, on the relatively mild end of the spectrum are nausea, headache, breast tenderness, weight gain, irregular bleeding, decrease in sexual desire, less enjoyable orgasms, and pain during sex. Even more serious are the known life-threatening risks, including increased blood pressure, blood clots, heart attack, and stroke.
1. There are Two Types of Birth ControlMost birth control pills contain two types of hormones: synthetic estrogen and progestin (synthetic progesterone). A few contain solely synthetic progesterone. It's important to understand that no one truly knows the full effects of birth control pills, in spite of the fact that they've been in use for about 50 years. The fact is that there are increasing rates of many chronic diseases and their causes are generally unknown. How much of this problem could be a result of birth control pills?
2. Birth Control May Interfere with Natural DetoxificationHaving a period may seem like a nuisance, but it's a very good way for the body to release toxins. Some toxins accumulate in our blood, and the release of this blood may reduce toxic overload. What are the long-term effects of injected contraceptives that suppress menstruation? No one really knows, and making a connection could be quite difficult in a world where toxins are everywhere.
3. Injected Contraceptives May Promote Blindness and BleedingIn the relatively short term, many women have had terrible problems with injected contraceptives. Leslie Botha, who produces Holy Hormones Journal, has looked in-depth at two of them, and the picture isn't pretty. Implanon, which can prevent pregnancy for as long as 3 years, has been implicated in some serious harms. The drug uses a progesterone-like hormone Etonogestrel, which is similar to the hormone used in Norplant, the contraceptive pill that was removed from the market in 2002 for causing blindness in one woman.  Implanon has caused prolonged bleeding—from 2 to 26 weeks—in some women. Removal of the rod-shaped device, which is usually implanted in the upper arm, can be tricky because it often migrates and is difficult to find. 
4. Synthetic Estrogen May Increase Osteoporosis Risk
Depo-Provera, along with most progestin-only contraceptives, prevents conception by drying and thickening the cervical mucus. This, in turn, prevents most sperm from reaching the cervix. It also thins the uterine lining, preventing the implantation of a fertilized egg in case a sperm makes the trip. Usually, the drug suppresses menstruation by suppressing signals from the hypothalamus and pituitary, both of which control the monthly cycle. Progestin suppresses estrogen, sometimes resulting in the thinning of bones. Women known to be at risk for osteoporosis who take synthetic estrogen are known to suffer more broken bones. Many women take oral or injected contraceptives because of problems with irregular periods, monthly pain, heavy or prolonged bleeding, or other concerns. However, as noted earlier, suppressing the symptoms of a problem does not solve it. Whatever is causing the problem is still there—and it could worsen without your awareness.  
What type of birth control do you use? Are you concerned about negative health effects? Please let us know your thoughts in the comments!
- Malek N, Lebuisson DA. Adverse ocular reactions to oral contraceptive use. Contraception, Fertilié, and Sexualité. April 1992. PMID: 12317484.
- Heidarzadeh A, Asadi B, Saadatnia M, Ghorbani A, Fatehi F. The Effect of Low-Dose Combined Oral Contraceptive Pills on Brachial Artery Endothelial Function and Common Carotid Artery Intima-Media Thickness. Journal of Stroke and Cerebrovascular Diseases. July 5, 2013. doi: 10.1016/j.jstrokecerebrovasdis.2013.06.007.
- Wu CQ, Grandi SM, Filion KB, Abenhaim HA, Esenberg MJ. Drospirenone- containing oral contraceptive pills and the risk of venous and arterial thrombosis: a systematic review. June 2013. doi: 10.1111/1471-0528.12210.
- Lalude OO. Risk of cardiovascular events with hormonal contraception: insights from the Danish cohort study. Current Cardiology Reports. July 15, 2013. doi: 10.1007/s11886-013-0374-2.
- Melissa Conrad Stöppler, MD and Jay W. Marks, MD. Birth Control Pills (Oral Contraceptives). Medicine Net.
†Results may vary. Information and statements made are for education purposes and are not intended to replace the advice of your doctor. Global Healing Center does not dispense medical advice, prescribe, or diagnose illness. The views and nutritional advice expressed by Global Healing Center are not intended to be a substitute for conventional medical service. If you have a severe medical condition or health concern, see your physician.