Yes, combined birth control pills (the kind containing both estrogen and a progestin) lower testosterone levels significantly. Total testosterone can drop by up to 50%, and the biologically active form, free testosterone, drops even more. This effect is well-documented and is actually one reason doctors prescribe the pill for conditions like acne and excess hair growth. But the degree of suppression varies by the type of birth control you use, and not all methods affect testosterone the same way.
How the Pill Suppresses Testosterone
Combined oral contraceptives lower testosterone through three mechanisms working at once. First, the pill suppresses ovarian function, which reduces the amount of testosterone your ovaries produce. Second, it suppresses some testosterone production from the adrenal glands. Third, and most powerfully, the estrogen component (ethinyl estradiol) triggers your liver to produce more of a protein called sex hormone-binding globulin, or SHBG.
SHBG acts like a sponge for testosterone in your bloodstream. When SHBG levels rise, more testosterone gets bound to this protein and becomes inactive. Your body can only use “free” testosterone, the portion that isn’t attached to a carrier protein. Because the pill both reduces testosterone production and increases the protein that deactivates it, free testosterone drops roughly twice as much as total testosterone. So even if a blood test shows your total testosterone is moderately lower, the functional testosterone available to your tissues has fallen much further.
Which Types of Birth Control Have the Biggest Effect
Not all hormonal contraceptives affect testosterone equally. The progestin component matters a lot, because different progestins have different hormonal personalities. Some are mildly androgenic (they mimic testosterone to a degree), while others are actively anti-androgenic (they block testosterone’s effects).
Older progestins like norethindrone (first-generation) and levonorgestrel (second-generation) are more androgenic. They still lower overall testosterone because the estrogen in the pill drives SHBG up, but the progestin itself partially offsets that effect. Third-generation progestins like desogestrel and norgestimate are less androgenic and produce a stronger net reduction in testosterone activity. Drospirenone, sometimes called a fourth-generation progestin, is derived from spironolactone and has direct anti-androgenic properties, making it the most commonly prescribed option for treating acne and unwanted hair growth.
If your doctor has prescribed birth control specifically to manage androgen-related symptoms, the formulation matters. Pills with drospirenone or a third-generation progestin will suppress testosterone activity more effectively than those with levonorgestrel.
How Other Methods Compare
Combined pills are the strongest testosterone suppressors because they contain estrogen, which is the main driver of SHBG production. Progestin-only methods tell a different story.
A randomized trial comparing three non-pill methods found distinct patterns after six months of use. The copper IUD, which releases no hormones, left testosterone and SHBG levels essentially unchanged, making it a useful baseline for comparison. The injectable (depot medroxyprogesterone acetate, or DMPA) lowered both total testosterone and SHBG, with free testosterone staying roughly stable. The levonorgestrel implant dropped SHBG by about 50% and total testosterone by about 24%, but because SHBG fell so dramatically, free testosterone actually rose by about 14% compared to copper IUD users and 29% compared to injectable users.
This is a counterintuitive finding: the implant lowered total testosterone but increased the active form. The likely explanation is that levonorgestrel suppresses SHBG production (androgens inhibit SHBG, and levonorgestrel is an androgenic progestin), so less testosterone gets bound, leaving more in its free, active state. Combined pills produce the opposite pattern because their estrogen component overwhelms this effect and pushes SHBG levels up instead.
If you’re concerned about testosterone suppression and want a hormonal option with minimal impact, progestin-only methods generally lower free testosterone less than combined pills. The copper IUD has no measurable effect on testosterone at all.
Symptoms You Might Notice
Testosterone plays a role in libido, energy, mood, and muscle maintenance in women. When the pill cuts free testosterone levels substantially, some women notice changes in these areas. Reduced sex drive is one of the most commonly reported side effects, and research supports a link between the pill’s testosterone suppression and decreased sexual desire in some users.
Mood changes are another frequently reported issue. A large Danish study of more than one million women found an increased risk of first-time antidepressant use and first depression diagnosis among hormonal contraceptive users, with the highest rates among adolescents. Mood disruption is one of the most common reasons women stop taking the pill. The relationship between hormonal contraception and depression is complex and doesn’t affect everyone, but it’s a real pattern, particularly in younger users and those with a history of mood disorders. Progestin-only methods also appear to increase susceptibility to depressive symptoms in vulnerable women.
On the other hand, the testosterone-lowering effect is genuinely beneficial for women dealing with androgen-driven symptoms. Acne often improves within a few months on the pill, and excess facial or body hair growth slows over time, though the American College of Obstetricians and Gynecologists notes it typically takes about six months of treatment before you’ll see noticeably finer and slower hair regrowth.
What Happens When You Stop
Testosterone levels do recover after discontinuing the pill, but not immediately. A prospective study tracking women after they stopped oral contraceptives found that both SHBG and all measured androgens returned to pre-pill baseline levels within about eight weeks. This study was conducted in women with polycystic ovary syndrome, who tend to have higher baseline androgen levels, so the timeline for women without PCOS could differ somewhat.
During those first weeks off the pill, SHBG levels are still elevated, which means free testosterone stays suppressed for a period even as your ovaries resume normal production. Some women report a temporary adjustment phase with skin breakouts, mood shifts, or changes in libido as hormone levels recalibrate. The trajectory is generally toward full recovery within two to three menstrual cycles.
Why This Matters for Your Choice
The testosterone-lowering effect of birth control is neither universally good nor bad. It depends entirely on your body and your goals. For someone with PCOS, severe acne, or hirsutism, the androgen suppression is the point. For someone who notices low libido or mood changes on the pill, the same suppression may be an unwanted trade-off.
The type of method and the specific formulation both shape how much your testosterone is affected. Combined pills with anti-androgenic progestins like drospirenone produce the strongest suppression. Progestin-only methods have a smaller and more variable effect on free testosterone. The copper IUD leaves your testosterone levels untouched. Knowing these differences gives you a more informed starting point for choosing a method, or for understanding symptoms you’re already experiencing on one.