Your body produces DHT (dihydrotestosterone) by converting about 10% of your testosterone into this more potent hormone each day. Anything that raises testosterone levels, increases the enzyme responsible for that conversion, or changes how your body processes hormones can push DHT higher. The causes range from natural life stages to specific medical conditions, and the effects show up differently in men and women.
How Your Body Makes DHT
DHT starts as testosterone. An enzyme called 5-alpha reductase converts testosterone into DHT, which is several times more powerful at activating androgen receptors in your tissues. There are two main versions of this enzyme. Type 2 does most of the heavy lifting, accounting for over 90% of conversion activity in tissues like the prostate. Type 1 plays a smaller role but is active in the skin, liver, and other tissues.
This means DHT levels depend on two things: how much testosterone is available as raw material, and how active the converting enzyme is. A change in either one, or both, will shift your DHT levels.
Rising Testosterone
Since DHT is made from testosterone, anything that raises testosterone typically raises DHT along with it. The most common scenarios include:
- Puberty. Testosterone surges during adolescence, and DHT rises in proportion. This is why DHT-driven changes like body hair growth, voice deepening, and genital development accelerate during the teen years.
- Testosterone replacement therapy. Supplementing testosterone gives the converting enzyme more substrate to work with, often producing a measurable increase in DHT.
- Anabolic steroid use. Synthetic testosterone and related compounds can dramatically increase both testosterone and DHT levels.
- Insulin resistance and obesity. These conditions alter the hormonal environment in ways that can increase androgen production, particularly from the adrenal glands and ovaries.
It’s worth noting that the relationship isn’t perfectly linear. Two people with the same testosterone level can have meaningfully different DHT levels depending on how active their converting enzyme is, which is largely genetic.
Increased Enzyme Activity
The converting enzyme itself can become more active, producing more DHT from the same amount of testosterone. Several things drive this.
Genetics play the largest role. Some people simply produce more of the enzyme or produce a more efficient version of it. This is a major reason why hair loss patterns run in families: genetically higher enzyme activity in scalp tissue means more DHT reaching hair follicles, regardless of total testosterone levels.
Certain hormones also regulate the enzyme directly. Research shows that luteinizing hormone (LH) and insulin-like growth factor I (IGF-I) stimulate the enzyme’s activity, while follicle-stimulating hormone (FSH) inhibits it. Conditions that shift this hormonal balance, like polycystic ovary syndrome (PCOS) in women, can ramp up local DHT production significantly.
Perhaps most interesting, DHT itself can increase the enzyme’s activity, creating a feedback loop. Even small amounts of DHT appear capable of upregulating the converting enzyme, which then produces more DHT. This self-reinforcing cycle helps explain why DHT-related problems like hair loss and prostate enlargement tend to progress over time rather than stay stable.
PCOS and DHT in Women
Polycystic ovary syndrome is one of the most common reasons women experience elevated DHT. The mechanism goes beyond simply having higher testosterone. Research published in The Journal of Clinical Endocrinology & Metabolism found that converting enzyme activity in PCOS ovarian follicles is roughly four times higher than in healthy controls. The result is a dramatic local increase in DHT and related compounds, with concentrations in the follicular fluid reaching 1,000 times the levels found in blood.
Several features of PCOS feed into this. Elevated LH levels, higher IGF-I in the follicles, and excess androgens all independently stimulate the converting enzyme. The elevated androgens are especially problematic because they trigger that self-reinforcing loop where DHT boosts its own production. Notably, the enzyme itself isn’t being produced in greater quantities. Instead, the existing enzyme is working harder, likely due to changes in how the protein is regulated after it’s made.
This excess DHT disrupts ovarian function by interfering with aromatase, the enzyme that converts androgens into estrogen. The result is a hormonal environment that makes ovulation difficult and drives symptoms like acne, excess facial or body hair, and thinning scalp hair.
Other Medical Conditions
Beyond PCOS, several conditions are associated with higher DHT levels or heightened sensitivity to DHT in specific tissues.
Benign prostatic hyperplasia (BPH), the prostate enlargement that affects most men as they age, is driven in part by DHT’s effects on prostate tissue. Interestingly, men with BPH don’t always show elevated DHT on a blood test. The problem is often local: the prostate tissue itself converts testosterone to DHT at higher rates, and DHT accumulates in the gland even when blood levels appear normal.
Congenital adrenal hyperplasia, a group of inherited conditions affecting the adrenal glands, can increase production of androgen precursors that ultimately get converted to DHT. Adrenal tumors and, rarely, ovarian or testicular tumors can also push androgen levels high enough to elevate DHT.
Lifestyle Factors
Diet and exercise influence DHT indirectly through their effects on testosterone and insulin. Resistance training, particularly heavy compound movements, temporarily raises testosterone, which can translate to a modest DHT increase. This is a normal physiological response and generally not a cause for concern.
High-sugar, high-refined-carbohydrate diets promote insulin resistance, and chronically elevated insulin stimulates androgen production. Over time, this can raise both testosterone and DHT. The link between insulin and androgens is one reason why weight management and blood sugar control are front-line strategies for managing PCOS symptoms.
Zinc and certain dietary fats support testosterone production, so diets very high in these nutrients could modestly influence DHT. However, the effect of normal dietary variation is small compared to genetic and hormonal factors.
How to Tell If Your DHT Is Elevated
A blood test is the only way to measure DHT directly. Normal ranges for adult men fall between 112 and 955 pg/mL, a wide window that reflects natural variation. For women aged 20 to 55, levels above 300 pg/mL are considered elevated. After age 55, the upper limit for women drops to 128 pg/mL, reflecting the hormonal shift of menopause.
The physical signs that often prompt testing include thinning hair at the temples or crown in men (male-pattern hair loss), excess facial or body hair in women (hirsutism), persistent adult acne that doesn’t respond well to standard treatments, and oily skin. In men, urinary symptoms like frequent urination or a weak stream can signal prostate enlargement driven by DHT.
Keep in mind that symptoms don’t always match blood levels. Tissue sensitivity to DHT matters as much as the circulating amount. Some people develop hair loss or acne with DHT levels that fall within the normal range because their hair follicles or skin cells have more androgen receptors or more active local enzyme conversion. This is why two people with identical blood results can have very different experiences.