Low Testosterone and Weight Gain in Women: The Hormone Connection
When most people think about testosterone, they think about men. But testosterone is an essential hormone in women too — produced by the ovaries and adrenal glands, circulating in smaller amounts than in men but playing critical roles in energy, metabolism, muscle maintenance, bone density, mood, and body composition. When testosterone falls too low in women, the effects are wide-ranging, and unexplained weight gain is among the most common and frustrating consequences.
How Women Produce Testosterone
Women produce testosterone through two primary pathways: direct secretion from the ovaries and adrenal glands, and peripheral conversion from androgen precursors like DHEA and DHEA-S. The ovaries are the dominant source of testosterone in premenopausal women, which is why surgical removal of the ovaries (oophorectomy) causes an immediate and dramatic drop in testosterone levels. Even natural menopause, which involves the gradual cessation of ovarian function, results in a significant reduction in testosterone production — though notably, testosterone does not fall as sharply as estrogen and progesterone in the menopausal transition.
DHEA, produced primarily by the adrenal glands, serves as a precursor to testosterone and estrogens in both men and women. As DHEA levels decline with aging — typically peaking in the mid-twenties and falling steadily thereafter — the substrate available for testosterone production decreases accordingly.
Recognizing Low Testosterone Symptoms in Women
The symptoms of low testosterone in women are often subtle initially and can overlap with other hormonal imbalances, making them easy to miss or attribute to the wrong cause. Common signs include persistent fatigue despite adequate sleep, reduced libido and sexual responsiveness, difficulty building or maintaining muscle mass, increased body fat especially around the abdomen and hips, low mood or a flattened emotional affect, reduced motivation and drive, cognitive fog, and decreased bone density. Many women describe feeling "like a shadow of themselves" — functional but depleted.
The Metabolic Connection: How Low Testosterone Drives Weight Gain
Testosterone plays several metabolic roles in women that directly influence body weight and fat distribution. First, testosterone supports the maintenance of lean muscle mass. Muscle tissue is metabolically active — it burns calories at rest — and women with low testosterone tend to lose muscle more readily, which reduces resting metabolic rate and makes weight management progressively more difficult.
Second, testosterone improves insulin sensitivity. When insulin sensitivity declines, the body secretes more insulin in response to carbohydrates, and elevated insulin is one of the strongest signals for fat storage, particularly visceral fat. Low testosterone is associated with reduced insulin sensitivity and increased visceral adiposity — the metabolically harmful fat that accumulates around the abdominal organs.
Third, testosterone influences the activity of lipoprotein lipase, the enzyme responsible for directing fat into fat cells for storage. Low testosterone tilts this balance toward fat storage rather than fat burning, compounding the effects on body composition. The result is a pattern many women recognize: weight gain that does not respond proportionately to diet and exercise, fat accumulating in new places, and a frustrating inability to lose weight despite genuine effort.
BHRT Testosterone for Women: Restoring Balance
Bioidentical testosterone therapy for women uses hormone preparations that are molecularly identical to the testosterone produced naturally by the body, delivered in doses appropriate for female physiology — which are significantly lower than doses used in men. When testosterone is restored to optimal levels, women commonly experience improvements in energy, body composition, libido, mood, and exercise capacity.
Testosterone therapy for women is most effective when considered as part of a comprehensive hormonal evaluation that also assesses estrogen, progesterone, thyroid function, cortisol, and insulin — because multiple hormones interact to regulate metabolism, and addressing testosterone in isolation may not fully resolve weight management difficulties if other imbalances are also present.
Take Control of Your Hormonal Health
If you are a woman struggling with unexplained weight gain, persistent fatigue, reduced libido, or low mood despite healthy lifestyle habits, a hormonal evaluation may reveal the missing piece of the puzzle. Dr. Kenton Bruice MD offers comprehensive hormone testing and individualized bioidentical hormone therapy for women at his practices in Denver, Aspen, and St. Louis. We encourage you to schedule a consultation with Dr. Bruice to gain a clear picture of your hormonal health and explore the treatment options available to you.