5 Supplements That Actually Show Promise For Raising testosterone and why it matters.

5 Supplements That Actually Show Promise

for Raising Testosterone — And Why This Matters for Everyone

Nutrition & Performance · 7–8 min read

Rising Sun Community Fitness · East Nashville

We’re cutting through the influencer noise. These five supplements have real peer-reviewed evidence behind them — and the section on why testosterone matters for women might be the most important part of this entire article.

The testosterone supplement market is an absolute minefield. For every product backed by legitimate science, there are thirty others selling you hope in capsule form with cherry-picked studies, paid endorsements, and dosages nowhere near what the research actually used.

At Rising Sun Community Fitness, we don’t sell supplements and we don’t have a stake in what you buy. What we do care about is that our members make informed decisions.

First: Why Does Testosterone Matter for Athletic Performance?

Testosterone is the body’s primary anabolic hormone. It drives muscle protein synthesis, supports bone density, regulates energy metabolism, influences mood and motivation, and plays a central role in recovery from training. In the context of functional fitness — where we’re asking our bodies to lift heavy, move fast, recover quickly, and show up consistently — testosterone levels matter a great deal.

Chronically low levels correlate with reduced strength gains, slower recovery, increased body fat, mood disturbances, and reduced motivation in training. These compound over time and can significantly blunt progress regardless of how well-programmed your training is.

A Word Before We Dive In

Important context — None of these supplements are magic, and none replace the fundamentals: quality sleep, adequate dietary fat, resistance training, managing chronic stress, and not being in a severe caloric deficit. If those foundations aren’t solid, no supplement will meaningfully move the needle. These are amplifiers, not substitutes.

1. Ashwagandha (Withania somnifera)

Evidence tier: Strong

Ashwagandha is an adaptogenic herb with a genuinely impressive body of research behind it for testosterone support. The mechanism is primarily through cortisol reduction — chronic cortisol elevation suppresses testosterone production at the level of the hypothalamic-pituitary-gonadal axis. Lower cortisol, higher T.

Multiple randomized controlled trials have shown statistically significant increases in serum testosterone with ashwagandha supplementation. A 2019 study in Medicine & Science in Sports & Exercise showed significant testosterone increases alongside improved muscle recovery, VO2 max improvements, and reduced exercise-induced muscle damage compared to placebo over 8 weeks.

Practical dosing: 300–600mg of a standardized extract (KSM-66 or Sensoril) taken daily. Effects build over 4–8 weeks.

For women: Ashwagandha’s cortisol-reducing effects are equally valuable — possibly more so. It also shows promise for supporting thyroid function and reducing anxiety without sedation.

2. Zinc

Evidence tier: Strong (if deficient)

Zinc is an essential mineral directly involved in testosterone synthesis and regulation. Zinc deficiency is robustly associated with low testosterone, and research consistently shows that correcting a deficiency restores testosterone to appropriate levels. A foundational study demonstrated that restricted zinc intake in healthy men caused a significant drop in testosterone, while supplementation in deficient individuals nearly doubled their levels over six months.

Deficiency is far more common than people realize — particularly in athletes who sweat heavily, vegetarians, and anyone eating a diet low in red meat, shellfish, or legumes.

Practical dosing: 25–45mg elemental zinc daily (zinc glycinate or zinc picolinate for best absorption). Don’t massively exceed this — zinc toxicity is real.

For women: Zinc plays important roles in estrogen and progesterone balance, immune function, and skin health. Many women are mildly zinc deficient without knowing it.

3. Vitamin D3

Evidence tier: Strong (if deficient)

Vitamin D3 functions more like a steroid hormone than a traditional vitamin, and its receptors are found in the Leydig cells of the testes — the very cells responsible for testosterone production. A randomized controlled trial published in Hormone and Metabolic Research showed that men supplementing with 3,332 IU of vitamin D3 daily for a year had significantly higher testosterone levels than the placebo group — a difference of roughly 25%.

Vitamin D deficiency is epidemic in modern life — estimates suggest 40 to 70% of Americans are deficient or insufficient. In East Nashville, we’re not getting the sun exposure most people assume, especially in the fall and winter months.

Practical dosing: 2,000–5,000 IU D3 daily with a fat-containing meal. Pair with vitamin K2 (MK-7 form). Get your levels tested.

For women: Vitamin D supports bone density, immune regulation, mood, and hormonal health broadly. Critically important for women approaching perimenopause and beyond.

4. Magnesium

Evidence tier: Moderate-to-Strong

Magnesium participates in over 300 enzymatic reactions in the human body, including those involved in testosterone synthesis. It also appears to reduce the binding of testosterone to sex hormone-binding globulin (SHBG), which means more free testosterone — the biologically active form — is available for use by tissues.

A study in Biological Trace Element Research found that both sedentary men and active athletes who supplemented with magnesium for four weeks showed significant increases in free and total testosterone, with athletes showing a larger effect. Athletes lose substantial magnesium through sweat, making deficiency particularly common.

Practical dosing: 200–400mg magnesium glycinate or malate daily. Best taken in the evening.

For women: One of the most impactful supplements for PMS symptom reduction, sleep quality, anxiety, and muscle recovery. Often dramatically underutilized.

5. Fenugreek Extract

Evidence tier: Moderate

Fenugreek appears to influence testosterone through a different mechanism: inhibiting the enzymes (particularly aromatase and 5-alpha reductase) that convert testosterone into estrogen and DHT. This means it may help preserve circulating testosterone levels rather than stimulating new production.

Multiple double-blind, placebo-controlled trials using standardized fenugreek extract have shown statistically significant increases in free testosterone, improvements in sexual function and libido, and modest strength and body composition improvements.

Practical dosing: 500–600mg of standardized extract daily (Testofen standardized to 50% fenusides). Note: can cause a maple syrup-like body odor in some people.

For women: Fenugreek has solid evidence for supporting lactation in nursing mothers and shows preliminary evidence for supporting female libido and menopause symptoms.

The Part the Fitness World Under-Discusses: Testosterone and Women

Women produce testosterone too — primarily in the ovaries and adrenal glands — at roughly 1/10th to 1/20th of male levels. But those lower absolute numbers don’t mean testosterone is unimportant for women. It is critically important, and declining or suboptimal levels produce meaningful consequences that are too often dismissed, misdiagnosed, or attributed solely to estrogen changes.

In women, adequate testosterone supports:

• Muscle development and strength gains — Women with lower testosterone have noticeably harder times building and maintaining lean mass, which becomes especially significant after 40
• Bone density — Working in concert with estrogen; testosterone deficiency increases osteoporosis risk independently
• Energy levels and motivation — Low testosterone in women frequently presents as unexplained fatigue and reduced competitive edge in training
• Libido and sexual function — Testosterone is the primary hormone governing libido in women, often more so than estrogen
• Mood regulation and cognitive sharpness — Low T in women correlates with depression, brain fog, and reduced sense of well-being
• Body composition — Women with low testosterone tend toward increased body fat even with consistent training and good nutrition

Women approaching or in perimenopause often experience a sharper decline in testosterone than is widely recognized — in many cases losing significant testosterone even before estrogen decline becomes the clinical focus. If several of the above resonate with you, it’s worth a frank conversation with a functional medicine physician or OB-GYN who takes hormone health seriously.

Curious how nutrition coaching fits into your performance picture?

At Rising Sun Community Fitness, our nutrition coaching isn’t about meal plans and food rules. It’s about giving you the knowledge and strategy to fuel your training, your hormones, and your life. Let’s talk.

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