Natural Ways to Boost Testosterone

Before considering TRT, it's worth understanding what you can do naturally to support healthy testosterone levels. For some men, lifestyle changes alone can produce meaningful improvements. For others — particularly those with clinically low testosterone caused by a medical condition — TRT may be necessary. Here's what the evidence says.

1. Lose excess body fat

This is the single most impactful natural intervention. Excess body fat — particularly visceral fat around the abdomen — increases aromatase activity, converting more testosterone to oestrogen. According to Healthy Male, obesity is one of the strongest predictors of low testosterone, and losing weight can significantly increase levels.

Studies show that overweight men who lose 10–15% of their body weight through diet and exercise can see testosterone increases of 100–200 ng/dL (3.5–7 nmol/L).

2. Prioritise sleep

Testosterone production is closely tied to sleep quality. Most testosterone is produced during deep sleep (particularly in the first few hours). Research shows that men who sleep less than 5 hours per night have significantly lower testosterone than those who sleep 7–8 hours.

Practical steps: maintain a consistent sleep schedule, avoid screens before bed, keep the bedroom cool and dark, and treat sleep apnoea if present (sleep apnoea itself can suppress testosterone).

3. Resistance training

Compound movements — squats, deadlifts, bench press, rows — produce the largest acute testosterone response. Consistent resistance training also improves body composition, which supports testosterone indirectly by reducing fat mass.

The key is consistency over intensity. Overtraining and chronic endurance exercise (marathon-level running) can actually suppress testosterone.

4. Manage chronic stress

Cortisol (the stress hormone) and testosterone have an inverse relationship. Chronic psychological stress elevates cortisol, which directly suppresses the hypothalamic-pituitary-gonadal axis and reduces testosterone production.

This doesn't mean a stressful week will tank your testosterone — it's chronic, sustained stress over months that matters.

5. Nutrition fundamentals

No single food "boosts testosterone." What matters is adequate nutrition overall:

• Adequate calories: Severe caloric restriction lowers testosterone. Crash diets and extreme deficits are counterproductive.
• Sufficient fat intake: Testosterone is synthesised from cholesterol. Very low-fat diets (<15% of calories) have been associated with lower testosterone levels.
• Zinc and magnesium: Deficiencies in these minerals are linked to lower testosterone. Oysters, red meat, pumpkin seeds, and dark leafy greens are good sources.
• Vitamin D: Some evidence suggests that correcting vitamin D deficiency may modestly improve testosterone. The Australian Government's Healthdirect notes that vitamin D deficiency is common in Australia despite the climate.

6. Limit alcohol

Heavy alcohol consumption suppresses testosterone production and increases oestrogen conversion. Moderate drinking (1–2 standard drinks) has minimal impact, but regular heavy drinking is one of the most common lifestyle contributors to low testosterone.

What about "testosterone booster" supplements?

The supplement industry markets hundreds of products claiming to boost testosterone — ashwagandha, tribulus terrestris, fenugreek, D-aspartic acid, etc. The evidence for most of these ranges from weak to non-existent. Some may produce modest, statistically significant changes on blood tests, but the effect sizes are almost always clinically insignificant — nowhere near what TRT achieves.

Save your money. If your testosterone is genuinely low, supplements won't fix it. If your testosterone is normal, you don't need to fix it.

When lifestyle changes aren't enough

Lifestyle optimisation is always step one. But there are situations where it won't be sufficient:

• Primary hypogonadism — the testes can't produce adequate testosterone regardless of lifestyle
• Pituitary or hypothalamic conditions — the signalling system is impaired
• Genetic conditions like Klinefelter syndrome
• Severely low testosterone (below 8 nmol/L) — unlikely to normalise with lifestyle alone

In these cases, TRT may be clinically appropriate. Your GP will assess your blood work, symptoms, and underlying cause to determine whether medical intervention is needed.