8 Ways To Support Your Testosterone - Ranked By How Well They Work -

Written by Tanveer Quraishi · Fact-checked against peer-reviewed research and NHS guidance · Last verified: August 2026

Quick Answer

What actually raises testosterone naturally? Three things carry most of the evidence: sleeping seven to nine hours, resistance training combined with losing excess body fat, and correcting a genuine vitamin D or zinc deficiency. Cutting heavy drinking and stopping smoking come next — one large study found chronic drinkers averaged 12% lower testosterone than non-drinkers, and non-smokers 4–9% higher than smokers. The popular advice about plastic bottles, frying pans and underwear sits at the weak end of the evidence, and none of it will offset poor sleep or excess body fat.

Most articles on this topic list eight things as though they were equally important. They aren’t, and treating them as equivalent is how people end up buying a glass water bottle while sleeping five hours a night.

So this version ranks them. Strongest evidence first, weakest last, with what the research actually shows for each.

Key Takeaways

Three things do most of the work. The rest are worth knowing about and won’t rescue the first three.

Sleep is the biggest single lever. A week of restricted sleep in healthy young men reduced daytime testosterone measurably — more than most supplements claim to add.
Body fat and resistance training matter more than any individual food. Fat tissue converts testosterone to oestrogen, and higher-frequency strength training is associated with lower odds of low testosterone.
Correcting a deficiency helps; topping up a normal level doesn’t. That’s the honest position on vitamin D and zinc, and it’s why a blood test beats guessing.
Alcohol and smoking both show measurable associations. In one large analysis chronic drinkers averaged 12% lower testosterone than non-drinkers, and non-smokers 4–9% higher than smokers.
Endocrine disruptors are real but oversold. Some chemical exposures are associated with lower testosterone in population data — the effect sizes are modest and the human evidence is far weaker than the headlines suggest.
If symptoms persist, get tested rather than self-treating. Fatigue, low libido and mood changes have many causes, and a blood test distinguishes them.

The order matters more than the list. Fixing sleep, training and body fat will do more than every other item here combined — and no supplement substitutes for them.

How We’ve Ranked These

Tier	What it means	Which factors
Strong	Consistent human evidence, meaningful effect sizes	Sleep, body fat and training, correcting deficiencies
Moderate	Real associations, smaller or less consistent effects	Alcohol, smoking, chronic stress
Weak	Plausible mechanism, limited or mixed human data	Endocrine disruptors, heat exposure

Strong Evidence

Sleep

Strong evidence

The single most effective thing on this list, and the one most people are worst at. Testosterone release is tied to sleep architecture, so restricting sleep restricts production directly rather than indirectly.

Controlled research on healthy young men found that a week of sleeping around five hours a night lowered daytime testosterone by roughly 10–15% [1]. That’s a larger swing than most supplements claim to deliver, produced by one week of a habit millions maintain for years.

What to do: seven to nine hours, consistent timing, and treat it as the intervention rather than the thing you sacrifice for one. If you’re doing everything else on this list on five hours’ sleep, you’re working against yourself.

Body fat and resistance training

Strong evidence

These belong together because they act on the same problem from two directions. Adipose tissue contains aromatase, the enzyme that converts testosterone to oestrogen — so more fat mass means more conversion.

A large analysis of older men found low testosterone significantly associated with higher fat mass and lower muscle mass, while higher-frequency strength training was associated with reduced odds of low testosterone [2]. The same study noted regular aerobic exercise over twelve weeks raised testosterone by around 9% in adult men.

What to do: compound lifts two to four times a week with genuine progression, and enough of a calorie deficit to reduce excess fat if you’re carrying it. Both levers pull the same way.

Correcting a real deficiency

Strong — conditional

Vitamin D and zinc are both involved in testosterone production, and correcting a genuine shortfall can improve levels. The conditional part is the whole point: it works if you’re deficient and does very little if you aren’t.

Vitamin D deficiency is common in the UK, particularly between October and March when sunlight is insufficient for skin synthesis — which is why the NHS advises considering a daily supplement over winter [3]. Zinc is found in meat, shellfish, dairy and legumes, and outright deficiency is less common in people eating adequately.

What to do: a winter vitamin D supplement is sensible for most UK adults regardless. For zinc, eat the foods rather than megadosing — high-dose zinc supplementation interferes with copper absorption and isn’t harmless.

Moderate Evidence

Alcohol

Moderate evidence

Alcohol affects testosterone through several routes at once — direct effects on the testes, disrupted sleep, and added body fat from the calories.

In one analysis of health behaviours and hormone levels, chronic drinkers averaged around 12% lower testosterone than non-drinkers [2]. Heavy consumption also acutely suppresses production, which is why testing guidance commonly advises avoiding alcohol before a blood test.

What to do: the effect scales with intake, so reduction helps even without abstinence. If you’re getting tested, leave 24–48 hours clear beforehand or the result won’t represent your baseline.

Smoking

Moderate evidence

Less discussed than the others and better evidenced than most of them.

The same analysis found non-smokers had 4–9% higher testosterone than smokers among adults at normal weight without major comorbidities, and identified smoking cessation as one of the behaviours associated with lower odds of low testosterone [2].

What to do: NHS Stop Smoking Services are free and roughly triple the chance of quitting successfully compared with willpower alone. Worth knowing that this one appears on almost no testosterone listicle, despite carrying better evidence than most items that do.

Chronic stress

Moderate evidence

Sustained cortisol elevation and testosterone tend to move in opposite directions, so prolonged psychological stress is a plausible and reasonably supported drag on levels.

One correction, though, since it circulates widely in gym advice: the claim that training beyond sixty minutes raises cortisol enough to meaningfully harm testosterone is not well supported. Training itself raises cortisol acutely, which is normal and part of the adaptive response — the concern is chronic, unmanaged stress rather than a long session.

What to do: the interventions that work here are unglamorous — sleep, exercise, daylight, and addressing the source. If low mood is persistent, that’s a GP conversation, since depression and low testosterone share several symptoms and only one of them is fixed by training harder.

Weak Evidence

Endocrine disruptors: plastics, packaging, non-stick pans

Weak evidence

This is where most articles on the subject spend their energy, and where the evidence is thinnest. The mechanism is real — some industrial chemicals do interact with hormone systems — but the human data is far more modest than the headlines.

A large analysis of US survey data examined 110 individual chemicals against serum testosterone and found associations with low testosterone for two of them, at roughly double the odds between highest and lowest exposure quartiles [4]. Two associations out of 110 chemicals is a meaningfully different picture from “plastics are destroying male hormones”.

What to do, proportionately: avoid heating food in plastic containers, don’t leave water bottles in hot cars, and replace non-stick pans once the coating is damaged. These are cheap and sensible. They are not a substitute for anything in the strong-evidence tier.

Heat exposure and underwear

Weak — and often misreported

The testes sit outside the body because sperm production needs a lower temperature, and heat does affect them. But the research most often cited here measured sperm parameters, not testosterone — men wearing looser underwear showed higher sperm concentration, which is a fertility finding rather than a hormonal one.

Treating that as testosterone advice is a category error, and it’s repeated on almost every page covering this topic — including, until this update, on ours.

What to do: if fertility is your concern, looser underwear and avoiding prolonged hot baths or laptop-on-lap heat are reasonable and low-cost. If testosterone is your concern, this is the least useful item on the list.

The pattern worth noticing: the items that get the most attention online are the ones with the weakest evidence, and the ones with the strongest evidence are the ones that require actual effort. Changing a water bottle is easy; fixing your sleep isn’t — which is precisely why the easy advice spreads further.

Where Supplements Fit

Natural testosterone support supplements sit alongside the list above rather than replacing any part of it. They contain no hormones — they’re combinations of vitamins, minerals and botanicals aimed at supporting your own production.

The honest expectation follows from item three on this list: ingredients like vitamin D, zinc and magnesium help most in people who were short of them. If your levels are already adequate and your sleep and training aren’t, a supplement is the least useful place to spend money.

Where We Land on TestoPrime

A testosterone support supplement, not a hormone — with expectations set by this article rather than the marketing.

TestoPrime

Wolfson Brands · natural testosterone support · daily capsules

Contains no testosterone and cannot replicate replacement therapy
Built around vitamins, minerals and botanicals aimed at supporting natural production
Legal to buy and possess, with a published ingredient panel and a traceable manufacturer
Most likely to help if you were low in something it contains — least likely if you weren’t
No substitute for sleep, training or reducing excess body fat

Read Our Full TestoPrime Review

Food supplement, not a medicine: not intended to diagnose, treat, cure or prevent any disease. Results vary. Speak to a doctor before use if you take medication or have a health condition. The links above go to our own review page, which contains affiliate links — we may earn a commission at no extra cost to you, and it never affects our assessment.

When to Stop Self-Treating and Get Tested

Everything above is about supporting normal function. If you suspect something is actually wrong, that’s a different question with a different answer.

Persistent fatigue, reduced libido, erectile difficulties, loss of muscle despite training, and low mood are the common symptoms — and they’re non-specific, which is exactly why guessing is a poor strategy. Depression, thyroid problems, sleep apnoea and anaemia all produce overlapping pictures.

A GP can arrange a blood test if there’s a clinical indication. Levels vary through the day, so testing is usually done in the morning, and a single result isn’t normally enough to act on.

One thing worth knowing: anabolic steroid use suppresses natural testosterone production, sometimes for months after stopping. If that’s relevant to your situation, say so — it changes the interpretation of any result, and our guide to how these compounds differ covers why.

FAQ

What raises testosterone the fastest?

Nothing on this list works overnight. Sleep produces the quickest measurable change — restricted sleep lowers testosterone within a week, and restoring it works in the same direction. Body composition changes take months.

Do testosterone boosters actually work?

They can help modestly if they correct a deficiency you actually have. They don’t replicate testosterone replacement therapy, and any product implying otherwise is describing marketing rather than pharmacology.

Does drinking from plastic bottles lower testosterone?

The evidence is weaker than commonly claimed. Some chemical exposures are associated with lower testosterone in population data, but effect sizes are modest — and avoiding plastic won’t offset poor sleep or excess body fat.

Does tight underwear lower testosterone?

The research usually cited measured sperm parameters rather than testosterone. It’s a reasonable fertility precaution and a poor testosterone strategy.

How do I know if my testosterone is low?

A blood test, usually taken in the morning, arranged through your GP if there’s a clinical indication. The symptoms overlap with several other conditions, which is why testing rather than assuming is the right route.

Can exercise lower testosterone?

Regular resistance and aerobic training are associated with better levels. The “over an hour and cortisol ruins it” claim is gym folklore — chronic under-recovery is a genuine issue, a long session on its own is not.

References

Leproult R, Van Cauter E. Effect of 1 week of sleep restriction on testosterone levels in young healthy men. JAMA. 2011;305(21):2173–2174. https://pubmed.ncbi.nlm.nih.gov/21632481/
Prevalence of Low Testosterone According to Health Behavior in Older Adult Men. Int J Environ Res Public Health. 2021. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7824172/
NHS — Vitamin D. https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/
Low Serum Testosterone Levels Are Associated with Elevated Urinary Mandelic Acid and Strontium Levels in Adult Men (NHANES 2011–2012). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4440739/
Low free testosterone is associated with hypogonadal signs and symptoms in men with normal total testosterone levels — European Male Ageing Study. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4582226/
NHS — Erection problems (erectile dysfunction). https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/
NHS — Anabolic steroid misuse. https://www.nhs.uk/conditions/anabolic-steroid-misuse/

This article is for information only and is not medical advice. Food supplements are not medicines and are not intended to diagnose, treat, cure or prevent any disease. If you have persistent symptoms of low testosterone, speak to your GP rather than self-treating. This page links to our own review pages, which contain affiliate links; we may earn a commission at no extra cost to you, and it never affects our assessments.

Tanveer

Tanveer Quraishi, author of Steroids 101 has extensive experience in the field of bodybuilding and has been writing online on various muscle-building and other health topics for many years now. He is not just interested in bodybuilding but is a great football player too. When he is not writing for his site or training at the gym, he loves to spend his time with this wife and kids.

8 Ways To Support Your Testosterone – Ranked By How Well They Work

How We’ve Ranked These

Strong Evidence