Summary of Testosterone
Primary Information, Benefits, Effects, and Important Facts
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The manly man hormone, testosterone is the most well known androgen that mediates androgenic processes such as muscle building, fat loss, some aspects of cognition and hair loss in some persons; important in puberty, it is sought after for its muscle building potential in men.
Our evidence-based analysis features 176 unique references to scientific papers.
If you are looking for an actual stack of supplements to take, we recommend you look at our increasing testosterone stack.
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test
Q: Does ejaculation affect testosterone levels?
A: Ejaculation results in changes in prolactin (increase) and dopamine (temporary decrease), but does not result in changes in testosterone. Although prolactin and dopamine are both involved with testosterone, they do not appear to influence testosterone levels acutely.
Read full answer to "Does ejaculation affect testosterone levels?"
Q: Does creatine cause hair loss?
A: It’s plausible, but unlikely. One RCT linked creatine supplementation to an increase in DHT — an androgen involved in hair loss — but this RCT has never been replicated.
Read full answer to "Does creatine cause hair loss?"
Q: Do herbal aphrodisiacs work?
A: It depends on the product touted to be an aprhodisiac, but some of them do apparently increase sexual desire; it is a relatively underresearched topic though, and we don't know why they increase sexuality
Read full answer to "Do herbal aphrodisiacs work?"
Q: Does ashwagandha increase testosterone?
Read full answer to "Does ashwagandha increase testosterone?"
Q: What is 'roid rage'?
A: Mostly a myth; testosterone (including injections) can increase impulsivity in some but this does not appear to be reliable (does not affect every person tested), impulsivity might lead to aggression but this is drawing at straws now with the connections
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Q: Can creatine increase your testosterone levels?
A: There is no convincing evidence that creatine can increase your testosterone levels.
Read full answer to "Can creatine increase your testosterone levels?"
Q: Is semen high in protein?
A: Yes. Semen is 50% protein by weight and contains a variety of nutrients to protect the sperm cells from damages.
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Q: How can you increase testosterone naturally?
A: Quality sleep, physical activity, and weight management come first. A few supplements can help sustain healthy testosterone levels, but most supplements marketed as testosterone boosters don’t work, though some can make you believe they do by boosting your libido.
Read full answer to "How can you increase testosterone naturally?"
Q: How important is sleep?
A: Sleep is incredibly important, and can be considered crucial alongside diet and exercise. Proper sleep habits help sustain many biological processes, and bad sleep can cause these processes to be suboptimal or even malfunction.
Read full answer to "How important is sleep?"
Q: Four Testosterone Boosters and Sketchy Research
Read full answer to "Four Testosterone Boosters and Sketchy Research"
The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect testosterone
Grade | Level of Evidence |
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Robust research conducted with repeated double-blind clinical trials | |
Multiple studies where at least two are double-blind and placebo controlled | |
Single double-blind study or multiple cohort studies | |
Uncontrolled or observational studies only |
Level of Evidence ?
The amount of high quality evidence. The more evidence, the more we can trust the results.
|
Outcome |
Magnitude of effect ?
The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
|
Consistency of research results ?
Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
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Notes |
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Dehydroepiandrosterone |
All comparative evidence is now gathered in our A-to-Z Supplement Reference. The evidence for each separate supplement is still freely available here. |
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Alcohol | ||||
Caffeine | ||||
Creatine | ||||
Zinc | ||||
Fenugreek | ||||
HMB | ||||
Maca | ||||
Red Clover Extract | ||||
Tribulus terrestris | ||||
Velvet Antler | ||||
Ashwagandha | ||||
Coenzyme Q10 | ||||
Coleus forskohlii | ||||
D-Aspartic Acid | ||||
Licorice | ||||
Mucuna pruriens | ||||
Panax ginseng | ||||
Royal Jelly | ||||
Shilajit | ||||
Vitamin D | ||||
7-Keto DHEA | ||||
Alanylglutamine | ||||
Arachidonic acid | ||||
Arginine | ||||
Astaxanthin | ||||
Beta-Alanine | ||||
Chromium | ||||
Chrysin | ||||
Colostrum | ||||
Ecdysteroids | ||||
Eurycoma Longifolia Jack | ||||
Fish Oil | ||||
Gamma Oryzanol | ||||
Ganoderma lucidum | ||||
Garcinia cambogia | ||||
Glutamine | ||||
Green Tea Catechins | ||||
L-Carnitine | ||||
Magnesium | ||||
Nicotine | ||||
Phosphatidylserine | ||||
Saffron | ||||
Saw Palmetto | ||||
Stinging Nettle | ||||
Boron | ||||
Ginger | ||||
Calcium | ||||
Grape Seed Extract | ||||
Punicalagins | ||||
Rubus coreanus | ||||
Yohimbine |
"Testosterone," Examine.com, published on 14 November 2012, last updated on 27 April 2018, https://examine.com/topics/testosterone/