Discussing the clinical utility of these findings, Dr. Budoff told EndocrineWeb, “in the short-term, I am going to check my patients for atherosclerosis before instituting testosterone therapy. We still need a definitive study to show whether or not heart attacks are increased by supplemental testosterone, but advancing atherosclerosis is not a good thing. These results should make us more cautious about whom we treat and what doses we use.”

Hi I just turned 50 , and for the past 6 years I have been going through depression , low energy , insomnia , but my sex drive was not bad, I really did not know what it was , so last month my family doctor asked that I test my testosterone and the result was 7.2 noml/l (208 ngdl. So I was prescribed 2.5g 1% androgel, after two weeks I did not feel a difference , on the box it says that the recommended dose is 5g 1% , so my doctor prescribed the 5g 1 % , its now a week since I started the 5 g ( all together three weeks since I started androgel ) & now I feel great, my mood and energy level is way better, I never had an issue with my libdo , so no difference there. I asked my family doctor to refer me to an endocrinologist, just to get a second opinion but that appointment will happen only after 5 months, huge wait time. I am not worried about all that is said about side effects like prostate cancer , heart issues etc because otherwise I am very healthy and have family history of cancers and heart issues , but what worries me is , will my testes & p.glands stop producing Testosterone because of this external replacement? Something I would not want to happen at 50, because probably with exercise & diet I could try boosting by my T.Level naturally. More over will I become sterile , I have a young wife and we may have more kids. Also the gel application is very uncomfortable since I have young kids in the house I have o take extreme caution. Last was it worth starting TRT without finding out the level of my free testosterone. appreciate your advise. Thanks.

Glad to be heard. I have been using 10 times the recommended prescription dose of injectable test over the course of 6 years. Yes, 10 times the recommended dose. I use 250 at the lowest and 1000 mgs a week and sometimes 1200 mgs weekly. I am 50 years old. I look better than 90% of the 25 year olds I see in the gym. I have had zero issues. Acne a little , testicle shrinkage maybe 15%. No big deal. My sex drive is on fire. I bench pressed 340 pound today. I weigh 195 pounds and lean and muscles defined and hard as a rock. Doctors in the USA have no clue what they are doing. They read literature and have no experience or facts about test. They prescribe 50 mgs a week. Way short of what we as men need. Everyone is different, but 250mgs weekly is what we need typically. Injectable is the way to go. Gels are a weak joke. My doctor basically told me he was scared to prescribe more than 50 mgs weekly for fear of being sued if something went wrong. I found my own source and have been on top of the world for 6 years. Father died of prostate cancer. Mine prostate is fine. Prostate cancer from test is another example of ignorance in medical field. I am living proof that one can inject 10 times the recommended rate for the better part of a decade with no probs. I do hope the medical field catches up with the times and stops relying on archaic info.
But when a premenopausal woman’s testosterone levels are too high, it can lead to polycystic ovary syndrome (PCOS), a condition that increases the risk of irregular or absent menstrual cycles, infertility, excess hair growth, skin problems, and miscarriage. High levels of testosterone in women, whether caused by PCOS or by another condition, can cause serious health conditions such as insulin resistance, diabetes, high cholesterol, high blood pressure, and heart disease. (12)

I’ve been on testosterone replacement for over 3 years and at first I did the shots and my mood swings were ridiculous, my skin broke out on my chest and shoulders, and my henatocrit went to 55%. I finally got fed up with doing shots every two weeks and switched to Gel and it’s been so much better. It actually increases my levels which is rare for most men. I do 12.5 mg, three pumps a day, and this keeps My level between 500 and 600. My hematocrit is 48.5 and no mood swings.
Testosterone is only one of many factors that influence aggression and the effects of previous experience and environmental stimuli have been found to correlate more strongly. A few studies indicate that the testosterone derivative estradiol (one form of estrogen) might play an important role in male aggression.[66][71][72][73] Studies have also found that testosterone facilitates aggression by modulating vasopressin receptors in the hypothalamus.[74]

This particular product contains the largest dose of D-Aspartic Acid making it a highly effective muscle and strength builder. In addition, TestoFuel contains optimum doses the proven ingredients of Vitamin D, Oyster Extract, Zinc, Magnesium, Vitamin B6, Vitamin K2, Fenugreek and Siberian Ginseng. And you won’t get filler ingredients with this one like you do with many others.

Testosterone causes prostate cancer. Since the 1940s, it was commonly believed in the medical field that high testosterone levels were the cause of prostate cancer in men. Doctors reached this conclusion because two scientists in 1941 noticed that prostate cancer regressed in a patient after they castrated him and his T levels subsequently declined. This conclusion was based on the results from a single patient!
Likewise, the amino acids in a protein-rich diet play a big role in both testosterone and muscle growth. As Chris Lockwood, Ph.D., explains, "When combined with training, which increases the sensitivity of androgen receptors, and the consumption of essential amino acids necessary to support protein synthesis, the effects of testosterone on muscle and performance is significantly amplified."[3,4]
Men who take Testosterone report a surge in their sex drive and frequency of sex. They are better able to work out, build muscle mass and strength. The fat around their belly melts away as they lose weight and trim their waists. Men who enroll in a comprehensive Testosterone Replacement program which includes diet, nutrition and exercise - feel better, sleep better and look better. They have their edge back along with a restored enthusiasm for daily living, pursuing relationships and living life.
In effect, older men with low testosterone and age-associated memory impairment (AAMI) did not benefit from short-term treatment with testosterone, as reported in the current issue of the Journal of the American Medical Association (JAMA),1 by Susan M. Resnick, PhD, a senior investigator at the National Institute on Aging in Baltimore, Maryland, and colleagues.
In many of the studies we found, those who saw the most improvement in health, testosterone, or muscle gain were those with existing nutrient or vitamin deficiencies. This means that some gains may be due more to dietary changes and generally restoring nutrient and vitamin levels than any one magic ingredient, but also that making sure your diet includes healthy amounts of nutrients should be your first step.

Binge drinking on the other hand does impact Testosterone levels – especially on a short term basis. Two studies (22 & 23) show that large acute quantities of alcohol consumption in a short period led to decreases in Testosterone levels by a whooping 20-23% after 24hours! Note however this is drinking to extreme excess! Likewise, chronic alcohol abuse is known to reduce testosterone more notably (as seen in alcoholics).

Testosterone is significantly correlated with aggression and competitive behaviour and is directly facilitated by the latter. There are two theories on the role of testosterone in aggression and competition.[81] The first one is the challenge hypothesis which states that testosterone would increase during puberty thus facilitating reproductive and competitive behaviour which would include aggression.[81] Thus it is the challenge of competition among males of the species that facilitates aggression and violence.[81] Studies conducted have found direct correlation between testosterone and dominance especially among the most violent criminals in prison who had the highest testosterone levels.[81] The same research also found fathers (those outside competitive environments) had the lowest testosterone levels compared to other males.[81]
Everytime you add Testosterone to your system, be it naturally through producing in the testis, injected, oral, or dermal you will receive a spike in your blood levels. Estrogen is mainly created in men by an action of an enzyme called Aromatase. Aromatase floats around and binds to Testosterone and converts it to Estrogen. When you spike your T your E will follow in this way. The obvious and detrimental effects to many of the already estrogen dominant hypogonadal men will be inappropriate over stimulation of the estrogen receptors in the body. Gynecomastia, fluid retention, weight gain, brain fog, erratic emotions, depression, ect. Higher levels of Estrogen cause SHBG to be created. SHBG binds to Testosterone and transports it to the liver for disposal. On top of this Estrogen can bind to your androgen receptors causing Testosterone to float around with no where to go. If you are taking shots or gel or cream and feel little to no effect even though it’s technically raised your T blood ranges, you now have an multiple answers for why you little to nothing or feel even worse. This has been known for years that you must be prepared to control Estrogen. An Aromatase Inhibitor (AI) or anti estrogen medication (Clomiphene, Tamoxifen) is needed to stop the estrogen from getting out of control. By taking an Aromatase inhibitor and monitoring your E2 levels you can easily control Estrogen, Aromatase, and SHBG from getting out of hand and free up those blocked androgen receptors so you can now reap the benefits of elevating T to a healthy level. If your Doctor is not testing your E2(aka Estrogen, Estradiol) levels before and during talks and administration of TRT or will never prescribe an AI then you shouldn’t be following his advice at all and will be harmed by Testosterone usage. This may sound complicated but in the end it’s simple. Elevate Testosterone. Control Estrogen. Only two medications needed. Don’t settle.
Late onset hypogonadism reflects a particular pathophysiology and it may not be appropriate to extrapolate results from studies concerning the effects of testosterone in treating hypogonadism of other etiology to aging males. For this reason, the age of men treated in clinical trials is certainly relevant. Other important factors include patient comorbidities and the preparation and route of testosterone replacement used in the study, which can affect the production of estrogen and dihydrotestosterone, testosterone’s active metabolites
I started with the shots. Wowee! the effect was like night and day. For two years I was like a teenager. But then I noticed some REALLY risky (Health) behavior ( and memory gaps) and bad decisions with long-term implications(i.e judgement). So I tried stopping TRT (four years on the pumps),within four months, mood swings like menopause: snarly with co workers (not good in nursing), grumpy with everyone, switch from jovial to downcast in an instant (I’m male). Had to go back on and do an 18 mth taper, coupled with exercise. No TRT, makes exercise SO hard to do. Muscles seem so much more aware of stiffness.
The other component of that study is that the subjects ate much less saturated fat. Saturated fats are common in meat, butter, and coconut products, and they’re crucial for your body to function. Saturated fats keep the integrity of your cell membranes, and if you limit carbs and/or do Bulletproof Intermittent Fasting, saturated fats become a phenomenal source of energy for your brain.
I’m afraid I have no super cool “secrets” to share and there are no easy shortcuts to increasing your T. If you were expecting some magical potion or supplement or weird body hack that will instantly and naturally increase your T levels, what follows is bound to disappoint. Despite what some companies or websites might tell you, there’s no single thing that will boost your testosterone naturally for the long term.
In a placebo-controlled study, 27 Division II football players received either a placebo or a ZMA supplement for a total of seven weeks during their scheduled spring practice. At the end of the seven weeks, the players taking the ZMA supplement had a 30 percent increase in testosterone, while the placebo group had a 10 percent decrease. The ZMA group also saw an 11.6 percent increase in strength, compared to only 4.6 percent in the placebo group.[7]
I’m telling you all of this because no matter who you are, keeping your testosterone levels balanced is more important now than ever before. Modern living has not been kind to our hormones. In American men, serum testosterone levels have declined by about 1% each year for the past 30 years [5], and you can make a few educated guesses about why. Hormone-disrupting chemicals are more prevalent than ever before, physical activity is less and less common, veganism is popular (I was a raw vegan for a while), and many doctors insist on pushing a low-fat, low-cholesterol diet for health (by the way, the concept of a low-fat diet began in the mid-70s, shortly before the nationwide testosterone decline. It could be a coincidence, but I doubt it).
I’m afraid I have no super cool “secrets” to share and there are no easy shortcuts to increasing your T. If you were expecting some magical potion or supplement or weird body hack that will instantly and naturally increase your T levels, what follows is bound to disappoint. Despite what some companies or websites might tell you, there’s no single thing that will boost your testosterone naturally for the long term.
Benefits: Ashwagandha a wonderful herb originating from India is also called the Indian Ginseng because of it’s regard as a powerful aphrodisiac. Ashwagandha roots when consumed it increases sexual powers. These sexual powers include maintaining a stronger erection, longevity, enhanced sexual feeling. It also enhances fertility by increasing sperm count and quality. Ashwaganda works by reducing prolactin and neutralizing free radicals which both leads to increased testosterone levels.

One study looking at alcohol consumption found that increasing alcohol consumption led to a higher level of free & total testosterone compared to a non-drinking control group (20). Drinking did however lower SHBG testosterone levels, though this type of testosterone is bound to a protein meaning our bodies cannot use it to build muscle or increase our mood.
Testosterone may improve cognitive ability. Not only have studies shown that there is a link between testosterone levels and Alzheimer’s, they’ve also shown a link between T levels and overall cognitive ability, particularly in older men. One such study performed by Dutch researchers found a direct linear relationship between T levels and cognitive function, while other studies have found a linear relationship between memory loss and T levels. Because of these correlations, many researchers believe testosterone plays a role in preventing brain tissue decay in elderly men. The hormone’s connection to cognition explains why some of the symptoms of low T in men are memory loss, trouble concentrating, and “fogginess.”
“I'll be totally honest I tried a different product, and I wasn't happy with the different product and so I've been without any supplement for some time now, and I can really feel the difference. And I had fantastic results with the Andro400 Max. Probably lost 35 pounds. And more impressive than that was the inches I lost off of my belly and my waist. The increased energy is fantastic, and the mood enhancement is really good. I'm very impressed with it. You guys are considerably cheaper than the other brand. I get 2 bottles a month from you guys and that's even $15 less than the GNC product.”

The T Trials are a set of seven clinical trials hosted at 12 sites around the country. In the aggregate, 790 men aged 65 or older with low levels of testosterone and associated symptoms participated. First, participants had to qualify for one of the main three trials: the Sexual Function Trial, the Physical Function Trial, or the Vitality Trial. Then, participants could participate in any of the other trials for which they qualified.
These berries are known to improve your overall stamina and mood. But that’s not all, they also keep temperatures in the scrotum at the optimum level. The scrotum contains the testes which produce sperm. Higher temperatures tend to hamper the sperm production and decrease the volume that is released in a man’s ejaculate. They also promote sperm production by improving blood circulation and protecting against free radical damage.

A recent study compared total and bioavailable testosterone levels with inflammatory cytokines in men aged 65 and over. There was an inverse correlation with the pro-inflammatory soluble interleukin-6 receptor, but no association with interleukin-6 (IL-6), highly sensitive CRP (hsCRP), tumor necrosis factor-α (TNF-α) or interleukin-1β (IL-1β (Maggio et al 2006). Another trial found that young men with idiopathic hypogonadotrophic hypogonadism had higher levels of proinflammatory factors interleukin-2 (IL-2), interleukin-4 (IL-4), complement C3c and total immunoglobulin in comparison to controls (Yesilova et al 2000). Testosterone treatment in a group of hypogonadal men, mostly with known coronary artery disease, induced anti-inflammatory changes in the cytokine profile of reduced IL-1β and TNF-α and increased IL-10 (Malkin, Pugh, Jones et al 2004).

^ Mehta PH, Jones AC, Josephs RA (Jun 2008). "The social endocrinology of dominance: basal testosterone predicts cortisol changes and behavior following victory and defeat" (PDF). Journal of Personality and Social Psychology. 94 (6): 1078–93. CiteSeerX 10.1.1.336.2502. doi:10.1037/0022-3514.94.6.1078. PMID 18505319. Archived from the original (PDF) on April 19, 2009.


Testosterone is well known as the most critical anabolic, not to mention androgenic, hormone in the body. It’s what separates the men from the boys. Healthy testosterone levels are critical for guys who want to build muscle mass, boost strength, and drop body fat. Testosterone also supports sexual health and gives a competitive edge. It’s truly the alpha hormone.
For this reason, after the 2008 financial market meltdown, some commentators put the blame for the crash on the male-dominated profession, arguing that men take too many risks, and the economy would do better and be more stable if it was run by women. Of course, risk-taking does come with inherent risk, but it has also been responsible for the lion’s share of society’s progress and innovation since the dawn of time. Financial markets would likely not exist – period – without testosterone-driven risk-taking.
The amount of testosterone synthesized is regulated by the hypothalamic–pituitary–testicular axis (see figure to the right).[133] When testosterone levels are low, gonadotropin-releasing hormone (GnRH) is released by the hypothalamus, which in turn stimulates the pituitary gland to release FSH and LH. These latter two hormones stimulate the testis to synthesize testosterone. Finally, increasing levels of testosterone through a negative feedback loop act on the hypothalamus and pituitary to inhibit the release of GnRH and FSH/LH, respectively.

In the hepatic 17-ketosteroid pathway of testosterone metabolism, testosterone is converted in the liver by 5α-reductase and 5β-reductase into 5α-DHT and the inactive 5β-DHT, respectively.[1][155] Then, 5α-DHT and 5β-DHT are converted by 3α-HSD into 3α-androstanediol and 3α-etiocholanediol, respectively.[1][155] Subsequently, 3α-androstanediol and 3α-etiocholanediol are converted by 17β-HSD into androsterone and etiocholanolone, which is followed by their conjugation and excretion.[1][155] 3β-Androstanediol and 3β-etiocholanediol can also be formed in this pathway when 5α-DHT and 5β-DHT are acted upon by 3β-HSD instead of 3α-HSD, respectively, and they can then be transformed into epiandrosterone and epietiocholanolone, respectively.[157][158] A small portion of approximately 3% of testosterone is reversibly converted in the liver into androstenedione by 17β-HSD.[156]

Testosterone levels peak by early adulthood and drop as you age—about 1% to 2% a year beginning in the 40s. As men reach their 50s and beyond, this may lead to signs and symptoms, such as impotence or changes in sexual desire, depression or anxiety, reduced muscle mass, less energy, weight gain, anemia, and hot flashes. While falling testosterone levels are a normal part of aging, certain conditions can hasten the decline. These include:
Testosterone plays a role in certain behaviors, including aggression and dominance. It also helps to spark competitiveness and boost self-esteem. Just as sexual activity can affect testosterone levels, taking part in competitive activities can cause a man’s testosterone levels to rise or fall. Low testosterone may result in a loss of confidence and lack of motivation. It can also lower a man’s ability to concentrate or cause feelings of sadness. Low testosterone can cause sleep disturbances and lack of energy.
“Life for the winner is more glorious. It enters the next round of competition with already elevated testosterone levels, and this androgenic priming gives it an edge that increases its chances of winning yet again. Through this process an animal can be drawn into a positive-feedback loop, in which victory leads to raised testosterone levels which in turn leads to further victory.”
A: A troche is a small lozenge designed to dissolve in the mouth. Testosterone is available in troche or buccal form. If you are referring to testosterone troche, this product is generally used to treat conditions in men that result from a lack of natural testosterone. Testosterone is vital to maintaining an active and healthy male sex drive. Testosterone deficiency can cause erectile dysfunction. Studies suggest that if erectile dysfunction is associated with a low testosterone level, it can often be treated with prescription testosterone pills. Based on your complete medical history and blood levels of testosterone, your doctor can determine the best treatment option to meet your needs. For more information, please consult with your health care provider and visit //www.everydayhealth.com/drugs/testosterone. Michelle McDermott, PharmD
Testosterone is the primary male sex hormone and an anabolic steroid. In male humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.[2] In addition, testosterone is involved in health and well-being,[3] and the prevention of osteoporosis.[4] Insufficient levels of testosterone in men may lead to abnormalities including frailty and bone loss.
Eggs often come up in reproductive health discussion. This time we’re talking about dietary eggs, as in omelets, and the role they play in boosting testosterone. The hormone boost from eggs comes primarily from the yolks, which are rich in dietary cholesterol, mono- and saturated fats—nutrients once demonized by health experts that have since proven to positively influence waistlines and hormone-health.
When I first started TRT, my physician prescribed a cream that you rub into your skin. The cream version of TRT is not too convenient, because if someone touches you while you have the cream on, the testosterone can rub off on him/her. This can be really bad around kids or pregnant women. If you’re sleeping next to someone, the cream can get on the sheets and transfer over that way, too. The cream can be annoying, but it works. There’s also a gel version called AndroGel; I skipped it because it doesn’t absorb as well as the cream does.
If you are serious about losing weight, you have got to strictly limit the amount of processed sugar in your diet, as evidence is mounting that excess sugar, and fructose in particular, is the primary driving factor in the obesity epidemic. So cutting soda from your diet is essential, as is limiting fructose found in processed foods, fruit juice, excessive fruit and so-called "healthy" sweeteners like agave.
Testosterone plays a role in certain behaviors, including aggression and dominance. It also helps to spark competitiveness and boost self-esteem. Just as sexual activity can affect testosterone levels, taking part in competitive activities can cause a man’s testosterone levels to rise or fall. Low testosterone may result in a loss of confidence and lack of motivation. It can also lower a man’s ability to concentrate or cause feelings of sadness. Low testosterone can cause sleep disturbances and lack of energy.

Overall, it seems that both estrogen and testosterone are important for normal bone growth and maintenance. Deficiency or failure of action of the sex hormones is associated with osteoporosis and minimal trauma fractures. Estrogen in males is produced via metabolism of testosterone by aromatase and it is therefore important that androgens used for the treatment of hypogonadism be amenable to the action of aromatase to yield maximal positive effects on bone. There is data showing that testosterone treatment increases bone mineral density in aging males but that these benefits are confined to hypogonadal men. The magnitude of this improvement is greater in the spine than in the hip and further studies are warranted to confirm or refute any differential effects of testosterone at these important sites. Improvements seen in randomized controlled trials to date may underestimate true positive effects due to relatively short duration and/or baseline characteristics of the patients involved. There is no data as yet to confirm that the improvement in bone density with testosterone treatment reduces fractures in men and this is an important area for future study.
Our Testosterone Therapy Doctors, Urologists and Endocrine Physicians have successfully treated over 25,000 patients. Our Testosterone Therapy Centers utilize the most progressive hormone treatment protocols backed up with training from the Mayo Clinic®, Cenegenics® Clinic and Cleveland Clinic®. Fill out the Quick Info Request Form to speak to a Testosterone Specialist and to receive the best pricing for Testosterone Injections and other hormone replacement medications like HCG and HGH Human Growth Hormone.
I’m 56 and 5 years ago dropped to 270 with all the side effects listed for low test. After trying shots and not liking the roller coaster effect, I switched to gels. Androgel and Axiron had too low a dosage and far too messy. They need to not call them gels but liquids. If it pours like water it’s a liquid. My doctor recommended a compounding Pharmacy that made a cream and it was perfect. It had a click dispenser that looked like a deoderant that would pre-measure the dosage and I could rub it on my arms and shoulders or on my neck, really anywhere not covered in hair but the thinner the skin the better. It dried instantly so I could get dressed in a couple minutes. My totals never got out of the 400’s until I started the 150mg daily cream dosage, then they hovered around 700. The down side was Insurance didn’t cover it and I had to pay $50 a month vs free shots from the doctors office or $10 for the so-called gels. Bad news is it has now doubled in price due to new Federal production regs on compounding Pharms. Now, I am going back on the shots which I now have to buy the vile for $125 for 10 doses and have to take it to my doctor to administer it every 2wks while I am looking into bioidentical pellet implants.
Ashwagandha is sometimes included in testosterone supplements because of the hypothesis that it improves fertility. However, we couldn’t find sufficient evidence to support this claim (at best, one study found that ashwagandha might improve cardiorespiratory endurance). WebMD advocates caution when taking this herb, as it may interact with immunosuppressants, sedative medications, and thyroid hormone medications.
When you're under a lot of stress, your body releases high levels of the stress hormone cortisol. This hormone actually blocks the effects of testosterone,6 presumably because, from a biological standpoint, testosterone-associated behaviors (mating, competing, aggression) may have lowered your chances of survival in an emergency (hence, the "fight or flight" response is dominant, courtesy of cortisol).
Thanks for reaching out buddy. Sorry to hear about your situation. First off, what I’d suggest is to forget about creams, they are a waste of money unless you are trying to moisturize your body – which I guess you’re not. As for estrogen blockers, the same goes here – but testosterone boosters on the other hand, they work with your body instead of against it to give you everything your body is missing – it sounds like it’s the missing piece to your puzzle. Bear in mind Graham, you’ll need to pay close attention to your diet – aim to cut down on refined carbohydrates and simple sugars – these are terrible for testosterone production and weight gain. If you drink more water, eat a balanced diet, and exercise occasionally while supplementing with testofuel.com you’ll soon be back on track. All the best!
The bones and the brain are two important tissues in humans where the primary effect of testosterone is by way of aromatization to estradiol. In the bones, estradiol accelerates ossification of cartilage into bone, leading to closure of the epiphyses and conclusion of growth. In the central nervous system, testosterone is aromatized to estradiol. Estradiol rather than testosterone serves as the most important feedback signal to the hypothalamus (especially affecting LH secretion).[119] In many mammals, prenatal or perinatal "masculinization" of the sexually dimorphic areas of the brain by estradiol derived from testosterone programs later male sexual behavior.[120]
“The Andro 400 has been a plus to my daily requirements of energy, stamina and weight loss. I have seen a noticeable reduction in my waistline from a 40" waist to a 37" waist. I am 6'6" and weighed 252, I now weigh 238 and feel much better. Without too much information, my sex drive and performance has been positively enhanced with greater sensitivity and stamina during those intimate times with my wife. Greater sensation, pleasure and results are evident.”
When females have a higher baseline level of testosterone, they have higher increases in sexual arousal levels but smaller increases in testosterone, indicating a ceiling effect on testosterone levels in females. Sexual thoughts also change the level of testosterone but not level of cortisol in the female body, and hormonal contraceptives may affect the variation in testosterone response to sexual thoughts.[51]
Although some men believe that taking testosterone medications may help them feel younger and more vigorous as they age, few rigorous studies have examined testosterone therapy in men who have healthy testosterone levels. And some small studies have revealed mixed results. For example, in one study healthy men who took testosterone medications increased muscle mass but didn't gain strength.
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