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  1. #1
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    Cool Cannabis and Testosterone Levels

    "Myth: Marijuana causes sterility and lowers testosterone
    Government experts also concede that pot has no permanent effect on the male or female reproductive systems.(14) A few studies have suggested that heavy marijuana use may have a reversible, suppressive effect on male testicular function.(15) A recent study by Dr. Robert Block has refuted earlier research suggesting that pot lowers testosterone or other sex hormones in men or women.(16) In contrast, heavy alcohol drinking is known to lower testosterone levels and cause impotence. A couple of lab studies indicated that very heavy marijuana smoking might lower sperm counts. However, surveys of chronic smokers have turned up no indication of infertility or other abnormalities.

    Less is known about the effects of cannabis on human females. Some animal studies suggest that pot might temporarily lower fertility or increase the risk of fetal loss, but this evidence is of dubious relevance to humans.(1) One human study suggested that pot may mildly disrupt ovulation. It is possible that adolescents are peculiarly vulnerable to hormonal disruptions from pot. However, not a single case of impaired fertility has ever been observed in humans of either sex."

    http://paranoia.lycaeum.org/marijuan...gy.html#myth13


    "HE FACTS

    There is no evidence that marijuana impairs male reproductive functioning.

    The Jamaican and Costa Rican field studies detected no differences in hormone levels between marijuana users and non-users.

    In epidemiological surveys of marijuana users, no problems with fertility have emerged as important.

    In 1974, researchers reported diminished testosterone, reduced sexual function and abnormal sperm cells in males identified as chronic marijuana users. 34 In a laboratory study, the same researchers reported an acute decrease in testosterone, but no chronic effect after nine weeks of smoking; they did not evaluate sperm volume or quality. 35 In other laboratory studies, researchers have been generally unable to replicate these findings, 36 although by administering very high THC doses - up to 20 cigarettes per day for 30 days - one study found a slight decrease in sperm concentrations. 37 In all studies, test results remained within normal ranges and probably would not have affected actual fertility. "

    http://www.erowid.org/plants/cannabi...is_myth6.shtml
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  2. #2
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    *Marijuana INCREASES Testosterone*
    The active ingredient in Marijuana, THC(Delta9-tetrahydrocannabinol ), increases testosterone in mice.

    --------------------------------------------------------------------------------
    Science 31 July 1981:
    Vol. 213. no. 4507, pp. 581 - 583
    DOI: 10.1126/science.6264607
    Prev | Table of Contents | Next

    Articles
    Science, Vol 213, Issue 4507, 581-583
    Copyright ? 1981 by American Association for the Advancement of Science


    --------------------------------------------------------------------------------



    Delta9-tetrahydrocannabinol increase plasma testosterone concentrations in mice

    S Dalterio, A Bartke, and D Mayfield

    Oral administration of delta 9-tetrahydrocannabinol had a biphasic effect on plasma testosterone concentrations in male mice, causing rapid sustained increases at low doses and subsequent decreases at higher doses. In hypophysectomized and intact mice receiving gonadotropins (human chorionic gonadotropin), treatment with delta 9-tetrahydrocannabinol maintained higher plasma testosterone concentrations. Thus, this cannabinoid may interact with gonadotropin and directly influence testicular steroidogenesis in vivo.




    --------------------------------------------------------------------------------

    THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
    {{Delta}}9-Tetrahydrocannabinol increases nerve growth factor production by prostate PC-3 cells: Involvement of CB1 cannabinoid receptor and Raf-1.
    L. Velasco, L. Ruiz, M. G. S?nchez, and I. D?az-Laviada (2001)
    FEBS J. 268, 531-535


    Cannabinoids in male mice: effects on fertility and spermatogenesis.
    S Dalterio, F Badr, A Bartke, and D Mayfield (1982)
    Science 216, 315-316

    http://www.sciencemag.org/cgi/conten...t/213/4507/581

  3. #3
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    cool. any studies about its effect on estrogen levels?

  4. #4
    Registered User D00fy's Avatar
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    bump, we need more studies to settle this myth once and for all!!!!!!!!!!!
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    Registered User Mr._X's Avatar
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    If it increased testosterone wouldn't we be seeing more stoners in the gym??
    Workout Journal: http://forum.bodybuilding.com/showthread.php?t=136492221
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  6. #6
    Registered User D00fy's Avatar
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    Thats if they overcome the lazyiness, and get off the couch and turn the xbox360 off.


    Originally Posted by Mr._X View Post
    If it increased testosterone wouldn't we be seeing more stoners in the gym??
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    hey, not bad Ross
    Realize that anyone with an affiliation to a supplement company in their signature has ulterior motives when making recommendations. They're primarily concerned with pushing their products. Not your safety or what's best for you.

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    Originally Posted by Mr._X View Post
    If it increased testosterone wouldn't we be seeing more stoners in the gym??
    if it spikes estrogen levels too, which is why i asked about studies relating it to estrogen, then its worthless

  9. #9
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    Originally Posted by Mr._X View Post
    If it increased testosterone wouldn't we be seeing more stoners in the gym??
    I'm in there... 5 days a week...
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  10. #10
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    Originally Posted by headinahole View Post
    I'm in there... 5 days a week...
    Ditto!!

  11. #11
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    Originally Posted by Rodzilla View Post
    hey, not bad Ross
    I love my Mary

  12. #12
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    http://forum.bodybuilding.com/showthread.php?p=10459580

    "Effects of chronic marijuana use on testosterone, luteinizing hormone, follicle stimulating hormone, prolactin and cortisol in men and women.

    Block RI, Farinpour R, Schlechte JA.

    Department of Anesthesia, College of Medicine, University of Iowa, Iowa City 52242.

    To investigate possible effects of chronic marijuana use on reproductive and stress hormones, we assayed testosterone, luteinizing hormone, follicle stimulating hormone, prolactin, and cortisol in 93 men and 56 women with a mean (+/- S.E.) age of 23.5 +/- 0.4 years. Hormone values were compared among groups of subjects stratified according to frequency of marijuana use (frequent, moderate and infrequent; N = 27, 18, and 30, respectively) and non-using controls (N = 74). Chronic marijuana use showed no significant effect on hormone concentrations in either men or women.


    Serum testosterone concentrations in cannabis and opiate users

    [Article in German]

    Friedrich G, Nepita W, Andre T.

    Institut fur Rechtsmedizin, Universitat Freiburg.

    The object of this study was to establish possible influences of long-term cannabis usage on plasma testosterone levels. The plasma testosterone levels of 66 male Pakistani who for years had smoked cannabis daily or drank cannabis regularly where measured after chronic and acute intake of the drug and compared with a material of 41 normal controls, i.e. persons who did not use cannabis. An evaluation of the results showed that there were no significant differences between the two groups. No influence of long-term cannabis usage on plasma testosterone levels was found. Furthermore we wished to find out wether long-term heroin abuse showed an effect on plasma testosterone levels. The concentrations of testosterone in the plasma of 102 heroin addicts assigned to a Methadone Program were measured and compared with the values of 29 male healthy students as controls. Plasma testosterone levels were found to be significantly decreased in heroin addicts as compared to controls."
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  13. #13
    Registered User D00fy's Avatar
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    http://www.scribd.com/doc/2440695/Ma...d-Bodybuilding


    “Since marijuana has no estrogenic activity, it isn’t likely to cause this condition”
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    Smile

    Originally Posted by D00fy View Post
    Thats if they overcome the lazyiness, and get off the couch and turn the xbox360 off.
    actually there are more "stoners" if you want to call them that in the gym than you think. cannabis effects everyone differently and each different strain effects people differently as well.

    you are perpetuating stereotypes that are just not true.

    i am a perfect example. i cycle 50-100 miles per day 5 days a week and on my other two days i ride 20 miles minimum (just too and from work). i also lift weights 5 days per week. before and during every ride/workout i vaporize some grand daddy purple. it actually acts as a "performance enhancer" for me. it helps me be able to focus my concentration allowing me more endurance, further stretching, and heavier weights with more reps...

    just thought you should know..

    PS an example of how people are effected differently :
    for a lot of people an indica heavy strain like the grand daddy "puts them to sleep" but i personally can't blaze it about 2-3 hours before i go to bed.. acts as more of a stimulant for me..

    on the other hand if i drink a few cups of coffee i can pass right out!!

    just letting you know.. the human brain is quite varied.. we all "know some dude who wouldn't get off his couch for months!" and we attribute that to a "general human" smoking "general marijuana"

    there is no such thing as a "general human" or "general marijuana" there are plenty of different varieties of each!!

    plenty of pro bodybuilders/pro trainers/athletes use cannabis. this might work negatively or well for any of them.. just like drinking coffee or energy drinks or steroids or beer or heroine or whatever..

    and remember.. there are examples for just about any side of any argument. "i knew this asian and he was really smart and studied all the time" that's great man.. i knew this asian who never read a book in his life and he was a thug drug dealer until he died on the street.

    "there was this guy who went to technical school and ended up a jobless bum for the rest of his life" that's great! i know a guy with a GED who is a self starter and now he's rich!

    anyway.. there's the long explanation for you.. by the way i'm not medicated yet.. maybe if i was the post wouldn't have been such a long rant.. just another ASSumption. time to fire it up.

  15. #15
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    I smoke every single day, which is a bad habit and I need to cut back. I still workout 4 days aweek and do ATG squats, deadlifts all of it.....

    Anyway...

    The only real issue I have is that I find it hard to get to bed on time so that I get 8 hours of sleep. Munchies are mental and an excuse, uummm I love my Xbox 360.....ummm I hate *******s who say 420, or have ghey names like "Stoner Knight 420" = *******s


    no side effects other than being tired from not getting enough sleep....



    more studies indeed....
    (っ◕‿◕)っ

  16. #16
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    Originally Posted by TheSupremeBeing View Post
    *Marijuana INCREASES Testosterone*
    The active ingredient in Marijuana, THC(Delta9-tetrahydrocannabinol ), increases testosterone in mice.
    yeah buddy! stoned mice are alpha mice

    Originally Posted by Mr._X View Post
    If it increased testosterone wouldn't we be seeing more stoners in the gym??
    I actually see quite a lot. then again, I am in CA.

  17. #17
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    corpsecannibal = Ross ?!?!?!?!
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