Hair Loss Treatments
Hair Loss & Alopecia Information, Support, and Treatments
Page 1 of 8 123 ... LastLast
Results 1 to 10 of 76
  1. #1
    Senior Member
    Join Date
    May 2010
    Posts
    2,200

    Propecia decreases bioavailable testosterone!

    Some months ago, I read a study which showed that finasteride decreased the level of free testosterone in all the subjects! I've used a couple of hours now, trying to find it again - but without any result. However, I did come across another study, and it shows exactly the same thing! Take a look at page 6!

    DHT has greater affinity for SHBG, and finasteride decreases the level of DHT by 60 - 70%. The hormone which is next in line is testosterone, and that's probably the reason.

  2. #2
    Senior Member
    Join Date
    Apr 2011
    Posts
    1,290

    Re: Propecia decreases bioavailable testosterone!

    I'd like to see what their numbers went to (or if they changed) by getting some extra Vitamin D in their diet. It's been shown to raise free-t

    http://www.ncbi.nlm.nih.gov/pubmed/20050857

  3. #3
    Senior Member
    Join Date
    May 2010
    Posts
    2,200

    Re: Propecia decreases bioavailable testosterone!

    It wouldn't affect the level of free testosterone, if SHBG is the reason. At least I believe so. It's a different game when DHT is heavily suppressed.

  4. #4
    Senior Member
    Join Date
    May 2010
    Posts
    2,200

    Re: Propecia decreases bioavailable testosterone!

    Say if vitamin D increases the testosterone production, the estrogen level will increase as well, maybe drastically when you're using a reductase inhibitor. Excessive estrogen is linked to increased SHBG level, so actually it could make it a lot worse.

  5. #5
    Senior Member
    Join Date
    May 2010
    Posts
    2,200

    Re: Propecia decreases bioavailable testosterone!

    Thanks for moving the topic!

  6. #6
    Senior Member
    Join Date
    May 2010
    Posts
    2,200

    Re: Propecia decreases bioavailable testosterone!

    I would like to have some discussion on this topic, but no one seems to be interested. This is something which concerns all Propecia users!!

    FYI, a reduction in the free testosterone level is a lot worse than a reduction in the total testosterone level. If a doctor reveals a low, borderline testosterone level, it's the free testosterone level which decides whether you get treatment or not!

    MERCK has failed to inform you about this!

  7. #7

    Re: Propecia decreases bioavailable testosterone!

    How is this news to anyone? Just spend 5 minutes at propeciahelp.com

  8. #8
    Senior Member
    Join Date
    May 2010
    Posts
    2,200

    Re: Propecia decreases bioavailable testosterone!

    What's new, is that this is something which concerns all men and women who take Propecia, not just those with side effects and PFS. Besides, this is different. This is a study which shows that Propecia decreases free testosterone - in all cases!

  9. #9
    Senior Member
    Join Date
    Nov 2010
    Posts
    978

    Re: Propecia decreases bioavailable testosterone!

    Crap, i'm surprised i've never seen this.. Thats actually a little troubling. I have bloods from pre-fin, so i'm going to schedule another test to check for bioavailable T.

    Thanks for posting this, I think it's yet another reason for people to take before/after bloods.

    I didn't read the entire study, but do these levels return to normal after discontinuing? At least in these subjects?

  10. #10
    Senior Member
    Join Date
    Jan 2009
    Posts
    322

    Re: Propecia decreases bioavailable testosterone!

    http://www.elsevier.es/es/revistas/endo ... itaminosis
    D vitamin deficiencies in high school students, more common than we think...

Similar Threads

  1. Nizoral Decreases Libido?
    By howcanthisbe in forum Dealing with Side Effects
    Replies: 13
    Last Post: March 17th, 2012, 03:05 PM
  2. Saw Palmetto decreases the sebum?
    By chessmaniac12 in forum Antiandrogens - Propecia, Dutasteride, etc.
    Replies: 0
    Last Post: December 28th, 2011, 05:39 AM
  3. increases T and decreases DHT and estrogen
    By hairrific in forum Alternative Treatments
    Replies: 6
    Last Post: June 26th, 2010, 11:57 AM
  4. Propecia Increasing Testosterone???????
    By nohairnodandruff in forum Antiandrogens - Propecia, Dutasteride, etc.
    Replies: 6
    Last Post: August 21st, 2005, 09:21 PM
  5. Testosterone too low for propecia
    By steve b in forum Men's General Hair Loss Discussions
    Replies: 5
    Last Post: June 24th, 2005, 12:05 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •