I have recently read the site of a man who has written a book questioning the validity of Doctors who advocate drinking high volumes of water and eating a high fiber diet (or supplementing with mass quantities of psyllium or something similar). As I find his argument compelling, I am thinking of ordering his book. Here is his site:
Obviously I don’t think he is advocating extremely low fiber, just against the really HIGH FIBER.
I mention this in this forum, because yesterday at the Doctor I got a handout stating that a high fiber diet can lead to high SHBG. Now I haven’t had time to research this more, but I thought I would pass this on in case some of you were having problems with high SHBG even though you might have eliminated the most common culprit: high levels of estrogen. I have indeed done this (lowered estrogen…possibly TOO much), yet have a slightly elevated SHBG.
According to this sheet, here are some factors that may cause HIGH SHBG:
significant weight loss (recent)
HIGH FIBER DIET
oral estrogens or high levels of endogenous estrogens and estrone metabolites
Medications: Tamoxifen, carbamazepine, dilantin and other anti-convulsants, clomiphene, metformin, and rifampin
High SHBF results in lower levels of tesstosterone.
For all categories
Evaluate and normalize thyroid function
DHEA supplementation may reduce SHBG
androgens generally lower SHBG
Minimize exposure to xeno-estrogens (don’t heat food in plastic containers)