postman
Member
- Joined
- Mar 3, 2016
- Messages
- 1,284
Looks like selection bias to me because it lowers estrogen in many studies, and in some studies it increases estrogen in women but not in men. In the study you linked it increased the testosterone levels from 10 to about 17 for one subject. That's going from hypogonadism, to an acceptable level, roughly a 70% increaseBoron is HIGHLY estrogenic. The bodybuilding community was crazy about it in the 1990s, but then they found out first hand that it raises estrogen (I think all 3 types) and dumped it. Boron has similar effects to cadmium, nickel, cobalt, etc and they are all estrogenic and carcinogenic in higher doses.
Peat is right that unless you are deficient you'd better not mess with it. See below for a study in men.
The effect of boron supplementation on its urinary excretion and selected cardiovascular risk factors in healthy male subjects
"...Supplementation with 10 mg B/d for 4 wk resulted in 84% of the supplemented dose being recovered in the urine. Plasma estradiol concentrations increased significantly as a result of supplementation (51.9±21.4 to 73.9±22.2 pmol/L;p<0.004) and there was a trend for plasma testosterone levels to be increased. However, there was no difference in plasma lipids or the oxidizability of low-density lipoprotein Our studies suggest that the absorption efficiency of B is very high and estimation of the urinary B concentration may provide a useful reflection of B intake. In addition, the elevation of endogenous estrogen as a result of supplementation suggests a protective role for B in atherosclerosis."