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That left people concerned that phytoestrogens, like those found in soy, would put you at increased risk of breast cancer, as estrogen activity can act as a catalyst for cancer growth.
It is unclear if phytoestrogens have any effect on male physiology, with conflicting results about the potential effects of isoflavones originating from soy. [1] Some studies showed that isoflavone supplementation had a positive effect on sperm concentration, count, or motility , and increased ejaculate volume.
Xenoestrogens are a type of xenohormone that imitates estrogen.They can be either synthetic or natural chemical compounds.Synthetic xenoestrogens include some widely used industrial compounds, such as PCBs, BPA, and phthalates, which have estrogenic effects on a living organism even though they differ chemically from the estrogenic substances produced internally by the endocrine system of any ...
Equol is a compound that can exist in two mirror-image forms known as enantiomers: (S)-equol and (R)-equol.(S)-equol is produced in humans and animals with the ability to metabolize the soy isoflavone daidzein, while (R)-equol can be chemically synthesized. [9]
Men with aromatase deficiency and estrogen insensitivity syndrome, and hence estrogen deficiency, appear to have normal sexual desire, function, and activity. [22] [21] However, estradiol supplementation in some men with aromatase deficiency increased sexual desire and activity but not in other men with aromatase deficiency.
Gynecomastia is thought to be caused by an altered ratio of estrogens to androgens mediated by an increase in estrogen action, a decrease in androgen action, or a combination of these two factors. [7] Estrogen and androgens have opposing actions on breast tissue: estrogens stimulate proliferation while androgens inhibit proliferation.
Side effects of HDE specific to men may include gynecomastia (breast development), feminization and demasculinization in general (e.g., reduced body hair, decreased muscle mass and strength, feminine changes in fat mass and distribution, and reduced penile and testicular size), and sexual dysfunction (e.g., reduced libido and erectile dysfunction).
Ethinylestradiol is an example of a semi-synthetic estrogen. Specific compounds that have partial agonist activity for steroid receptors may require treatment by a steroid in one cell type, and, therefore, act like natural steroid hormones. These compounds are used in certain medical conditions.