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Nutritional Influences on Estrogen Metabolism: A Summary - South River Compounding Pharmacy
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Nutritional Influences on Estrogen Metabolism: A Summary

South River Compounding Pharmacy / Articles  / Nutritional Influences on Estrogen Metabolism: A Summary

Nutritional Influences on Estrogen Metabolism: A Summary

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Estrogen affects the growth, differentiation, and function of tissues throughout the body — not just those involved in reproduction. It plays an important role in bone health, protects the cardiovascular system, and influences behavior and mood. While appropriate levels of estrogens are essential for good health, several studies conclude that as exposure to prostate, and thyroid, also increases. Furthermore, excessive estrogen exposure can lead to other health problems such as premenstrual syndrome (PMS), endometriosis, and fibrocystic or painful breasts.
Various lifestyle and environmental factors can influence estrogen production, metabolism, and balance. These include poor diet, obesity, excess alcohol consumption, high insulin levels, medications such as hormone replacement therapy and birth control pills, overexposure to chemicals found in pesticides and industrial chemicals, and agricultural hormones in animal products consumed by humans. Genetics can also play an important role in determining estrogen levels.

Nutritional Support of Optimum Estrogen Metabolism

Many elements of good nutrition and diet play an important part in influencing estrogen metabolism and detoxification. Incorporating dietary changes with the addition of beneficial nutrients and herbs can profoundly affect estrogen balance and potentially reduce the risk of estrogen-dependent cancers and other hormone-related conditions.

Diet

It has been found that dietary interventions such as increasing consumption of cruciferous vegetables like cabbage and broccoli, and foods such as soy can significantly increase the 2-hydroxylation of estrogen. Dietary fiber intake can promote the excretion of estrogen by binding estrogens in the digestive tract and also increases sex hormone binding globulin (SHBG), thus reducing levels of free estradiol. Complex carbohydrates, such as those found in vegetables and whole grains, are more effective in optimizing estrogen metabolism than simply carbohydrates, which can raise blood glucose and insulin levels, resulting in secondary adverse influences on sex hormone balance.

Phytoestrogens

These plant compounds are similar in shape to the estrogen molecule and can bind to estrogen receptors (ERs). They are much weaker than endogenous estrogens and, through competitive inhibition, have been shown to prevent the receptor binding of “stronger”, more stimulating estrogens. Phytoestrogens are currently under extensive investigation as a potential alternative therapy for a range of conditions associated with estrogen imbalance, including menopausal symptoms, PMS, endometriosis, prevention of breast and prostate cancer, and protection against heart disease and osteoporosis.
The two main classes of phytoestrogens are isoflavones and lignans. Soy is perhaps the most common food source of isoflavones, but other excellent sources include legumes, clover, and kkudzu root. Higher intakes of soy products and isoflavones, such as consumed in traditional Japanese diets, are associated with low rates of hormone-dependent cancers. Lignans are compounds found in fiber-rich foods such as flaxseeds, whole grains, legumes, and vegetables. Lignans stimulate the production of SHBG in the liver, and therefore reduce the levels of free estrogen in circulation. They also inhibit aromatase, an enzyme that synthesizes estrogen.

Vitamin E and Magnesium

Low serum vitamin E is associated with elevated estrogen levels, andma negatively affect estrogen detoxification. Women with PMS have experienced improvements of their symptoms when given supplemental vitamin E. Magnesium promotes estrogen detoxification by promoting methylation and glucuronidation, key estrogen detoxification pathways. Ovarian hormones influence magnesium levels, triggering decreases at certain times during the menstrual cycle as well as altering the calcium to magnesium ratio. These cyclical changes can produce man of the well-known symptoms of PMS in women who are deficient in magnesium and/or calcium.

Indole-3-Carbinol (I3C)

I3C is a naturally occurring compound derived from cruciferous vegetables that actively promotes the breakdown of estrogen via the beneficial 2-OH pathway. Therefore, I3C is protective to estrogen-sensitive tissues and may be beneficial to those with health issues related to excessive estrogen. Not only does I3C promote healthier estrogen metabolism, but it may also act as a “weak” or anti-estrogen in a similar fashion to isoflavones.

B Vitamins

Folate, B6, and B12 function as important cofactors for enzymes involved in estrogen detoxificaiton; thus, decreased levels of B vitamins can lead to increased levels of circulating estrogens. Certain B vitamins also have the potential to modulate the biological effects of estrogen by decreasing the cell’s response when estrogen binds to the ER. B vitamins also play a role in the prevention of cancer because they are important for DNA synthesis and repair.

Calcium D-Glucarate

Calcium D-glucarate is a natural compound found in foods that appears to have some influence on breast cancer by aiding in detoxification and the regulation of estrogen. It has been found in animal models to lower estradiol levels and inhibit the initiation, promotion, and progression of cancer.

Other Beneficial Phytonutrients and Herbs

Many other compounds derived form a variety of plant sources are available that promote healthy estrogen metabolism. These include curcumin, a compound found in the herb turmeric (Curcuma longa) that increases the phase II detoxification of estrogens; chrysin, a bioflavonoid that inhibits aromatase activity, thus reducing the synthesis of estrogen; the herb, rosemary, which promotes the formation of the 2-OH estrogen metabolite; and D-limonene from citrus fruits, which promotes the detoxification of estrogen and shows promise in the prevention and treatment of breast anad other cancers. Furthermore, many antioxidant nutrients and phytonutrients can reduce the oxidation of the 2-OH and 4-OH estrogen metabolites. Notable nutrients in this group include vitamin C, N-acetylcysteine, the mineral selenium, and green tea.
In addition, traditional societies have long relied on a variety of hormone-modulating herbs in treating women’s health conditions. These include black cohosh, chasteberry, ginseng, dong quai, and licorice. The mechanism of action of these herbs varies; however, many have been found to contain beneficial phytoestrogens.

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