Summarize the following:
Soybeans are rich in phytoestrogenic compounds known as isoflavones (especially genistein and glycitein). These compounds mimic the effect of estrogen in the body, which can reduce the production of testosterone secondarily. Soy also contains a compound called daidzein, which can be transformed in the large intestine by some people (the process needs certain "friendly" bacteria) into the highly anti-androgenic compound equol. Equol can directly reduce the production or effects of testosterone.  Soy products are diverse and can be found in cereals, breads, tofu, various beverages, energy bars and meat substitutes (vegetarian hot dogs and burgers, for example). Soy is a phytoestrogen, or plant compounds that also bind to estrogen receptors.  They  "are not" equivalent to human produced estrogen.  Unlike human produced estrogen which acts upon both of estrogen's alpha and beta receptors, plant estrogens preferentially only act upon beta receptors.   Despite rumors on the contrary, soy consumption is not associated with breast or thyroid issues (estrogen alpha receptor issues) and have shown in clinical studies to be generally healthful. Nevertheless, soy has a number of real issues, one may be related to GMO soybeans, the other is food processing.   High temperature acid hydrolysis of soy protein commonly used to process soy makes cancer causing substances such as 3-MCPD and 1,3-DCP.  Make sure your sauces and soy powders based on soy are processed without high heat.  (for soy/oyster/hoisin/teriyaki sauce in particular, this means "naturally fermented", a process which weeks not hours.) Overconsumption of soy may reduce collagen production as collagen is disrupted through the estrogen beta receptor. Flaxseeds are high in omega-3 fatty acids (which have an anti-inflammatory effect) and compounds called lignans, which are highly estrogenic (stimulates estrogen production). Lignans are also able to reduce total and free testosterone levels in your body, while suppressing the conversion of testosterone into the more potent dihydrotestosterone. Remember that flaxseed needs to be ground up in order to be digested by people. Sprinkle ground flaxseed on your breakfast cereal and/or yogurt. You can also find whole grain breads with flaxseed added at most quality grocery stores.  Lignans work by increasing levels of sex hormone binder, which renders testosterone molecules inactive by binding to androgen receptors within the body. Among commonly eaten foods, flaxseed is the richest source of lignans by far, with sesame seeds a distant second. Testosterone is a steroidal hormone that requires cholesterol to be produced. Cholesterol is only found in saturated fat from animal products (meat, cheese, butter, etc.). Some cholesterol is essential for making steroidal hormones and virtually all the body's cell membranes, but diets rich in saturated fat tend to trigger increased testosterone production. Furthermore, diets high in monounsaturated fat (avocados, most nuts, olive oil, canola oil, safflower oil) boost testosterone levels also. Polyunsaturated fatty acids (PUFA) are the only fats associated with reduced testosterone levels.  Most vegetable oils (corn, soy, rapeseed/canola) are rich in omega-6 PUFAs, although consuming them in large amounts to reduce testosterone could very well lead to other health problems, so be cautious. Healthier forms of PUFAs (rich in omega-3) include fish oils, fatty fish (salmon, tuna, mackerel, herring), flaxseed, walnuts and sunflower seeds. Diets high in saturated fat may also increase your risk of cardiovascular disease, although omega-6 PUFAs may not be much better for your heart. Balancing natural fats is the key, while eliminating hydrogenated fats. Refined carbohydrates are high in easily digested sugar (glucose), which spikes insulin levels and triggers the ovaries to produce more testosterone — similar process to type 2 diabetes, although short-term effects instead of long term. Thus, avoid refined carbohydrates (anything with high fructose corn syrup) and choose healthier carbs such as whole grain products, fresh berries and citrus fruits, fibrous veggies, leafy greens and legumes.  Products high in refined sugars that you should avoid or minimize include candy, cookies, cakes, most store-bought baked goods, ice cream, chocolate, soda pop and other sugary drinks. A diet high in refined sugars also increases your risk of heart disease, obesity and type 2 diabetes. There are a number of herbs that can have anti-androgenic effects (based on various animal studies), although their direct effect on testosterone levels in women has not been well studied. Herbs most commonly used for their anti-androgenic properties include saw palmetto, chaste berries, black cohosh, licorice, spearmint and peppermint teas, and lavender oil. Always consult with your doctor before taking any herb that has a reputation of being able to impact hormones.   DO NOT take these herbal supplements if you are pregnant or breastfeeding, or wanting to become pregnant in the near future. Women who have a history of cancer (breast, uterine, ovarian) or other hormone-related problems, should supplement with these herbs only while under their doctor's supervision.
Eat more soy products. Add more flaxseed to your diet. Limit your fat consumption. Avoid refined carbohydrates. Consider using herbal remedies.