What are the effects of female sex hormones from cow’s milk on men, women and children?
All foods of animal origin. contain hormones, but most of our dietary exposure to hormones comes from dairy products. By quantity, as you can see below and at 0:16 of my video The effects of cow’s milk hormones on cancerhe is mainly prolactin, corticosteroids and progesterone, but there are also many estrogens, which become even more concentrated when other dairy products are made. For example, hormones are five times more concentrated in cream and cheese, and ten times more concentrated in butter.
When it comes to steroid hormones in the food supply, approximately three-quarters of our exposure to ingested female sex steroids come of dairy, and the rest is divided equally between eggs and meat (including fish). In fact, eggs contribute as much as all meat combined, which makes some sense since an egg comes directly from the ovary of a chicken. Among the various types of meat, you get as much from white meat (fish and poultry) as from pork and beef, and this is due solely to natural hormones, not to injections of added hormones, such as growth hormone. bovine. So, it doesn’t matter if the meat is organic. Animals make hormones because they are animals, and it is understandable that their hormones end up in animal products.
Approximately half of the people surveyed “do not know that milk contains hormones naturally”, and many “lacked basic knowledge (22% did not know that cows only give milk after giving birth)”; That is, they did not know what milk is for: feeding calves. The researchers suggested that we should inform the public about dairy production practices. In response, one Dairy Science Magazine defendant wrote We have to talk to the public about new industry technologies, such as GMO animals (i.e., genetically modified farm animals), “or controversial breeding practices” (such as taking away our newborn calf so we can have more milk or “zero grazing for dairy cows” (i.e., not letting cows out on pasture), “does not result in high public approval rates,” so ixnay in education.
The public may not know to what extent they are exposed to estrogen through the intake of commercial milk produced from pregnant cows, which has potential implications for public health. “Modern genetically improved dairy cows, such as the Holstein,” the stereotypical black and white cow, can become pregnant again after giving birth and lactate for almost the entire next pregnancy, meaning that, today, milk from Commercial cow contains large amounts of pregnancy milk. hormones, such as estrogen and progesterone.
As you can see in the graph below and at 2:42 in my videoDuring the first eight months of a pregnant cow’s nine-month gestation, the hormone levels in her milk shoot up to more than 20 times. Still, we’re only talking about a millionth of a gram per liter, easily 10 to 20 times less estrogen hormones than you’d find in a birth control pill. In that case, would drinking it really have an effect on human hormone levels?
The researchers analyzed three different estrogens and a progesterone metabolite flowing through the bodies of seven men before and after drinking about a liter of milk. Within hours of drinking milk, her hormone levels skyrocketed, as you can see in the graph below and at 3:08 in my video.
The researchers also I look on the average levels of female sex steroids flowing through the bodies of six schoolchildren (average age eight) before and after drinking approximately two cups of milk. Within a few hours of drinking the milk, her levels skyrocketed, tripling or quadrupling her initial hormone levels, as you can see in the graph below and at 3:23 in my video. So, one can imagine the effects that milk could have on men or prepubescent children, but what about women? Presumably, women would have high levels of estrogen in their bodies in the first place, right? Well, not all women. 
What about postmenopausal women and endometrial cancer, for example? Estrogens have “a central role” in the development of endometrial cancer, cancer of the lining of the uterus. “Milk and dairy products are a source of steroid hormones and growth factors that could have physiological effects in humans.” So, Harvard researchers followed tens of thousands of women and their dairy consumption for decades and found a significantly increased risk of endometrial cancer among postmenopausal women who consumed the most dairy, as shown below and at minute 4: 19 of me video. 
What about dietary exposure to hormones and breast cancer? Unfortunately, “understanding the role of dietary hormone exposure in the population burden of breast cancer is It is not possible at this time.”
To learn more about the relationship between cancer and dairy, watch the related videos below.
I talk about the effect of dairy estrogen on men in Dairy Estrogens and Male Fertility.
What about the phytoestrogens in soy? Look here.
