The topic of hormones in our food is a hot button issue, and for good reason, as these ingested hormones can be deleterious to our health. However, dairy is often left out of this discussion when it should be the first food we examine.
A research paper titled The Milk We Drink, Food For Thought penned by a small team of doctors at the Hadassah Hebrew University Medical Center addressed this issue and not only found a correlation between dairy and consumed hormones but also found that these hormones could negatively affect fertility. The following is a summary of their findings.
Due to a number of socio-political and economic factors, the modern dairy industry is in the business of producing large quantities of cows’ milk at an increasingly rapid pace.
This necessitates that dairy cows be impregnated while still giving milk to reduce the time between her 'dry' period and another lactation cycle.
A pregnant animal naturally produces a significant amount of sex hormones, which are consequently transferred into the milk consumers drink (you can’t filter out hormones).
Researchers who have studied hormones in cows’ milk have expressed concern over the amount of estrone, estrogen sulfate, and progesterone found in milk and milk products.
Some are particularly concerned with the hormone content of whole-fat milk, butter, and cheese, as estrogen and progesterone are fat soluble and cholesterol-based, and these foods are higher in cholesterol than lower-fat dairy products.
Preliminary studies were conducted to see if the human body actually absorbs and is affected by these foreign hormones, ultimately concluding that yes, it is. After consuming 600 mL