Bone Density. Guide. A bone density test measures the density of minerals (such as calcium) in your bones using a special X-ray. This information is used to estimate the strength of your bones. We all lose some bone mass as we age.
On most lists of products containing estrogen, animal products like milk and beef are at the very bottom. Milk, for example, is said to provide 1.2 micrograms of estrogen per 100 grams.
Milk in general -- and the proteins, sugar, minerals, and non-IGF hormones it contains -- may somehow cause the human body to make more of its own IGF, Dr. Willett says. Sex Hormones and Early Puberty. IGF isn't the only hormone found in the food supply. Ranchers have been fattening up cattle with sex hormones -- most notably estrogen -- since the 1950s. Today most beef cows in the U.S. -- except those labeled organic -- receive an implant in their ear that delivers a hormone, usually a form of estrogen (estradiol) in some combination with five other hormones.