I maintain this is one of the primary reasons for the increase of osteoporosis among us. The best way to right your progesterone levels is to eat foods high in zinc and low in copper. I discuss this in great depth in my Web page under the PMS section, so I won't waste time and repeat it here. The British Medical Journal reported that gastric hydrochloric acid helps the absorption of dietary calcium. Don't drink chlorinated water.
Chlorine is a calcium antagonist.
Drink bottled water if you can afford it. Or, pour tap water into a pitcher and place it in the refrigerator for 24 hours. The chlorine will dissipate in that time. Use laxatives, diuretics, antacids and cortisone treatments as little as possible. Yup, they keep your body from absorbing calcium properly.