Subscription Information 5. Past Issues 6. If the parathyroid glands are stimulated, calcium is pulled from the bones to balance the blood. Too little thyroxin will lead to poor absorption of calcium from the intestines. Too much thyroxin will cause bone loss.
Chronic stress leads to adrenal overactivity and calcium loss.
The vast majority of a woman's estrogen is derived from these adrenal hormones. Estrogen and progesterone both promote bone health. Normal healthy young women have abnormal menstrual periods and absence of ovulation due to progesterone deficiency. Women who always had regular menstrual cycles were found to have greater spinal bone density than women who experienced frequent irregularities in their periods. At greatest risk were women with severe menstrual irregularities and low body weight.