Fibroids are benign, usually painless tumours found in the uterus. They are made of muscle and connective tissue and can grow to the size of a grapefruit. They often cause heavy, irregular, sometimes painful periods. It is known that after menopause with the drop in the oestrogen level they shrink and may disappear completely. They occur most frequently in women from the mid-thirties on when there is a natural decline in progesterone levels. Fibroids are known to be stimulated by oestrogen where there is a deficiency of progesterone. When they are quite small, progesterone can be helpful in many cases and certainly worth trying before a hysterectomy is considered. Also, there are some very effective herbal formulas that can work well with progesterone to control the heavy bleeding.