Progesterone is an important hormone, especially for women. It interacts with other hormones and affects fertility, metabolism, mood and brain function.
Lack of progesterone can result in a relatively higher amount of estrogen to progesterone, often referred to as ‘progesterone deficiency and estrogen excess’. Symptoms of deficiency include fatigue, weight gain, tender breasts, moodiness, mental and physical fatigue and miscarriage.
In men, deficiency is associated with hair loss and prostate cancer. Falling levels are normal as we age.
Read more about the progesterone blood test.