Paleopathology (palaeopathology, traditional British spelling) is the study of ancient health and disease. The field is interdisciplinary, stretching from art history to paleontology and from parasitology to genomics.
Less common symptoms of low estrogen levels include: 1  Thinning hair. 2  Weight gain. 3  Arthritis. 4  Difficulty concentrating.
Athletes may experience a drop in estrogen levels. This is because women with low levels of body fat have more trouble producing estrogen. If you are an athlete or have low body fat levels, see your doctor for a good way to replenish your estrogen.