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.
These symptoms are most likely to occur during pregnancy or other periods of hormonal change. While these symptoms are often linked to normal hormonal cycles and fluctuations, there are other more serious conditions that can indicate low estrogen levels in women, including osteoporosis.