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.
Younger women, under age 40, with low estrogen can experience early menopause resulting in hot flashes and night sweats. Fatigue is a common complaint associated the condition. Women report forgetfulness, insomnia, lack of sexual desire and painful intercourse when estrogen levels are low or begin to decline.