| Literature DB >> 1583036 |
Abstract
Daily luteal progesterone levels were measured for 124 regularly menstruating women, aged 18-44, by radioimmunoassay of steroid levels in saliva. A consistent pattern of age variation in luteal function was found, with the lowest levels of progesterone in the 18-19-year-old and 40-44-year-old groups, the highest values in the 25-34 year olds, and intermediate values in the 20-24 and 35-39-year-old groups. The striking similarity of this pattern of age variation with empirically and theoretically generated curves of apparent fecundability, suggests that age-related changes in ovarian function may underlie observed age variation in fecundability.Entities:
Keywords: Age Factors; Americas; Biology; Demographic Factors; Developed Countries; Endocrine System; Examinations And Diagnoses; Hormones; Laboratory Examinations And Diagnoses; Laboratory Procedures; Massachusetts; Menstrual Cycle; Menstruation; North America; Northern America; Physiology; Population; Population Characteristics; Progestational Hormones; Progesterone; Reproduction; Research Report; United States
Mesh：
Substances：
Year: 1992 PMID： 1583036 DOI： 10.1017/s0021932000019751
Source DB: PubMed Journal: J Biosoc Sci ISSN： 0021-9320