Background: In many mammals, the duration of the nocturnal melatonin elevation regulates seasonal changes in reproductive hormones such as luteinizing hormone (LH). Melatonin's effects on human ...

Extract: The concerntration of serum luteinizing hormone (LH) and follicle stimulating hormone (FSH) was determined using a double antibody radioimmunoassay in 129 normal girls. Of theis group, 48 ...

Winter can affect fertility more than you think. Know how cold weather, hormones and vitamin D influence conception chances and IVF success rates.

The 20 participants completing the study had a mean age of 59 years (range 51–69). As expected due to random group assignment, baseline values of urinary LH excretion among the 3 groups were not ...