New research has revealed that sex hormone levels in men rise and fall with the seasons. Dr Anna-Maria Andersson and colleagues at Copenhagen University Hospital in Denmark, found that the levels of testosterone and luteinizing hormone (LH), the hormone that stimulates production of testosterone, peak in the heat of June and July and fall along with the temperature during winter and early spring. Whether or not seasonal changes in testosterone affect fertility or men’s behavior remains unclear, however previous research has shown that people are more likely to conceive in June and August, and least likely to do so from January through March.
SOURCE/REFERENCE: The Journal of Clinical Endocrinology & Metabolism 2003;88:932-937
