Tuesday, September 24, 2013

Effects of age on male fertility.

Best Pract Res Clin Endocrinol Metab. 2013 Aug;27(4):617-28. doi: 10.1016/j.beem.2013.07.004. Epub 2013 Aug 17.
Effects of age on male fertility.
Centre for Reproductive Medicine and Andrology/Clinical Andrology, Domagkstrasse 11, D-48149 Muenster, Germany. Electronic address: Michael.Zitzmann@ukmuenster.de.
Later parenting is considered by many to have advantages, parents-to-be may feel themselves more stable to rear children. In addition, many men start a second family later in life. Thus, paternal age becomes an emerging issue. Aging affects male fertility by a scope of factors, which are not fully understood to date. Generally, the amount of produced sperm cells as well as their motility decreases with age, as testicular histological architecture deteriorates. Decreased fecundity and an increased risk for disturbed pregnancies occur with advancing paternal age. Some rare autosomal dominant pathologies are clearly related to paternal age. Altered patterns of epigenetics/gene expression in aging sperm seem to affect a range of neurocognitive disorders and also metabolic dyshomeostasis across generations. Such effects refer to men older than 40 years and may have impact on socio-economic issues. Nevertheless, councelling of older men seeking paternity should be patient-oriented and weigh statistical probabilities against the right for individual life-planning.
Copyright © 2013 Elsevier Ltd. All rights reserved.

aging and sperm, aging fathers, epigenetics and fertility, male fertility, paternal age