L-carnitine plays a powerful role in the process of sperm formation, sperm maturation, and the maintenance of sperm quality. L-carnitine is particularly vital in both the development and maturation of sperm in the testes, in the development of the sperm membrane, and in the metabolic processes as an energy source following ejaculation.
Healthy sperm are defined not just by count, but also by sperm motility and by healthy morphology (sperm shape and size and the integrity of sperm membrane). Sperm motility is determined by the percentage of sperm that are moving and qualified by the sperm’s capacity to “swim” in a sustained, forward direction. Healthy sperm motility is the critical attribute that allows sperm to propel themselves through the uterus to the fallopian tube, penetrate the surface of the ovum, and fertilize the egg.
L-carnitine plays a crucial role in sperm development and maturation. Equally important, once the sperm is ejaculated, the sperm requires metabolic efficiency in processing fat and sugars into energy – which translates into sperm motility. Sperm motility refers to the sperm’s vital ability to move or “swim”, and efficient sperm metabolism (the processing of fuel to energy) is central to male fertility and fertilization. Sperm must exhibit the ability to metabolize energy effectively in order to swim from the vagina through the cervix, into the uterus and fallopian tube and penetrate the egg. L-carnitine plays a vital role in maintaining the sperm membrane and the metabolic processing of endogenous fuel into energy, expressed as sperm motility.