A deficiency of carnitine results in a decrease in fatty acid concentrations in the mitochondria and reduced energy production. After ejaculation, sperm motility correlates directly with carnitine content. The higher the carnitine content, the more motile the sperm. Conversely, when carnitine levels are low, sperm development, function, and motility are drastically reduced.
In a clinical study, thirty-seven out of forty-seven men with abnormal sperm mobility who were given carnitine supplementation (1,000 mg three times daily) experienced an increase in sperm count and mobility.
Supplementing the diet with L-carnitine may help restore male fertility in some cases. Start by taking a dose of 250 to 500 milligrams of L-carnitine with breakfast. After one week, add a second dose with lunch. After another week, add a third dose so that you are taking 250 to 500 milligrams with each meal. Continue taking L-carnitine for three to four months.
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