l carnitine causes heart disease metabolism in hypertensive failure l-Carnitine and heart disease -

Taking propionyl-L-carnitine seems to improve heart function and exercise tolerance in people with mild to moderate congestive heart failure

Hypoglycemia and diabetes: a report of a workgroup of the American Diabetes Association and the Endocrine Society

A sensitivity analysis after removal of these two studies showed homogeneity between the remaining studies but the meta-analysis still showed no significant effects of carnitines on sperm concentration (MD 0.79, 95% CI 0.39 to 1.96

The authors conclude that statins, in part, work by lowering testosteroneand that this link requires further investigation since it can have a negative impact on male sexual and overall health (Schooling et al., 2013)