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Although more research is needed, its thought that the part of the brain that is responsible for food cravings overlaps with the part of the brain that is responsible for cravings for substances of abuse, says Luba Yammine, an addiction researcher at UTHealth Houston
On the other hand, a study with a different design, namely a randomized, double-blind, placebo-controlled crossover comparison clinical trial, and partially different cohort and methodologies demonstrated that daily oral administration of very low doses (1.5 g/day) of l-ARG for a very short time (17 days) did not improve patients satisfaction with their penile erectile function and their sexual life, analyzed by the standardized KEED questionnaire for ED, in 30 middle-aged men affected by ED of mixed etiology and severity [29], suggesting that higher doses and longer-term supplementation might be required, or that l-ARG might be of particular benefit in subtypes of ED, such as those of vasculogenic etiology
Genetic variants within genes encoding protein targets can modulate the expression or functionality of these targets, mimicking the mechanisms of drug actions [28]
