a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa
"The doctor warned that his strict vegetarian diet lacked enough arginine, which could eventually lower his sperm count."
An amino acid found in animal foods that plays an important role in several physiological processes.
"After adding a supplement of arginine to his diet, he noticed a significant improvement in his energy levels and muscle recovery during workouts."