Intersexual Differences in the Serum-Free Amino Acid Pattern of Young Adults, Normal and Obese Aged Subjects

Abstract

In a group of ethnically homogeneous subjects, intersexual differences and the effect of ageing on the pattern of serum free amino acjd were studied. The amount of the amino acids: valine, isoleucine, leucine, tyrosine, phenylalanine, glutamic acid and ornithine was significantly greater in young males than in young females. Such intersexual differences were not observed in aged subjects. When comparing a group of aged obese females with a control group, no difference in the pattern of serum free amino acid was observed.