Thus, the inhibition of key enzymes responsible for various aliments are acknowledged to be a good strategy in the treatment of pathologies (neurodegenerative disorders: cholinesterase; diabetes mellitus: α-amylase and α-glucosidase; skin disorders: tyrosinase and elastase; obesity: lipase inhibition) [38,39]. The gene discussed is TYR; the disease is obesity due to melanocortin 4 receptor deficiency.