Synthetic peptides for the treatment of cancer, age-related disorders, age-related diseases, skin conditions, radiation damage, obesity, mitochondrial disease, neurodegenerative disease, and metabolic conditions; Pharmaceutical preparations for the treatment and prevention of cancer, age-related disorders, age-related diseases, skin conditions, radiation damage, obesity, mitochondrial disease, neurodegenerative disease, and metabolic conditions; Pharmaceutical preparations for gene therapy fo...