Central Mechanism of Action The peptide binds to melanocortin receptors in hypothalamic and limbic brain regions involved in sexual motivation, desire, and arousal
Currently, there is no scientific basis for performing genetic testing in AMS patients except in research protocols.18,58,59 CONCLUSION AMS demonstrably increases the risk of developing melanoma, a malignant neoplasm for which incidence have increased significantly in recent decades and for which early diagnosis is of great importance in the prognosis of the disease.4,59 The identification of patients with AMS, the main clinical risk factor, allows them to be included in short and long term monitoring programs, aimed at early detection of suspicious lesions and the consequent reduction in mortality associated with advanced melanoma.42 In addition, a prevention program could contribute to increased awareness and changes in risk behavior, minimizing the environmental risk not only for patients but also for their families

I may not be a dermatologist, but even I know as an orthopedic surgeon that injecting peptides like MELANOTAN 2 with little to no human safety data in order to tan your skin might create some long-term issues
Some people eat less and feel fine, while others feel sick and weak