Your handle suggests peptide use but you gave no dosing details. Are you currently injecting any peptides? Age and general health status would also help clarify things.
Up to 2018 and early 2019 I stayed active daily with solid body composition and no health complaints. Late 2019 through 2020 I quit training, gained fat especially around the middle, and lost muscle tone overall. Around that time new chemical intolerances appeared. Melanotan 2 was the first to cause noticeable sides. I adjusted my eating enough to drop a little weight but stayed off exercise and kept eating plenty of sugar and refined carbs. Early 2022 brought tinnitus, sinusitis and dermatitis. Tolerance to other compounds dropped further until I had to stop Melanotan completely because it started affecting mood, something that never happened in prior years of use while I was fit. The last couple of months I have resumed training, yet my midsection still feels padded and I suspect that is visceral fat.