A definitive diagnosis can be made by direct examination of the colon by sigmoidoscopy (examination of the lower portion only) or colonoscopy (examination of the entire colon, the preferred approach)
But, Blatner warns, Not all micronutrient [vitamin or mineral] testing is accurate, and it often doesnt give a full picture." Instead, talk to your doctor about any other symptoms youre experiencing that may be contributing to premature graying, advises Blatner
Both peptides are active, and your physician will fine-tune dosages based on your response, lab results, and progress toward your goals
If you are comparing different approaches for improving skin brightness, our guide on whitening injections vs whitening creams: pros and cons explains how different treatment methods differ
(PubMed) Alaei Shahmiri F, Soares MJ, Zhao Y, Sherriff J