hair and skin health. I tried one. Can see the whiskers in my daily electric shaver seem to have doubled. Other effects less obvious. Seems positive.
The important aspect of peptides is that they can deliver targeted supplements to specific body areas. You can view them easily on several peptide warehouse websites. Rough count suggests over 70 different specific peptide uses.
Anecdote from a friend caught my interest. Male, 65, diabetic. His right leg would go numb at times scaring him. A number of conventional med tests revealed nothing. His MD wrote a prescription for a specific blood test. Next numb attack, rush to ER and get this blood test. Blood test revealed a key B vitamin was not being transported to the problem leg. Simple experiment, take that specific B vitamin every morning. Numb attacks did not reoccur. Friend does not take supplements and had no further interest in the episode.
That anecdote and other research I've done, much in connection with a body scan professional knowledgeable in peptides led me to experimenting with some Rx level things, and early signs are positive.
A lot of information out there, a lot to learn. Some, or possibly many, bodybuilders and celebrities seem to be heavy into it.
Seems like it will be a big thing at some point.