When we are young and healthy, our bodies produce sufficient glutathione, but levels can decline significantly due to aging, stress, poor diet, chronic illness, and environmental toxins
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Why medical supervision matters You can find peptides for sale online labeled for research use only. Those are not intended for human use, their quality is not verified, and using them without medical guidance is where people get into trouble
The food and diet supplement industry has in past made claims that later did not hold up to scientific scrutiny
Other Peptides Brecka Mentions Brecka maps several more peptides to categories without going deep on any of them (source): Thymosin Alpha for immune modulation
It has also been shown to stimulate natural killer cell activity, which is especially useful in destroying cancer cells