In PTSD mice models, trauma exposure increased tyrosine hydroxylase expression (the rate-limiting enzyme in catecholamine biosynthesis), elevating stress hormones epinephrine and norepinephrine in serum and colon, which upregulated claudin-2 expression, confirming gut barrier dysfunction (Yadav et al., 2023)
Research on elderly subjects showed that glycine and cysteine supplementation led to a 94.6% higher glutathione concentration, a 78.8% higher fractional synthesis rate, and a 230.9% higher absolute synthesis rate compared to unsupplemented controls
Cross-country skiers, hockey players, alpine athletes, and winter outdoor enthusiasts train in conditions that inherently activate cold shock responses
FSA and HSA are accepted
They can also assist brands in preparing for audits, retailer reviews, and other compliance-related activities