Despite being a water-soluble vitamin, you can only obtain this vitamin primarily through animal foods like meat, milk, and eggs
Reported benefits (per available research): Studied for restoring more youthful pulsatile GH and IGF-1 secretion in older adults, based on a small 1997 randomized, placebo-controlled human trial of a closely related GHRH(1-29) analog published in the Journal of Clinical Endocrinology & Metabolism May support gains in lean body mass in men specifically: that same 16-week trial found a statistically significant increase in lean body mass in men but not in women, alongside a significant increase in skin thickness (a marker of dermal collagen) in both sexes Proposed to support broader recovery and body-composition goals tied to growth-hormone-axis activity, though sermorelin-specific modern adult trial data remains thin, and much of the anti-aging and muscle-building framing used in commercial marketing outpaces the current clinical evidence base Known risks and side effects: Injection-site reactions (pain, swelling, or redness) are the most commonly reported adverse event associated with sermorelin therapy in manufacturer drug-labeling data Headache, flushing, dizziness, difficulty swallowing, hyperactivity, drowsiness, and hives have also been reported less commonly per that same labeling data
Standard folate blood tests do not detect this problem, leading to missed diagnoses and untreated neurological symptoms
On the skin side, pallor, a yellowish tinge, dryness, hyperpigmented patches (particularly on the hands or face), and mouth or tongue soreness are classic signs
While melasma is a significant concern for many, understanding the broader skin-related implications of B12 deficiency is crucial for comprehensive skin health
