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Harvard Health Blog

When comparing GHK-Cu injection vs topical options, serums may show more consistency in results due to their easier absorption by the skin's upper layer when applied as instructed, as suggested by research

Ive been immersed in the health, exercise, and fitness industry for over 20 years now, starting out with a fledgling tennis coaching business when I was in high school, to getting a master's degree in exercise physiology and biomechanics, to working for ten years as a personal trainer, strength coach and nutritional consultant, to bodybuilding, Spartan racing, and competing all over the world in Ironman triathlons, marathons, open water swims, adventure races and beyond, to of course what I do now: write, speak, podcast, research, self-experiment and investigate every nook and cranny of both ancient wisdom and modern science for bettering one's body, brain, and spirit

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Product Recommendations Vitamin B12 for MTHFR: Injection or Sublingual