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Yes, injections are more effective for people who cannot absorb B12 properly, as they bypass the digestive system and deliver the vitamin directly into the bloodstream
JCI Insight (2021) 6(13):e143385
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Researchers study this combination to analyze the complementary mechanisms of Growth Hormone Releasing Hormones (GHRH) and Growth Hormone Secretagogues (GHS)
Lomax 2009)
Under World Athletics rules, athletes are responsible for knowing what is prohibited, and WADA says athletes may apply for a therapeutic use exemption (TUE) when a medical condition requires a prohibited substance or method
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