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Description
Groups at higher risk of deficiency include older adults (due to reduced stomach acid production), vegans and vegetarians, people with pernicious anaemia or gastrointestinal disorders affecting absorption, and those taking certain medications such as metformin or proton pump inhibitors

Oral supplements are easy but require discipline

Strength & Power Athletes: Support muscle performance, hydration, and output during heavy lifting and volume phases.*

Definitely get temporal arteries checked out fully
Another factor to consider is that their mechanisms are quite similar, so many users find GHK-Cu sufficient for both skin and hair goals on its own

Those who have had bariatric surgery or other gastrointestinal procedures often have less stomach surface area available for vitamin absorption
