When the body is not supplied with this essential nutrient, it can present various health problems, such as fatigue, diarrhea, numbness, shortness of breath, and nerve damage
Gentle source conditions improve survival of the complex, and when it does survive there is a genuinely useful signature: copper has two stable isotopes, with the lighter accounting for roughly sixty-nine percent of natural abundance and the heavier roughly thirty-one percent
Cell 80 , 263-278.e267 (2020)
Cereals, non-dairy milk, and nutritional yeast may be fortified with vitamin B12, but make sure you fully read the nutrition labels before relying on these sources for B12
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