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Side effects like reactions at the injection site are common
A deficiency in vitamin B12 can disrupt key functions in the body that will lead to excessive hair shedding
and hot flashes
The National Institutes of Health shares the following recommended dietary allowances (RDAs) in micrograms (mcg) when it comes to vitamin B12: Teens and adults more than 14 years old: 2.4 mcg Pregnant women: 2.6 mcg Breastfeeding women: 2.8 mcg Food is also a great source of nutritional goodness, and many people are able to fulfill all of their B12 needs through diet alone
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