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Certain medications can help, including birth control and other hormonal treatments, but these also have systemic effects on the body
Fishman WH et al
A compound engineered to do the opposite, to push that pathway harder in order to grow synapses, is making a bet that you can rev a known cancer-promoting system in the brain without consequences elsewhere in the body, the same uncomfortable tradeoff we examined in our piece on whether peptides cause cancer
[9] [11] However, there is no robust evidence that B12 injections provide benefits to individuals with normal B12 levels
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