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The recommended daily amount of vitamin B12 is 2.4 micrograms, but many people cannot absorb enough B12, resulting in a deficiency
Peer review Peer review information Nature Communications thanks Toni Giorgino and the other, anonymous, reviewer(s) for their contribution to the peer review of this work
DSIP is often discussed as if it only affects sleep, but sleep-related substances can interact with other health issues
Powell MF, et al
They can also support overall wellbeing where appropriate
Poorly organised collagen, the kind typically deposited in avascular healing, is mechanically inferior
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