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Patients undergoing chemotherapy have found relief through B12 supplementation as well

Low B12 can be linked with tiredness and other symptoms, but tiredness has many possible causes, so a B12 injection should not be used as a substitute for medical assessment when symptoms are new, severe, or unexplained

Higher isn't always better

In addition to the betalain family, other aforementioned plant derived antioxidants have been identified in beetroot, including epicatechin, rutin, and caffeic acid [2], which to varying degrees appear to be well absorbed and bioavailable in humans [39]

doi: 10.3390/biom11020185 53 PhebyDFHFriedmanKJMurovskaMZalewskiP