Researchers found that if you don't have vitamin C inside or outside the cells in the retina, the cells and the receptors start to break down and don't function very well;
but as soon as you add vitamin C, function is preserved perfectly well.It is interesting to note, they say, that when the human body is deprived of ascorbic acid, vitamin C stores in the brain are the last to be depleted.
The role of vitamin C in the brain is at this time poorly understood.
I spoke to someone recently who said that vitamin C helped her with depression.
It is perhaps no coincidence that depression and irritability are some of the first symtoms of scurvy (lack of vitamin C).
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