The four stages of vitamin B12 deficiency

If you recently switched to a 100% plant-based diet, you can relax for quite some time. The adult liver can store enough vitamin B12 to last 1–5 years. But after that, and without “careful planning”, your health could suffer serious and irreversible damage.

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The physical symptoms of mental illness

Alicia was certainly different, but she was typical in one regard: she had a combination of physical and mental symptoms. And, as it turned out, there was one underlying cause. Alicia’s brain lacked fatty acids, and this deficiency was manifesting in other parts of her body.

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How your skin colour is linked to your mental health

You probably associate vitamin D with bone health, but that’s just a fraction of the picture. There are receptor sites for this vitamin throughout the brain and deficiency is associated with a range of neurological disorders, including depression, schizophrenia, dementia (including Alzheimer’s) and Parkinson’s disease.

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You only need one diet

Along with chronic diseases, something else is starting to surface, something less visible but arguably more sinister. The human brain is shrinking, as confirmed by a body of research that has been accumulating since 1988. This shrinkage — atrophy — began during the Epipaleolithic period, which was the transitional period between hunter-gathering and agriculture, and remains an ongoing phenomenon. Over the last 20,000 years, average brain size has decreased by 10%. What’s even more alarming is that the last 4,000–6,000 years have witnessed an acceleration of this atrophy.

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