vitamin B12 deficiency
Vitamin B12 is one of eight B vitamins that have a vital role in keeping our bodies in tip-top condition. B12 is arguably the most important; from fighting fatigue and keeping our bodies' nerve and blood cells healthy to producing DNA. Your body doesn't make Vitamin B12, so it's important to get it from a balanced diet. Beef, pork, eggs, milk, cheese and fish are all good sources of B12.
The effect of vitamin B12 on moods is not yet fully understood. However, this vitamin plays a vital role in synthesising and metabolising serotonin, a chemical responsible for regulating mood. Therefore, vitamin B12 may lead to decreased serotonin production, which may cause a depressed mood.
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