Mood Variations
Deficiency in vitamin B12 frequently causes mood swings. In fact, vitamin B12 deficiency is directly linked to brain and mood disorders such as dementia and depression. According to studies, insufficient levels of vitamin B12 lead to elevated levels of homocysteine, which damages brain tissues and interferes with nerve signals, causing mood swings. If you have a vitamin B12 deficiency, consuming the supplements can improve the symptoms of mood disorders and alterations.