Surprising Signs You May Be Vitamin D Deficient

8. Anxiety and depression

Vitamin D is a unique vitamin that influences many parts of our bodies, including the brain. After the vitamin is consumed by food or synthesized in our skin, it releases neurotransmitters like dopamine and serotonin that influence brain functioning. According to scientists, a lack of vitamin D can lead to anxiety, depression and can even be related to mental illnesses including schizophrenia.