If you feel sad and lethargic during the fall and winter months, you might have seasonal affective disorder (SAD). Vitamins B6 and B12 affect and help regulate your mood, and might help alleviate SAD. A Finnish study reports vitamin B12 helps reduce depression.
Seasonal Affective Disorder
SAD reoccurs during the same season each year. Causes include drops in melatonin and serotonin levels, and disruptions in circadian rhythms. People with SAD report excessive sleeping, feelings of depression, hopelessness and a lack of interest in activities.
Vitamins B6 and B12
Vitamins B6 and B12 promote healthy blood cells, and help regulate the nervous system. They affect mood and brain functioning.
The B Vitamins and SAD
Vitamins B6 and B12 promote dopamine production, one of the body's neurotransmitters responsible for pleasure. If a person does not have adequate amounts of these vitamins, he might experience lethargy, a lack of concentration, anxiety and other symptoms similar to SAD.
Food Sources of Vitamins B6 and B12
Food sources include fish, meat, chicken, cheese, milk, eggs and fortified cereals. Vegetarians should consider a supplement.
Daily Requirements
Eat 1.3 to 1.7 mg of vitamin B6 per day. Eat 2.4 mcg of vitamin B12 per day.
