It is not uncommon to face various stressful situations in your life. However, the effects of stress remain in your body based on your health status. The worse effects of stress can be avoided by effective supply of vitamins, especially B vitamins. Regular and essential uptake of vitamin B complex minimizes your stress levels.
Each and every type of vitamin B is helpful in reducing the stressful conditions. However, most prominent ones including vitamin B3 (Niacin), vitamin B6 (Pyridoxine) and vitamin B12 (cobalamin) play a major role in stress regulation.
A series of biochemical processes are considered to result in stress. Upon occurrence of any stress event, the hypothalamus portion of the brain releases cotocotropin releasing factor (CRF) which is a hormone that enables protection from stress by raising your spirits. 
The CRF promotes signals to the pituitary gland of the brain and enhances it to release Adrenocorticotropic hormone corticotropin (ACHT) which causes cortisol to be released into the blood stream by the adrenal glands. Cortisol in considered to enhance the metabolism. In addition, messages sent by cells of brain and spinal cord stimulate the adrenal glands to release a hormone called epinephrine. This increases heart rate, breathing and alertness. If these processes continue for a long time, serious stressful effects are seen on your physical as well as mental health. Various types of B vitamins have a key role in regulating these biochemical processes and hence, avoid the dangerous effects of stress. Therefore, ensure that you take nutrient diet that is rich in vitamin B to be away from dangerous consequences of stress.