What are B Vitamins And Why Do They Affect Your Mood?

Ever notice that when you take B vitamins regularly, nothing seems to bother you?

Many people comment on this, especially in the winter when they aren’t getting enough sunshine, which is known to improve mood quite a lot.

There’s a reason for this. The B vitamins are a group of vitamins that work together with other B vitamins, other vitamins, and other minerals in the body. None of them work alone.

Their primary jobs in the body are to allow you to break down your food properly indigestion, give you a stable mind and emotions, and keep your skin looking good.

When you think about it, to stay happy you have to break down your food properly. Who can feel good when they have constipation, diarrhea, or gas? To stay happy, your skin has to look good, too.

So let’s take the top five B vitamins that make you happy and give you a summary of each of them.

vitamins for energy

Vitamin B1 – Thiamine

You may not know it, but this B vitamin is especially essential for your stomach to make its hydrochloric acid for digestion. It eliminates nausea and improves muscle tone in both the stomach and in the body. Most importantly, it improves your mood.

Without thiamine, you are emotionally unstable, have a doom and gloom attitude, fatigue easily, have pain in your abdomen, are constipated and clumsy. Confusion and loss of memory are also seen in deficiency.

Vitamin B3 – Niacin

There are a few different forms of niacin, such as nicotinic acid, niacinamide, and niacin. It’s especially important for brain metabolism, as well as for the breakdown of fats, carbohydrates, protein, and alcohol.

If you get enough of this vitamin, you’ll reduce your risk of heart attacks and stroke by 26-27%. It’s needed for stomach acid, for a healthy digestive system and the synthesis of sex hormones.

Without niacin, you will have bad breath, fatigue, no appetite, insomnia, depression, nervous disorders, headache, apathy, disorientation, recurring headache, diarrhea, nausea, and vomiting. Memory loss also occurs, and this deficiency leads to death.

Vitamin B6 – Pyridoxine

Vitamin B6 also contributes to the production of hydrochloric acid in the body. Over 100 enzymes depend on it in the body for protein metabolism.

It helps you synthesize antibodies and red blood cells but also serotonin, GABA, and dopamine that keeps you happy. Another function is to reduce depression that starts later in life. It’s essential for your nervous system.

Deficiency causes symptoms such as low blood sugar, slow learning, and slow thinking, weakness, hair loss, irritability, confusion, nervousness, and depression.

Vitamin B12 – Cyanocobalamin

This B vitamin is also important for the synthesis of neurotransmitters and the healthy metabolism of nerve tissues. It keeps the myelin sheath of the nerves in a preserved state.

Symptoms of deficiency include irrational anger, severe psychosis, dementia, depression, fatigue, sleep disorders, disorientation, and body odor. Nervousness and insomnia are also symptoms.

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Folic Acid

Folic acid is essential for emotional and mental health, brain development, and contributes to the production of hydrochloric acid in the stomach.

Deficiency symptoms include forgetfulness, mental illness, dementia, irritability, mental sluggishness, fatigue, and shortness of breath.

The mark of a very good B vitamin supplement is dependent on the following criteria:

  • All the B vitamins are included. None are left out.

  • The right dosages are used.

  • The right forms are used, such as the more absorbable forms.

  • May contain other nutrients to increase absorption.


  1. Merete C, Falcon LM, Tucker KL. Vitamin B6 is associated with depressive symptomatology in Massachusetts elders. J Am Coll Nutr. 2008;27(3):421–427.
  2. O’Leary F, Samman S. Vitamin B12 in health and disease. Nutrients. ;2(3):299–316. doi:10.3390/nu2030299
  3. Digby JE, Ruparelia N, Choudhury RP. Niacin in cardiovascular disease: recent preclinical and clinical developments. Arterioscler Thromb Vasc Biol. 2012;32(3):582–588. doi:10.1161/ATVBAHA.111.236315
  4. Reynolds EH. Folic acid, ageing, depression, and dementia. BMJ. 2002;324(7352):1512–1515. doi:10.1136/bmj.324.7352.1512

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