5 Signs You’re Missing Critical B Vitamins

Our bodies talk to us all the time—but most people ignore the message.

Dry skin, headaches, mood swings, sleep issues… We often treat these as isolated problems that call for medication.

However, more often than not, these are just symptoms of an underlying issue.

This is especially the case when you run low on B vitamins.

B vitamins are eight water-soluble nutrients that work together to support energy production, brain function, and cell metabolism.

While blood tests can confirm your levels, your body often sends clear signs when you’re running low.

You just need to know what to look for…

Here are the top five signs that you’re not getting enough of your Bs.

Symptom #1 – Fatigue

Who isn’t tired these days? Hectic schedules and a lack of sleep take a toll.

But there’s often more to the story.

In reality, not getting enough vitamins, such as B12 and folate, can reduce red blood cell production. This decreases the delivery of oxygen throughout your body, resulting in fatigue and shortness of breath.

Symptom #2 – Pale skin

Many people assume they’re pale simply from a lack of sun exposure. However, pale skin can also occur due to a decrease in red blood cell production caused by a deficiency in B12 and folate.

Symptom #3 – Tingling or numbness

B vitamins are vital for healthy nerves. A lack of B12, in particular, can lead to nerve damage, causing tingling or numbness—especially in your hands and feet.

Symptom #4 – Mouth ulcers

B vitamins play a key role in maintaining the health of the mucous membranes in your mouth. Studies link B deficiencies to mouth ulcers and cracks in the corners of your mouth.

Symptom #5 – Depression

Vitamin B12 and folate are critical for nervous system function and overall brain health. They also help produce neurotransmitters like serotonin and dopamine that are involved in mood regulation. When you’re deficient, your mood and mental health can suffer.

If any of these symptoms sound familiar, discuss having your levels tested with your doctor. In the meantime, I recommend increasing the B vitamins in your diet.

The best foods to boost your Bs include meat, fish, chicken, eggs, and dairy. Plant-based options include, nutritional yeast, leafy greens, legumes, and fortified foods.

While increasing B-rich foods is always the first step, sometimes dietary changes alone aren’t enough—especially if you’ve been deficient for a while or have absorption issues. In these cases, targeted supplementation under professional guidance can help restore your levels more quickly than food alone.

Remember, when your body is talking to you, it’s always a good idea to listen.

P.S. The TRUTH about multivitamins REVEALED!

View Sources

Ankar A, Kumar A. Vitamin B12 Deficiency. [Updated 2024 Sep 10]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-.