That’s why regular medical follow-up and blood glucose management are important.

If you have diabetes and notice new or worsening numbness, tell your healthcare professional.

---

6. Vitamin B12 Deficiency May Affect Nerve Function

Certain nutritional deficiencies can affect the nervous system.

One particularly important example is vitamin B12 deficiency.

Vitamin B12 is involved in maintaining healthy nerve cells and producing blood cells.

A deficiency can contribute to neurological symptoms such as:

• Numbness
• Tingling
• Balance problems
• Weakness
• Fatigue
• Cognitive changes

B12 deficiency can occur for several reasons.

Some people don’t consume enough B12 in their diet, while others have difficulty absorbing it.

Certain medications and gastrointestinal conditions can also interfere with B12 absorption.

If numbness is accompanied by unexplained fatigue, weakness, balance problems, or dietary risk factors, a healthcare professional may consider blood testing.

Don’t automatically assume you need high-dose supplements, though.

The appropriate treatment depends on whether a deficiency actually exists and what caused it.