Prevention: include nuts, seeds, spinach, and vegetable oils in the diet.
5. Niacin (Vitamin B3) Deficiency
A lack of niacin can cause pellagra, which is defined by dermatitis, diarrhea, dementia, and nerve-related issues including tingling and numbness.
Risk factors: alcohol dependence, poor diet, or certain gastrointestinal conditions.
Food sources: poultry, fish, peanuts, and fortified grains.
When to Worry
Occasional tingling that enhances after changing posture is usually harmless. But if numbness is persistent, spreading, or linked with weakness, dizziness, or confusion, it should not be neglected. Vitamin deficiencies can often be corrected with dietary changes or supplements, but long-term nerve damage may occur if left untreated.
