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3. Diabetes

Diabetes is among the most common causes of peripheral neuropathy.

High blood sugar gradually damages the small nerves, especially those in the feet.

Warning signs

• Tingling in both feet
• Burning pain at night
• Loss of sensation
• Foot ulcers
• Slow wound healing

Good blood sugar control significantly reduces the risk of diabetic nerve damage.

4. Vitamin Deficiencies

Several vitamins are essential for healthy nerve function.

Deficiencies may involve:

• Vitamin B12
• Vitamin B1 (thiamine)
• Vitamin B6 (both deficiency and excessive intake)
• Vitamin E
• Folate

People at greater risk include:

• Older adults
• Vegetarians or vegans (for B12 deficiency)
• Individuals with digestive disorders
• People who have undergone bariatric surgery

Treatment involves correcting the nutritional deficiency under medical supervision.