3. Nerve Compression in the Neck or Arm
Sometimes the issue doesn’t originate in the hand itself. A pinched nerve in the neck or spine can cause numbness that travels down the arm into the hand.
Possible causes include:
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Herniated discs
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Cervical radiculopathy
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Ulnar nerve compression
These conditions interfere with nerve signals from the spinal cord to the hands.
4. Vitamin Deficiencies
A lack of certain nutrients—especially vitamin B12—can damage nerves and lead to tingling or numbness in the hands and feet.
Other nutrients linked to nerve health include:
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Vitamin B6
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Magnesium
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Omega-3 fatty acids
When the body lacks these nutrients, nerve function can become impaired.
