Here are five warning signs of vitamin E deficiency:

1. Muscle Weakness and Coordination Problems
   Lack of vitamin E can cause muscle weakness, difficulty walking, and poor coordination due to its role in protecting nerve cells.

2. Vision Problems
   Deficiency may lead to damage of the retina, resulting in vision disturbances or impaired eyesight.

3. Weakened Immune System
   Vitamin E supports immune function; deficiency can increase susceptibility to infections.

4. Nerve Damage and Numbness
   Peripheral neuropathy symptoms such as numbness, tingling, or burning sensations in the hands and feet can occur.

5. Reproductive Issues
   In severe cases, vitamin E deficiency can cause infertility or complications in pregnancy.

If you suspect a vitamin E deficiency, consult a healthcare professional for diagnosis and appropriate supplementation.