Doctors Warn! Signs Your Body is Starving Inside: 1. Cold hands - Iron 2. No appetite - Zinc 3. Dry eyes - Vitamin A 4. Shortness of breath - Iron 5. Hair falling out - Iron 6. Dry mouth - Vitamin A 7. Brittle nails - Biotin (B7) 8. Tired all day - Vitamin D 9. Feeling low - Vitamin B6 10. Forgetfulness - Omega-3 11. Leg cramps - Magnesium 12. Ting