How to identify a nutrient deficiency
Symptom: Muscle spasms or twitches.
Possible deficiency: Magnesium.
A majority of Americans don't get enough of this mineral. Shortfalls may increase risk of heart disease, diabetes, osteoporosis, and migraine headaches.
What to eat: Nuts, seeds, legumes, spinach, oats, barley.
Supplement with: 300-400 mcg chelated magnesium (such as magnesium glycinate, or other form of magnesium ending in "ate") daily.