7. Think Zinc

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Many people notice that they have white spots underneath their fingernails. This is often thought to be an indication of a calcium deficiency, but in reality it is far more likely to be indicative of a zinc deficiency. Zinc is necessary for a great number of bodily functions, and a serious zinc deficiency can cause problems including impaired healing, skin problems, hair loss, night blindness and even behavioral problems to name just a few. Zinc supplements are readily available, making it easy to address any deficiency and likely clear up any health problems caused by lack of this essential mineral.