Each year an estimated two hundred fifty thousand to half a million children go blind from vitamin A deficiency.

VOA: special.2011.03.01

Extreme vitamin D deficiency causes deformities in children and weak bones in adults.

VOA: standard.2010.05.28

Doctors rarely see these conditions. But studies have linked vitamin D deficiency to a number of serious health problems, including heart disease, several types of cancer, osteoporosis,diabetes, Alzheimer's disease and some autoimmune disorders.

VOA: standard.2010.05.28

Some have more serious symptoms such as bowel mal-absorption, abdominal pain, diarrhea and nutrient or vitamin deficiency.

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Some succumbed to beriberi -- caused by a vitamin deficiency and easily treatable.

CNN: MALAYSIA

Having a vitamin deficiency (such as of calcium or magnesium) may be linked with teeth grinding, so it's important to follow a well-balanced, nutritious diet and take a multivitamin supplement if needed.

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