From the Fifth (Boston University) Medical Service, Boston City Hospital, and The Department of Medicine, Boston University School of Medicine, Boston, Mass. Aided by a grant from the Committee on ...

The first sign of vitamin A deficiency is often night blindness. Xerophthalmia also negatively affects the cornea of the eye and can lead to irreversible blindness if left untreated.

Vitamin A is essential for maintaining optimal eye health, and its deficiency can have serious consequences, ranging from ...

Fatigue Unusual fatigue or sluggishness after a good night's sleep may be an early symptom of vitamin D deficiency. This might affect the proper production of energy in the body and cause feelings ...

His pioneering work in studying vitamin A deficiency and blindness ... The night-blind children seemed to be dying at a much higher rate than the children with normal sight. Could the vitamin ...

or 1.4 billion women suffering from iron deficiency, anemia, and vitamin A and up to 800 million children, or 14% of the world population. The deficiencies are especially severe in developing ...