For additional Healthcare News visit our Breaking News Archive. Carotenoids, present in certain fruits and vegetables, are converted by the body into retinol, or vitamin A. Researchers have found that it takes twice as much carotenoids to create retinal than previously thought. Approximately 40 percent of Americans take dietary supplements, which include vitamins and minerals, according to a report released by the US Department of Health and Human Services . Too little Inadequate consumption may lead to vision problems. Some research indicates inadequate consumption may lead to bone disease.
Inadequate consumption can lead to anemia.
Too much More than 3,000 micrograms may increase birth defects, adult liver abnormality, and bulging of skull in infants and young children. No adverse effects reported. More than 45 milligrams may cause gastrointestinal problems and possibly heart disease. Too little Not enough information available. Inadequate intake of iodine may lead to mental retardation, dwarfism, hypothyroidism, or goiter.