Using the System Configuration utility might make the computer unusable. Only use the System Configuration utility to change the advanced boot options on the computer with guidance from a Microsoft support engineer. Duplication for commercial use must be authorized in writing by ADAM Health Solutions.Important: If the computer is connected to a network, network policy settings might prevent you from following these steps. Links to other sites are provided for information only - they do not constitute endorsements of those other sites. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability.
is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M. The best way to get the daily requirement of important vitamins is to eat a wide variety of fruits, vegetables, fortified dairy foods, legumes (dried beans), lentils, and whole grains.Ī.D.A.M., Inc. Females age 14 and older: 700 mcg/day (for females aged 19 to 50, 770 mcg/day during pregnancy and 1,300 mcg/day during breastfeeding).The RDA for vitamins may be used as goals for each person. The Recommended Dietary Allowance (RDA) for vitamins is how much of each vitamin most people should get each day. 0 to 6 months: 400 micrograms per day (mcg/day).It is set at a level that is thought to ensure enough nutrition. An RDA is an intake level based on scientific research evidence.Īdequate Intake (AI): This level is established when there is not enough scientific research evidence to develop an RDA. Recommended Dietary Allowance (RDA): The average daily level of intake that is enough to meet the nutrient needs of nearly all (97% to 98%) healthy people. These values, which vary by age and sex, include: DRI is a term for a set of reference intakes that are used to plan and assess the nutrient intakes of healthy people. Recommendations for vitamin A, as well as other nutrients, are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board at the National Academies of Sciences, Engineering, and Medicine. Contribute to certain long-term diseasesĮating food sources of beta-carotene may reduce the risk for cancer.īeta-carotene supplements do not seem to reduce cancer risk.
#Difference between perform and preform free
Antioxidants protect cells from damage caused by substances called free radicals. One such carotenoid is beta-carotene.īeta-carotene is an antioxidant. There are more than 500 known carotenoids. Once ingested, the body converts these compounds into vitamin A.
Vitamin A promotes good eyesight, especially in low light. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucus membranes, and skin.
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