The US RDA is a standard set forth by Food and Nutrition Board of National Academy of Sciences National Research Council to help Americans determine a proper level of daily vitamin intake. It is important to note, however, that these levels are sometimes quite modest— intended to meet nutrient needs of already healthy individuals. For some, these amounts may be lower than optimal. For example additional amounts of vitamins may be needed during illness. Consequently, Board has also set two other values: tolerable upper intake levels (UL) and adequate intakes (AI). The UL values are designed to help people avoid over consumption. AL values are established when there is not enough scientific evidence to set an RDA.

It is important to note that different developmental stages and physiologies may require varying vitamin intakes. Children, adolescents, women, and men all have differing needs. Consulting a specialist is best way to determine personal vitamin needs. Moreover, some supplements may negatively interact with prescription drugs. Therefore, all supplemental intakes should be discussed with a physician.

A proper balance of vitamin intake can enhance personal health and increase energy levels. These essential nutrients aid in regulation of many bodily functions and can prevent illnesses. Their value must not be underestimated.

Headaches, ringing, hearing loss, and ear drainage may also develop. Often, as symptoms grow more severe, blurry vision, vomiting, and diarrhea may also occur. These symptoms are more prevalent in children, who suffer an ear infection four times as often as adults do.

Ear Infection Prevention

Prevention is best way to avoid an ear infection. Because Eustachian tubes are connected to sinuses, many nasal sprays have appeared on market to help flush out build up and bacteria in Eustachian tubes as well as nasal passages and sinuses.

Many of nasal sprays and other medicines available include xylitol, which is a natural substance found in fruits and vegetables and used in our everyday metabolism. Xylitol is looks and tastes like sugar, though it contains fewer calories and zero net carbs. Xylitol is a natural bacteria repellant used to prevent more than just ear infection. Xylitol Glossary of Prevention and Benefits explains more of benefits associated with use of xylitol.

In understanding ear infection and its symptoms, prevention becomes natural step. Xylitol as a leading ingredient is proven to reduce ear infection risk.

Joe Miller is an author of informational articles and online advertisements on business, technology, and health. Information on Ear Infection is available at Xlear.com.