Tolerable Upper Intake Level For Vitamin A

A model for the development of tolerable upper intake levels vitamin a vitamin k chromium copper iodine iron manganese molybdenum zinc arsenic boron nickel silicon and vanadium uses of dietary reference intakes a research agenda.

Tolerable upper intake level for vitamin a. Concern over increased risk of bone fracture associated with vitamin a intakes below the tolerable upper intake level ul among populations in affluent countries conflicts with the need to increase intakes in less. If the nutrient intake increases above the tolerable upper intake level or ul the risk of ill effects may also increase. B rda recommended dietary allowance ai adequate intake indicated with c ul tolerable upper intake level from food supplements combined d sul safe upper levels.

Following a request from the european commission the scientific committee on food scf which. Suls and guidance levels incidated by set by the expert group on vitamins and minerals of the food standards agency united kingdom. The scf opinions covered 22 out of the 29 nutrients which were considered to be within its mandate for this task.

Learn your daily nutritional requirements for essential vitamins and minerals by age gender and life stage based on the latest recommended daily allowances rdas and adequate intakes ais as well as daily values dvs and upper tolerable intake levels uls. Rdas for vitamin a are given as retinol activity equivalents rae to account for the different bioactivities of retinol and provitamin a carotenoids all of which are converted by the body into retinol see table 1. These are intended to be.

Maximum daily intake unlikely to cause adverse health effects. Tolerable upper intake levels ul to caution against excessive intake of nutrients like vitamin a that can be harmful in large amounts. This is the highest level of daily nutrient consumption that is considered to be safe for and cause no side effects in 97 5 of healthy individuals in each life stage and sex group.

Vitamin a supplementation reduces vad and increases child survival. A tolerable upper intake level ul is the highest level of daily nutrient intake that is likely to pose no risk of adverse health effects to almost all individuals in the general population. Tolerable upper intake level ul.

Vitamin c chloride fluoride iron phosphorus potassium. Opinions on tolerable upper intake levels of individual vitamins and minerals. Unless otherwise specified the ul represents total intake from food water and supplements.