Tolerable Upper Intake Level Of Vitamin A

For this reason uls upper tolerable intake levels have been established for many nutrients.

Tolerable upper intake level of vitamin a. Vitamin c chloride fluoride iron phosphorus potassium. 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. There is an increased risk of an adverse event when exceeding the ul although sometimes the risk is acceptable when the nutrient is used in medical treatment such as to treat a severe deficiency.

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. It is complemented by fortifying foods with 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.

For certain nutrients the. Unless otherwise specified the ul represents total intake from food water and supplements. The scf did not have sufficient time to adopt opinions for the following vitamins and minerals.

Tolerable upper intake level ul is defined as the highest level of nutrient intake that does not increase the risk of adverse health effects to almost all individuals in the general population. The tolerable upper intake level ul is the maximum level of total chronic intake of a nutrient from all sources judged to be unlikely to pose a risk of adverse health effects in humans. The recommended dietary allowance rda and adequate intake ai values are considered to be levels of nutrient intake that meet or exceed the needs of.

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. This table compares the typical levels of recommended daily nutrient intake to the united states tolerable upper intake levels uls and the united kingdom s safe upper levels suls. The scf opinions covered 22 out of the 29 nutrients which were considered to be within its mandate for this task.

Following a request from the european commission the scientific committee on food scf which. The ul tolerable upper intake level is the maximum amount of daily vitamins and minerals that you can safely take without risk of an overdose or serious side effects. Opinions on tolerable upper intake levels of individual vitamins and minerals.