Why Are There No Dietary Reference Intakes (DRI) Established for Carotenoids

question 194

Multiple Choice

Why are there no Dietary Reference Intakes (DRI) established for carotenoids?

• A)They are not essential for humans.
• B)There is insufficient evidence to document safe levels of intake for children and adults.
• C)There is insufficient evidence to support their essentiality beyond their role as vitamin A precursors.
• D)Carotenodermia is not considered dangerous and is reversible.

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Definitions:

Embryonic Origin

Refers to the developmental source of tissues and organs in an embryo, guiding the formation of the organism's body plan.

Nervous Tissue

A class of tissue comprised of neurons and supporting cells that specializes in communication throughout the body.

Vasopressin

A hormone released by the pituitary gland that regulates the body's retention of water and constricts blood vessels.

Antidiuretic Hormone

A hormone released by the pituitary gland that signals the kidneys to increase water reabsorption in the blood, thereby controlling the water balance in the body.