Carrot

Food · Vegetables · Roots, Tubers & Bulbs

Connected to · 1

food source · 1

Vitamin A
The orange of carrots comes from beta-carotene, which the body turns into vitamin A as it needs it. Beta-carotene does not dissolve in water; it has to enter tiny droplets formed with dietary fat, called micelles, before the small intestine can take it up, so a carrot eaten plain and one eaten with a little oil deliver different amounts.
Mechanism · 2
Mechanism · Cut on demand, not ready-made
Carrots contain no ready-made vitamin A (retinol); they supply the raw material. An enzyme in the cells of the small intestine cuts beta-carotene down the middle and converts it to retinol, and when the body already has enough vitamin A, this step slows down and the extra pigment settles in the skin. That is why orange palms from eating a lot of carrots are harmless, not poisoning. Ready-made vitamin A from animal foods has no such brake.
In practice · Add oil, cook lightly, skip megadoses
Beta-carotene has to dissolve into micelles, the tiny oil droplets that bile forms from dietary fat and pigment, before it can be absorbed, so cutting carrots up, cooking them until just soft and adding a little oil is the best way to eat them. High-dose beta-carotene supplements are a different matter: in two large randomized trials, ATBC and CARET, smokers who took them developed more lung cancer, not less, so people who smoke or used to smoke should not take high-dose beta-carotene supplements. The amounts you get from vegetables are not part of that concern.

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What is a carrot · color is pigment

EVIDENCEGUIDE 1

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The orange in a carrot comes from beta-carotene. Once it reaches the small intestine, your body cuts it into vitamin A as needed: when you already have enough vitamin A, less gets cut. That step also depends on a little fat in the same meal. The chapter on how beta-carotene becomes vitamin A follows this route step by step.

What we eat is the carrot's taproot, the part that grows underground and stores nutrients. Its orange belongs to a family of plant pigments called carotenoids, led by beta-carotene; the deeper the orange, the more it usually holds.

So the way to get the most from a carrot is concrete: cut it up, cook it until just tender, and add a little fat. And if your palms turn orange after eating a lot of them, there is no need to panic: that is pigment stored in the skin, not poisoning.

An orange carrot taproot and a round slice with a paler centre. — A CLOSER LOOK
The orange root supplies raw material
This illustrates an orange variety; pigment amount and the body's conversion efficiency cannot be measured from the picture.

Educational content, not medical advice — consult a clinician.

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