Carotene, Beta | Healthmatters.io (2024)

Carotene, Beta is a key biomarker often measured in clinical labs to assess nutritional status, particularly vitamin A levels. Beta-carotene is a precursor to vitamin A (retinol) and is one of the most common carotenoids found in plants, especially in colorful fruits and vegetables like carrots, sweet potatoes, and spinach.

Key Points About Beta-Carotene:

Function: Beta-carotene is converted into vitamin A in the liver. Vitamin A plays an essential role in vision, immune function, and skin health. It also has antioxidant properties, which help neutralize free radicals and protect cells from oxidative damage.

Clinical Relevance: Measuring beta-carotene levels can provide insight into a person’s vitamin A status, especially in cases of malnutrition, dietary insufficiency, or fat malabsorption syndromes, which can prevent the absorption of fat-soluble vitamins like A, D, E, and K.

Deficiency: Low levels of beta-carotene may indicate inadequate intake of vitamin A precursors or issues with fat absorption. Vitamin A deficiency can lead to conditions like night blindness, dry skin, and a weakened immune response.

Excess: While beta-carotene itself is generally considered safe in high doses, very high intake can cause carotenemia, a harmless condition where the skin turns yellowish-orange, particularly on the palms and soles. Excessive vitamin A, however, (from supplements or liver, not beta-carotene) can lead to toxicity, causing symptoms such as nausea, dizziness, and liver damage.

Lab Measurement: In clinical labs, beta-carotene is typically measured through blood tests. Normal serum concentrations range from approximately 0.3 to 2.5 µmol/L, though this may vary depending on the population and lab reference standards.

Factors Influencing Levels: Dietary intake is the main factor determining beta-carotene levels, but several factors can influence absorption and conversion, including liver function, thyroid activity, and the presence of other nutrients like zinc and protein.

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Carotene, Beta | Healthmatters.io (2024)
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