What is beta-carotene?

Beta-carotene is a plant-derived carotenoid pigment that acts as a provitamin A, meaning the body can convert it into vitamin A as needed.

What are the main benefits of beta-carotene?

It supports vision and eye health, contributes to immune function through vitamin A production, and provides antioxidant activity. It may also offer modest support for skin health and UV-related protection.

What foods are high in beta-carotene?

Common sources include carrots, sweet potatoes, pumpkin, spinach, kale, and other orange or dark leafy green vegetables, as well as some fruits like mango and apricot.

What is a typical beta-carotene supplement dose?

Supplement amounts vary, but many products provide a few milligrams up to a few dozen milligrams per day. A commonly referenced range is about 3–30 mg daily, depending on diet and individual needs.

Is beta-carotene safe for everyone?

Beta-carotene from food is generally considered safe for most people. High-dose beta-carotene supplements are not recommended for smokers because they have been linked to increased lung cancer risk in this group.

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Beta-Carotene

Moderate study situation·7/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Beta-carotene is a plant-derived antioxidant and vitamin A precursor essential for vision, immune, and skin health, but high-dose supplements increase cancer risk in smokers.

Eye Health Essential Nutrient Antioxidant Immune Booster Skin Health

dose range

3–30 mg

Take once daily with a fat-containing meal.

Consumption

Take as part of a meal containing dietary fat to maximize absorption, preferably from food sources (fruits and vegetables); supplement only under medical guidance for specific deficiencies.

Fat-soluble: take with fat.

Best time

Best taken with meals containing fat for optimal absorption; not advised for supplementation in smokers due to cancer risk.

Description

Beta-carotene is a carotenoid pigment found in colorful fruits and vegetables. It serves as a major dietary source of provitamin A, supporting vision, immunity, and overall antioxidant protection. While generally safe from food, supplementation is not universally recommended due to risks in certain populations.

benefits

Main effects with level of evidence

Moderate

Note on evidence

Benefits are best supported for prevention of vitamin A deficiency and general antioxidant protection; supplement safety concerns for specific groups (smokers, asbestos exposure) are well established.

Supports eye health and vision

Moderate

Beta-carotene is a provitamin A carotenoid that supports retinal function and may reduce the risk of age-related macular degeneration when consumed as part of a carotenoid-rich diet.

Particularly relevant for: general · older adults

ods2019 · NIH Office of Dietary Supplements: Vitamin A Fact Sheet linuspauling2023 · Linus Pauling Institute: Micronutrient Information Center - Beta-Carotene examine2024 · Examine.com: Beta-Carotene

Antioxidant protection

Moderate

Acts as an antioxidant, neutralizing reactive oxygen species and contributing to cellular protection against oxidative stress when obtained from food sources.

Particularly relevant for: general

examine2024 · Examine.com: Beta-Carotene linuspauling2023 · Linus Pauling Institute: Micronutrient Information Center - Beta-Carotene pubmed2013 · Beta-carotene, cancer and vitamin A supplementation: a review.

Supports immune function

Moderate

By converting to vitamin A, beta-carotene contributes to healthy mucous membranes and immune responses, lowering the risk of deficiency-related infections.

Particularly relevant for: general

ods2019 · NIH Office of Dietary Supplements: Vitamin A Fact Sheet msdmanual2024 · MSD Manual: Carotenoids

Supports skin health and photoprotection

Limited

Beta-carotene may offer modest protection against UV-induced skin damage and supports skin health, but is not a replacement for sunscreen.

Particularly relevant for: general

examine2024 · Examine.com: Beta-Carotene linuspauling2023 · Linus Pauling Institute: Micronutrient Information Center - Beta-Carotene

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Beta-carotene is generally safe from food sources, but high-dose supplements increase cancer risk in smokers and high-risk groups.

warning notices

Supplementation is not advised for smokers or those exposed to asbestos due to increased risk of lung and other cancers.
Excessive intake from supplements can cause carotenemia (yellowing of skin), reversible and harmless, but not a toxicity marker.
High-dose supplements are not recommended in pregnancy without clinician guidance.
Avoid beta-carotene supplementation if you smoke, have smoked, or have asbestos exposure due to increased cancer risk.
Use only with clinician supervision if pregnant or breastfeeding, as safety at high doses is not established.
Monitor liver function when taking high-dose supplements, especially if you have liver disease or use hepatotoxic medications.

Known interactions with medications

Cholestyramine
Orlistat

Contraindications / special precautions

Current or former smokers
Asbestos-exposed individuals
Liver disease or impaired fat absorption

interactions

Important interactions between active ingredient ↔ supplement / medication / food

Beta-carotene supplements can interact with certain medications and other antioxidants; most relevant is reduced safety in smokers and those with asbestos exposure.