Last verified: 20 days ago
Beta Carotene
Also known as: β-carotene, provitamin A, carotenoid, trans-beta-carotene
Evidence under review. — Not yet rated
Plant pigment and vitamin A precursor. Supplements raise blood levels, but health benefits beyond nutrition are unclear.
-
What it does
Beta carotene is an orange-red pigment found in plants that your body converts into vitamin A. Taking it in a daily multivitamin can significantly raise blood carotenoid levels — one large trial...
-
Evidence quality
Evidence base hasn't been formally rated yet. See research below.
-
Clinical dose
No established dose from provided studies
-
Found in
Thorne Basic Nutrients 2/Day, Baby & Me 2 by MegaFood, Dose & Co Pure Collagen Peptides Peach and 1 more
What the Science Says
Beta carotene is an orange-red pigment found in plants that your body converts into vitamin A. Taking it in a daily multivitamin can significantly raise blood carotenoid levels — one large trial in older adults found nearly a 47% increase in serum beta carotene over two years. Some observational data suggests it may play a role in liver health and reducing inflammation as part of a healthy diet, but direct cause-and-effect benefits from supplementation alone are not well established by the provided studies.
What It Doesn't Do
Won't reliably improve diabetes control on its own. A food voucher study found no meaningful change in blood beta carotene levels even when people ate more fruits and vegetables. No evidence from these studies that it prevents cancer, boosts immunity, or improves skin on its own. Don't assume eating more vegetables automatically raises your blood levels — the provided studies show this relationship is inconsistent.
Evidence-Based Benefits
Beta carotene is an orange-red pigment found in plants that your body converts into vitamin A. Taking it in a daily multivitamin can significantly raise blood carotenoid levels — one large trial in older adults found nearly a 47% increase in serum beta carotene over two years. Some observational data suggests it may play a role in liver health and reducing inflammation as part of a healthy diet, but direct cause-and-effect benefits from supplementation alone are not well established by the provided studies.
Weak EvidenceEffective at: No established dose from provided studies
Source: auto-research
Absorption & Bioavailability
Moderate — blood levels do rise with supplementation (multivitamin form showed ~47% increase over 2 years), but dietary intake alone did not reliably raise serum levels in one food voucher trial, suggesting absorption varies significantly by form and food matrix.
Red Flags to Watch For
- High-dose beta carotene supplements are associated with increased lung cancer risk in smokers — a well-known safety concern not addressed in these studies but critical for consumers to know
- Raising dietary fruit and vegetable intake does not guarantee increased blood beta carotene levels, as shown in the food voucher trial
- Most provided studies used beta carotene as one component of a multi-ingredient formula, making it impossible to isolate its specific effects
- Animal and microbial production studies in this dataset do not translate to human health benefits
Products Containing Beta Carotene
See how Beta Carotene is used in these analyzed products:
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-02