Condiciones de salud que beta-caroteno puede ayudar a apoyar.
Beta-carotene is a well-characterized fat-soluble antioxidant that quenches singlet oxygen and scavenges reactive oxygen species (ROS) including superoxide anion and hydroxyl radicals. Human clinical studies confirm it raises plasma antioxidant capacity and reduces biomarkers of oxidative stress such as lipid peroxidation products. However, in vivo antioxidant efficacy is context-dependent, and high-dose supplementation shows a nuanced risk/benefit profile, particularly in smokers.
Beta-carotene is a pro-vitamin A carotenoid that functions as an antioxidant in arterial walls, protecting LDL from oxidation and supporting endothelial function. The 2024 PMC vascular review listed beta-carotene (as part of antioxidant vitamins) among compounds with valuable effects on vascular endothelial function. However, supplemental high-dose beta-carotene in smokers has shown harmful effects.
A Bayesian meta-analysis of five studies (n=12,521) found dietary beta-carotene associated with reduced loss of bone mineral density (RR 0.89; 95% CrI 0.77–0.99). Postmenopausal women show the most consistent positive associations between beta-carotene intake and lumbar spine bone mass. Preclinical work demonstrates beta-carotene inhibits osteoclastogenesis via suppression of the NF-κB/RANKL signaling pathway.
Beta-carotene is a normal, documented component of human colostrum and mature breast milk, contributing antioxidant defenses to the neonate. Maternal supplementation reliably raises breast milk beta-carotene concentrations, and a systematic review confirmed breastfed infants have higher blood carotenoid levels than formula-fed infants. Some evidence links breast milk beta-carotene to infant motor development.
Beta-carotene, a provitamin A carotenoid, is consistently found at lower levels in women with cervical dysplasia and cancer. Observational studies associate higher carotenoid intake with lower CIN risk. However, multiple RCTs have not demonstrated significant regression of established CIN with beta-carotene supplementation, and in one trial, regression rates were slightly (non-significantly) lower in the beta-carotene group for HPV-positive women.
Beta-Carotene is a provitamin A carotenoid included in children's MVMs as a safer alternative to preformed retinol. NIH ODS and the Linus Pauling Institute recommend children's MVMs contain at least 50% of their vitamin A content as beta-carotene. It is a standard ingredient in commercially marketed children's multivitamins documented in NIH ODS-funded label surveys.
Beta-carotene exerts anti-inflammatory effects via inhibition of NF-κB, AP-1, STAT3, and MAPK signaling pathways, reducing pro-inflammatory cytokines including TNF-α and IL-1β. Observational data link higher dietary carotenoid intake with lower circulating inflammatory markers. Lower plasma beta-carotene is consistently found in obese and inflammatory disease states.
Long-term beta-carotene supplementation (average 18 years in the Physicians' Health Study) was associated with significantly better cognitive performance and verbal memory in men versus placebo. Cross-sectional NHANES data confirm higher dietary beta-carotene is associated with lower risk of cognitive decline on multiple standardized tests. Duration of exposure appears critical, with short-term supplementation showing no benefit.
Beta-carotene is a provitamin A carotenoid converted to vitamin A in the body, supporting retinal rhodopsin synthesis and helping prevent night blindness and dry eyes. The original AREDS trial included beta-carotene in its antioxidant formula, which reduced AMD progression by 25%. It has since been replaced in the updated AREDS2 formulation by lutein and zeaxanthin for most individuals.
Beta-carotene is a provitamin A carotenoid and antioxidant widely associated with healthy aging in epidemiological and mechanistic studies. Higher serum beta-carotene is associated with longer telomere length, reduced oxidative stress, and lower all-cause mortality in NHANES analyses. The PNAS longevity vitamins paper identifies beta-carotene among longevity-relevant carotenoids.
Beta-carotene serves as the principal dietary provitamin A source, and vitamin A is essential for normal growth, cell differentiation, and development in children. A randomized controlled trial in Chinese children confirmed beta-carotene supplementation corrects vitamin A deficiency as effectively as retinol supplementation. WHO and UNICEF recognize beta-carotene-rich foods as critical for child development in vitamin A-deficient populations.
Beta-carotene, a provitamin A carotenoid with antioxidant properties, was part of the original AREDS1 formulation (15 mg/day) proven to reduce AMD progression risk by ~25% in an NIH randomized trial. It has also been associated with reduced cataract risk in observational studies. It was replaced by lutein/zeaxanthin in AREDS2 due to lung cancer risk in smokers.
Beta-carotene has a well-characterized and clinically important relationship with lung health, primarily demonstrated through the ATBC and CARET trials showing high-dose supplementation (20–30 mg/day) significantly increased lung cancer incidence and total mortality in smokers and asbestos-exposed individuals. Early observational evidence had suggested a protective association between dietary beta-carotene and lung cancer risk, but RCT evidence reversed this expectation in high-risk populations.
Beta-carotene (15 mg/day) was one of the four original AREDS formula components tested in the landmark RCT of 3,640 AMD patients, which showed a combined ~25% reduction in progression to advanced AMD. However, AREDS2 found lutein/zeaxanthin to be a safer and equally effective substitute, particularly because beta-carotene increases lung cancer risk in smokers. Beta-carotene is no longer the preferred carotenoid for AMD supplementation but has direct AREDS evidence.
Beta-carotene is a provitamin A carotenoid that the body converts to vitamin A (retinol), which is required for rhodopsin synthesis and night vision. It can reduce night blindness in vitamin A–deficient populations, though it is less potent than preformed vitamin A. Supplementation in deficient pregnant women reduced night blindness incidence by approximately 50% in some postpartum periods.
Beta-carotene has been included in antioxidant combination regimens studied in multiple RCTs for chronic pancreatitis pain relief. A systematic review found that the antioxidant cocktail (selenium, beta-carotene, vitamin C, vitamin E, methionine) significantly reduced pain in chronic pancreatitis patients. A 2024 rat study also demonstrated beta-carotene alone reduced oxidative stress markers and inflammatory gene expression in L-arginine-induced acute pancreatitis.
Beta-carotene is the provitamin A carotenoid that serves as a safe precursor to vitamin A supplementation in picky eaters. Vitamin A deficiency is documented in picky eating children who avoid orange/yellow vegetables and dairy. Beta-carotene is preferred over preformed retinol in children's supplements due to its favorable safety profile.
A provitamin A carotenoid and antioxidant, beta-carotene supports post-illness immune recovery by serving as a precursor to vitamin A (essential for mucosal immunity) and directly scavenging singlet oxygen and free radicals generated during infectious inflammation.
Beta-carotene is the provitamin A carotenoid used safely in prenatal supplements as an alternative to preformed retinol, which is teratogenic at high doses. As a regulated precursor to vitamin A, it supports fetal organogenesis, immune function, and vision without teratogenic risk. The NIH ODS specifically notes that the UL for vitamin A during pregnancy does not apply to beta-carotene, making it the preferred prenatal vitamin A source.
Clinical studies demonstrate that oral beta-carotene (15–30 mg/day for 10–12 weeks) provides measurable protection against UV-induced erythema, which is a primary driver of photoaging. Beta-carotene has been shown to improve facial wrinkles and elasticity, increase collagen I mRNA expression, inhibit MMP-9, and reduce UV-induced DNA damage. The degree of photoprotection approximates SPF 4.
Beta-carotene is a provitamin A carotenoid with multiple human trials demonstrating reduced UV-induced skin erythema when taken orally. A meta-analysis showed dietary beta-carotene supplementation is efficacious in protecting skin against UVB-induced erythema. Beta-carotene at 24 mg/day from algal sources was found equivalent in erythema protection to a mix of three carotenoids.
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