Condiciones de salud que arándano puede ayudar a apoyar.
Bilberry (Vaccinium myrtillus) is exceptionally rich in anthocyanins—particularly delphinidins and cyanidins—which are well-documented antioxidant compounds. Preclinical and in vitro evidence consistently shows these anthocyanins scavenge reactive oxygen species (ROS), inhibit lipid peroxidation, and upregulate endogenous antioxidant enzymes such as superoxide dismutase (SOD), catalase, and glutathione. Human clinical evidence is more limited and mixed, with at least one controlled trial finding no significant change in oxidative stress biomarkers, though a 2025 narrative review of human and lab studies supports moderate antioxidant benefits at 80–320 mg/day of anthocyanin-rich extracts. The evidence base is stronger at the mechanistic and preclinical level than at the clinical level.
Bilberry (Vaccinium myrtillus) is exceptionally rich in anthocyanins including delphinidin, malvidin, and cyanidin glycosides with documented endothelial-protective effects. A JAMA Internal Medicine RCT showed bilberry and blackcurrant anthocyanins (320 mg/day, 16 weeks) improved FMD and reduced VCAM-1 in obese subjects. Life Extension's cardiovascular protocol cited bilberry among anti-atherogenic berry polyphenols.
Bilberry has documented antiplatelet and anticoagulant-potentiating properties. It inhibits platelet aggregation and may increase prothrombin time and partial thromboplastin time. These effects are clinically significant enough that Memorial Sloan Kettering and Drugs.com warn of potential bleeding interactions with anticoagulant and antiplatelet medications.
A double-blind, placebo-controlled crossover RCT (PRECISE study) found that 12-week supplementation with bilberry plus grape seed extract decreased ambulatory systolic and diastolic blood pressure by 4.7 and 2.3 mmHg respectively. A single-blind RCT also showed bilberry consumption reduced systolic blood pressure in subjects with cardiovascular risk factors.
Both bilberry fruit and leaf preparations have been studied for glycemic effects in human trials. A clinical study demonstrated that a standardized bilberry extract (36% anthocyanins) reduced postprandial glycemia and insulin in type 2 diabetes patients. A systematic review found bilberry and blackcurrant extract lowered HbA1c, particularly in older Chinese T2DM subjects in longer-term studies. Overall evidence is promising but not yet conclusive.
Clinical studies show bilberry/blackcurrant anthocyanin supplementation can reduce total and LDL cholesterol and increase HDL in subjects with hypercholesterolemia, metabolic syndrome, or T2DM. Results are inconsistent across trials; a 52-participant RCT with isolated bilberry anthocyanins found no lipid effects at 28 days.
Bilberry anthocyanins modulate key inflammatory pathways including NF-κB, TNF-α, IL-6, and IL-1β in both preclinical and human studies. Clinical trials in metabolic disorders and UC patients show reductions in inflammatory markers with bilberry supplementation. A 2022 PMC review concluded bilberry may be useful in the prevention and treatment of chronic inflammatory disorders.
Bilberry (Vaccinium myrtillus) is rich in anthocyanins, which have been shown to improve microcirculation, strengthen capillary walls, reduce capillary fragility, and support venous health in clinical trials. Studies report benefits in chronic venous insufficiency and diabetic retinopathy, both conditions of compromised vascular function. Bilberry anthocyanins have antioxidant and vasoprotective effects on endothelial cells.
An open prospective pilot trial in 13 UC patients treated with anthocyanin-rich bilberry for 6 weeks achieved remission in 63.4% and response in 90.9%, with significant reductions in endoscopic and biochemical disease activity. A follow-up molecular study confirmed reduced IFN-γ and TNF-α in colon biopsies of responders. Evidence is preliminary but is the first human data.
Bilberry anthocyanosides cross-link collagen fibers, inhibit enzymatic and non-enzymatic collagen degradation, and protect collagen from free-radical damage in vitro. These mechanisms underpin traditional and clinical use for conditions involving connective tissue integrity. Human clinical evidence is mostly indirect, via vascular and capillary endpoints.
Bilberry (Vaccinium myrtillus) anthocyanins have been studied in clinical RCTs for dry eye, with a 3-month pilot RCT (n=24, 600 mg bilberry + fish oil) showing improvements in OSDI, NITBUT, tear secretion, and meibomian gland openings. A separate RCT found 160 mg bilberry extract for 4 weeks improved tear volume by Schirmer test. Anti-inflammatory and vasoprotective anthocyanins reduce oxidative stress on the ocular surface.
Bilberry (Vaccinium myrtillus) anthocyanins have been studied in multiple RCTs for VDT-induced eye fatigue. A 2015 PubMed-indexed RCT (n=281 office workers, 480 mg/day bilberry extract, 8 weeks) evaluated critical flicker fusion, near point accommodation, and subjective eye fatigue symptoms. A 2020 PMC-published RCT (n=109, 240 mg/day standardized bilberry extract, 12 weeks) demonstrated improvement in ciliary muscle tonic accommodation after VDT tasks. Anthocyanins may penetrate to the ciliary muscle and relieve tension.
Bilberry (Vaccinium myrtillus) is rich in anthocyanosides that enhance rhodopsin regeneration in retinal rod cells and support retinal microcirculation and antioxidant defense. A 2015 Japanese RCT (n=88) found 480 mg/day bilberry extract significantly reduced eye fatigue and improved visual accommodation in VDT workers. A 2017 RCT found standardized bilberry extract (Mirtoselect®) improved dry eye symptoms.
Bilberry anthocyanins are extensively studied for glaucoma and ocular vascular health. Clinical evidence shows bilberry extract reduces intraocular pressure, increases ocular blood flow, and improves visual field outcomes. It is commonly combined with pine bark extract (as Mirtogenol) in clinical trials demonstrating IOP reduction in ocular hypertensive patients.
Bilberry's anthocyanins are potent antioxidants that combat free-radical-associated tissue damage linked to aging. A 2024 RCT found fermented bilberry extract significantly improved skin firmness, wrinkle depth, skin elasticity, and antioxidant capacity over 84 days. A clinical trial in aged men also showed reductions in plasma inflammation and tissue damage biomarkers.
Bilberry (Vaccinium myrtillus) is rich in anthocyanosides that protect retinal capillaries and ocular tissues from oxidative stress relevant to age-related vision decline. Small clinical studies report improvements in visual acuity and contrast sensitivity in AMD patients, and prevention of lens and retinal impairments. Traditional use in European herbal medicine for eye conditions dates back centuries.
Clinical trials show bilberry supplementation improves exercise capacity, reduces oxidized LDL, and beneficially modulates cardiovascular risk factors including HDL cholesterol and endothelial function. An open-label RCT post-myocardial infarction found significant improvements in 6-minute walk test distance and oxidized LDL. Larger confirmatory trials are ongoing.
Human pilot clinical data show that anthocyanin-rich bilberry preparation significantly reduced disease activity, fecal calprotectin, and mucosal inflammation in mild-to-moderate UC over 6 weeks. Molecular studies confirm modulation of NF-κB, IFN-γ, and TNF-α signaling in colonic tissue of treated patients. Evidence is preliminary but derives from human clinical data.
Bilberry anthocyanins activate AMPK in key insulin-sensitive tissues (adipose, muscle, liver), upregulate GLUT4, and suppress hepatic glucose output in animal models. Human clinical data include a crossover trial showing reduced postprandial glucose and insulin in T2DM. Long-term HbA1c improvements have been reported in systematic review data for certain populations.
Bilberry (Vaccinium myrtillus) is rich in anthocyanins with potent antioxidant, anti-inflammatory, and vascular-protective properties. Animal studies (OXYS rat model) demonstrated bilberry extract prevented macular degeneration and cataracts. A 2024 PMC review confirmed preclinical evidence that bilberry anthocyanins improve retinal health by reducing oxidative stress and inflammation relevant to AMD progression, though large-scale human RCTs are limited.
Bilberry supplementation has been studied across multiple components of metabolic syndrome including hyperglycemia, dyslipidemia, hypertension, inflammation, and oxidative stress. A systematic review found bilberry/blackcurrant improved HbA1c and cholesterol in subjects with metabolic syndrome. Its anthocyanins address several simultaneous metabolic syndrome risk factors.
A 2024 double-blind, placebo-controlled RCT demonstrated that fermented bilberry extract taken orally for 84 days significantly improved skin firmness, elasticity, wrinkle depth, and skin antioxidant capacity. Anthocyanosides also stabilize and stimulate collagen synthesis in vitro. This is the first robust human trial specifically targeting skin structural outcomes.
Bilberry (Vaccinium myrtillus) is traditionally and scientifically used for vascular conditions including spider veins and varicose veins. Its anthocyanins have documented direct vasoactive and vasoprotective properties in peer-reviewed research. Bilberry anthocyanins strengthen capillary walls and reduce vascular permeability relevant to telangiectasias.
Some human intervention studies report reductions in blood triglycerides with bilberry or bilberry/blackcurrant anthocyanin supplementation, particularly in subjects with dyslipidemia or metabolic syndrome. Results are inconsistent across trials, with a 52-participant double-blind RCT finding no significant triglyceride change with isolated bilberry anthocyanins over 28 days.
Bilberry (Vaccinium myrtillus) contains anthocyanosides and proanthocyanidins that, due to their similarity to OPCs from grape seed and pine bark, have been recommended for varicose veins. Its anthocyanosides have demonstrated vasoactive and vasoprotective properties (Bell & Gochenaur 2006) and collagen-stabilizing actions relevant to vessel wall integrity. It is included in EBSCO's evidence summary for varicose vein–associated conditions, though robust dedicated CVI clinical trials are limited.
Bilberry (Vaccinium myrtillus) has traditional use in European medicine for diarrhea, attributed to its high tannin content and astringent properties. NIH/LiverTox notes that in traditional medicine, bilberry was used to treat diarrhea and gastrointestinal complaints. Scientific clinical evidence for bilberry specifically for diarrhea is limited.
Bilberry (Vaccinium myrtillus) has a long history of traditional use in European herbal medicine for vascular conditions including hemorrhoids. Rich in anthocyanins, it is listed by EBSCO Research Starters as a principal proposed natural treatment for hemorrhoids. It was incorporated in a 2021 PMC retrospective study compound that achieved 89.8% grade reduction in hemorrhoid severity.
Bilberry has a documented European traditional use for gut inflammation, diarrhea, and gastrointestinal upset that encompasses symptoms overlapping with IBS. The tannin content is considered relevant to bowel-regulating effects. No specific controlled clinical trials in IBS populations have been identified.
Bilberry (Vaccinium myrtillus) has a long traditional association with night vision improvement, famously linked to WWII British Royal Air Force pilots who consumed bilberry jam before night raids. Its anthocyanosides were proposed to accelerate rhodopsin regeneration. However, a systematic review of 12 placebo-controlled trials found that the most rigorous RCTs did not support benefit for night vision in subjects with normal eyesight.
Bilberry (Vaccinium myrtillus) contains anthocyanosides proposed to strengthen nasal capillaries by protecting collagen, offering a rationale for reducing recurrent nosebleeds due to capillary fragility. Complementary medicine references list it among proposed natural treatments for epistaxis, though no clinical trials have directly evaluated it for this indication.