Evidence supporting the use of: Blueberry
For the health condition: Free Radical Damage

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Blueberries are widely recognized for their high content of antioxidants, particularly anthocyanins, flavonoids, and vitamin C. Scientific studies have demonstrated that these compounds can neutralize free radicals—unstable molecules that can damage cells and contribute to aging and diseases such as cancer and cardiovascular disease. Multiple in vitro and in vivo studies have shown that blueberry extracts reduce oxidative stress by scavenging free radicals, decreasing lipid peroxidation, and enhancing endogenous antioxidant enzyme activities (such as superoxide dismutase and catalase).

Clinical trials in humans, though still limited in number, indicate that regular consumption of blueberries can increase antioxidant capacity in the blood and reduce markers of oxidative DNA damage. For example, a randomized controlled trial published in the Journal of Nutrition found that daily blueberry supplementation significantly improved plasma antioxidant status and reduced oxidative DNA damage in healthy adults.

Given the strong body of laboratory and emerging clinical evidence, the use of blueberries to support the body’s defense against free radical damage is scientifically justified. However, while the evidence is robust in terms of biochemical markers, more large-scale and long-term human studies are needed to confirm direct clinical benefits. Overall, the evidence supports a rating of 4 out of 5 for blueberries' use against free radical damage.

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Other ingredients used for Free Radical Damage

7-hydroxymatairesinol (HMR)
acai berry
acetyl l-carnitine
alpha-carotene
alpha-glycosyl isoquercitrin
amino acids
anthocyanins
apricot
ascorbyl palmitate
astaxanthin
astragalus
basil
berry flavor
beta-carotene
beta-tocopherol
bilberry
black currant
black garlic
black tea
blackberry
blueberry
broccoli
brussel sprouts
caffeine
camu camu
catalase
catechins
caterpillar mushroom
cauliflower
chokeberry
chrysin
coconut milk
coenzyme Q10 (CoQ10)
coffee fruit
cryptoxanthin
turmeric
delta-tocopherol
epigallocatechin gallate (EGCG)
fish protein
flavonols
fruit blend (proprietary)
ginseng
grape
green tea
greens blend (proprietary)
guarana
hesperetin
hesperidin
HMR lignan
l-carnosine
l-cysteine
l-glutathione
l-glycine
lentinula edodes mycelia
lutein
matcha
melatonin
mixed carotenoids
n-acetyl-cysteine (NAC)
nicotinamide riboside
omega-3 fatty acids
oyster mushroom
phenolic acids
phospholipids
pine bark
pyrroloquinoline disodium salt
quercetin
raspberry
reishi mushroom
resveratrol
selenium
spirulina
strawberry
ubiquinol
vegetable blend (proprietary)
vitamin C
vitamin E
whey protein
zinc
papaya
bee pollen
lingzhi
ferulic acid
cistanche
ganoderma
royal jelly
polyphenols
fulvic acid
wheat germ
goji berry
algae
cocoa
1,2-di-galloyl-4,6hexahydroxydiphenoyl-D-glucose
3,3'-dihydroxy-B-carotene-4,4'-dione
3-Isomangostin
5,7-Dimethoxyflavone
7,4-Dimethoxyflavone
Amethoflavone
Ankaflavin
Apigenin
Aronia melanocarpa
Auricularia
Autumn Olive
Antirrhinin
Avocado
Amentoflavone
Acacetin
Allophycocyanin
Alpha-Lipoic Acid
Ascorbigen
Astragaloside
anthocyanidins
Algal protein
Acer Truncatum bunge
anthocyanosides
Argan nut oil
Apocarotenal
Apocynin
Arctiin
Arjunolic acid
Beta-hydroxybutyrate
beta-zeacarotene
Brassica
Bok Choy
Baccosides
BHT (Butylated Hydroxytoluene)
Benfotiamine
Basidiomycota
Betanin
berry
Brazil nut
boysenberry
BHA (butylated hydroxyanisole)
Bioflavonoids
bacoside
Baicalin
Caffeic Acid
Camellia sinensis
Carnosine
Chebulic acid
Cashew
Cichoric acid
Chocolate
Capsorubin
Carnosol
Cupric ascorbate
C-Phycocyanin
Carotene (unspecified)
Chebulinic acid
Crocetin
Canthaxanthin
Crypthecodinium
Capsanthin
Carnosic acid
Dunaliella salina
Dismutase
Delphinidin
Dunaliella
Dehydroascorbic acid
Dumontiaceae
Desoxyrhaponticin
Dragon Fruit
Dibenzo-alpha pyrones
Dihydrolipoic Acid
Diosmetin
Ellagic Acid
Emblicanin
Ecklonia
walnut