Evidence supporting the use of: Vitamin A
For the body system: Brain

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Vitamin A is an essential micronutrient primarily known for its role in vision, immune function, and cellular growth. Its use to support the brain and nervous system is based on scientific evidence, although the strength of this evidence for direct cognitive or neurological benefits in healthy individuals is modest. Vitamin A is crucial for normal brain development, especially during fetal and early postnatal periods. Retinoic acid, a metabolite of vitamin A, regulates gene expression involved in neuronal differentiation, synaptic plasticity, and neurogenesis. Animal studies have shown that vitamin A deficiency can impair learning, memory, and synaptic function. In particular, retinoic acid signaling is important for hippocampal function, a brain region critical for memory formation. However, in human studies, the evidence that vitamin A supplementation directly enhances cognition or neurological health in the general population is limited. Severe deficiency can lead to neurological symptoms, but this is rare in developed countries. Most research supports vitamin A's role in brain health as part of overall nutritional status, rather than as a targeted cognitive enhancer. Thus, while there is a scientific basis for vitamin A being important for the brain, its use specifically to "support the brain body system" beyond preventing deficiency is not strongly validated.

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3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid
5-Hydroxytryptophan (5-HTP)
5-methyltetrahydrofolate glucosamine
7,14-Hydroxy-Docosapentaenoic Acid
7,8-Dihydroxyflavone
Acetyl L-carnitine
Acetyl-L-Tyrosine
Acetylcholine
Adenosine triphosphate (ATP)
Agarwood
Agmatine
Albizia
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algal oil
Algal protein
Almond fruit
Alpha glyceryl
Alpha lactalbumin
alpha-linolenic acid (ALA)
alpha-lipoic acid
alpha-pinene
amino acids
AMP-activated protein kinase (AMPK)
anamu
anchovies
Angelica
animal protein
aniracetam
anserine
anthocyanidins
anthocyanins
anthocyanosides
antler
apigenin
apocynin
apple
arachidonic acid
arginine creatine
Arginine silicate
ashitaba
ashwagandha
asiaticoside
astaxanthin
Asteraceae
astragaloside
avocado
baccosides
Bacopa
Bacopin
bacoside
baicalein
baicalin
Baikal Skullcap
banana
Basidiomycota
basil
BCAA
bee pollen
bee products
beef
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belleric myrobalan
benfotiamine
bergamot
berry
beta caryophyllene
beta phenethylalamine
beta-hydroxybutyrate
betony
bilobalide
biopterin
bird\'s nest
black cumin
black currant
black galingale
black garlic
black ginger
black pepper
black seed
black tea
blackberry
blubber oil
Blue-Green Alage
blueberry
bone marrow
borage
borneol
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bovine liver
brahmi
branched-chain amino acids
Brazil nut
breadnut
broad bean
broccoli
Brussel sprouts
butylphthalide
bасора
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cactus
caffeine
calamari oil
calamus
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cannabigerol
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carnosol
caryophyllene
cassia bark
catalpol
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caterpillar mushroom
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centrophenoxine
chaga mushroom
chamomile
cherry
chia seed
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chrysanthemum
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cistanche
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cod liver oil
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coffee fruit
cola nut
colostrum
Convolvulus pluricaulis
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copper
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currant
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cytidine
cytisine
d-alpha tocopherol
D-phenylalanine
damiana
danshen
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deanol
decursin
deer velvet
dehydroascorbic acid
Dendrobium
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DHEA (dehydroepiandrosterone)
diallyl disulfide (DADS)
diallyl trisulfide (DATS)
dibenzo-alpha pyrones
dihydrolipoic acid
dihydromyricetin
dismutase
DMPX
docosahexaenoic Acid
dopamine
DPA (docosapentaenoic acid)
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eicosapentaenoic acid
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eleuthero
elk antler
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fat liver oil
fatty acids
fava bean
ferritin
feverfew
fibroblast growth factor
Ficus religiosa
fisetin
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fish oil
fish protein
Flammulina velutipes
flavanols
flavans
flavin mononucleotide
flavoglycosides
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flavonones
fo-ti
folate
folic acid
folinic acid
frankincense
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fucosterol
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galantamine
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ginkgoheteroside
ginkgolides
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glycerophosphocholine (GPC)
Glycine
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green tea
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hemp
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hyperforin
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inositol
iridoids
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jasmine
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jujube
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Kaempferol
kale
kanna
kava
kavalactones
ketone salts
knotweed
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krill oil
kuding tea
kudzu
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l-carnitine
L-carnosine
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lactalbumin
lactium casein decapeptide
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lemon balm
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Ligustrazin
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linden
lingzhi
linoleic acid (LA)
lion's mane
lipids
liquid liver fractions
long pepper
longan
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lutein
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macamides
mace
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mandrake
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protein
pu-er tea
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pyrroloquinoline quinone
quercetin
quinoa
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resveratrol
rhizome
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rosavins
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rosemary
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rosmarinic acid
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sceletium
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seaweed
selenium
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sesame
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silk tree
skullcap
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soybean
spearmint leaf
specialized pro-resolving mediators (SPMs)
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spinach
spirulina
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strawberry
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sulforaphane glucosinolate
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terpene lactones
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Theacrine
Thiamin (vitamin B1)
Threonic acid
thyme
Thymoquinone
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tocotrienols
Tongkat ali
trace minerals
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Tremella
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Trichilia catigua
Trichopus zeylanicus
Triphala
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turmeric
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ubiquinol
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Uridine
Urolithin A
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Valerian root
vegetable and fruit blend (proprietary)
Vegetable Protein
velvet bean
Verbena
Vervain
Vetiver
Vinburnine
Vincamine
Vine tea
Vinpocetine
vitamin A
vitamin B
vitamin B12
vitamin B6
vitamin C
vitamin D
vitamin D3
vitamin E
Vitexin
Walnut
Waterhyssop
wheat germ
Whey protein
White Tea
Willow
Withanolides
Wogonin
Wood betony
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Xylaria nigripes
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