Evidence supporting the use of: Vitamin A (retinyl not specified)
For the body system: Reproductive System
Synopsis
Source of validity: Scientific
Rating (out of 5): 4
Vitamin A plays a crucial role in supporting the reproductive system, and its importance is supported by scientific evidence. In both males and females, Vitamin A is essential for normal reproductive function. In females, Vitamin A is important for the regulation of the menstrual cycle, ovarian function, embryonic development, and placental health. In males, Vitamin A is necessary for spermatogenesis—the production and development of sperm. Deficiency in Vitamin A has been associated with impaired fertility, including reduced sperm production and abnormal reproductive tract development in animal studies and human observational data. For example, retinoic acid, the active metabolite of Vitamin A, is required for the differentiation of germ cells and the maintenance of normal epithelial tissues in the reproductive tract.
Evidence for Vitamin A’s role comes from both experimental animal models and human studies. In rodents, Vitamin A deficiency leads to infertility, which can be reversed with supplementation. In humans, while outright deficiency is rare in developed countries, suboptimal status may impact reproductive health. The World Health Organization recognizes Vitamin A as essential for maternal health and fetal development, and supplementation is recommended in populations at risk for deficiency. However, excessive vitamin A intake can be teratogenic, especially in early pregnancy, so supplementation should be carefully monitored.
Overall, the scientific consensus supports the necessity of Vitamin A for proper reproductive system functioning, justifying its inclusion for this purpose.
More about Vitamin A (retinyl not specified)
More about Reproductive System
Other ingredients that support Reproductive System
acetyl l-carnitineamino acids
ashwagandha
beta-sitosterol
black cohosh
bovine
bovine liver
broccoli
calcium
chaste tree
Chinese salvia root
choline
coenzyme Q10 (CoQ10)
turmeric
damiana
DHA (docosahexaeonic acid)
DHEA (dehydroepiandrosterone)
DIM (diindolylmethane)
dong quai root
EPA (eicosapentaenoic acid)
evening primrose oil
fennel
fenugreek
fish protein
flaxseed
folate
gamma linolenic acid (GLA)
ginger
ginseng
gokhru
hops
inositol
iodine
iron
l-5-methyltetrahydrofolate glucosamine salt (5-MTHF)
l-arginine
l-carnitine
lactobacillus crispatus
lactobacillus jensenii
licorice root
lignans
linoleic acid (LA)
maca
magnesium
marine lipid
melatonin
moringa
motherwort
muira puama
omega-3 fatty acids
omega-6 fatty acids
pomegranate
protein
pumpkin
quail egg
raspberry
rehmannia glutinosa
saffron
saw palmetto
selenium
selenium
soybean
spearmint leaf
tongkat ali
tribulus
vitamin A
vitamin B
vitamin D
vitamin E
vitamin E
seaweed
water
wild yam
zinc
sarsaparilla
red clover
suma
squawvine
mugwort
nut grass
anise
punarnava
smilax
chaff flower
lingusticum wallichii
yarrow
cistanche
dioscorea
dodder
eucommia
ganoderma
lotus seed
morinda
royal jelly
Equol (proprietary)
guelder rose
trace minerals
anemarrhena asphodeloides
purslane
barrenwort
shepherd's purse
wood betony
hypothalamus
herbal blend (proprietary)
yohimbe
11-Ketotestosterone
25-d-spirosta-3, 5-diene
5-methyltetrahydrofolate glucosamine
8-Prenylnaringenin
Antler
Arachidonic Acid
Achyranthes
Anamu
Alchemilla
Aletris
Anserina
Aerva lanata
Agrimonia pilosa
Agnuside
Ashoka
Ant
Abuta
Allium tuberosum
Animal protein
Blue Cohosh
Babchi
Baliospermum
Black galingale
Beef
Beef liver
Bugbane
Bulbine natalensis
Black Gram
Banyan
Ba Ji Tian
Barbasco
Bee products
Borassus aethiopum
banana
Boerhavia diffusa
Calochortus
Curculigo orchicides
Cohosh
Clary sage
Chinese Mountain Ant
Cucurbita
Cod Liver Oil
Codonopsis
Cnidium
Clerodendrum phlomidis
Cynomorium
Cyathula
Chinese Pond Turtle
Chlorophytum
Chuchuhuasi
Casticin
Campylandra fimbriata
Catuaba
Costus
Carthamus
Canscora
DHEA
Daidzein
Deer Velvet
Dong Quai
Dibenzo-alpha pyrones
D-Pinitol
Diosgenin
Date
Egg
Euryale seed
Elk antler
Eicosapentaenoic Acid
Embelia
Estrogen
Folic Acid
False Unicorn Root
Isoflavones
Lotus
Orchid
yohimbine
Other body systems supported by Vitamin A (retinyl not specified)
BrainEyes
Gastrointestinal Tract
Immune System
Intestinal System
Lungs
Mucus Membranes
Reproductive System
Respiratory System
Skin
Small Intestines