nutrition needs through lifecycle Flashcards
9 water soluble vitamins
thiamine
riboflavin
niacin
B6
folates
B12
ascorbate
pantothenic acid
biotin
7 fat soluble vitamins
retinoids
carotenoids
cholecalciferol
ergocalciferol
tocopherols
phylloquinone
manaquinones
what 3 syntheses are vitamin C involved in
collagen
hormone
neurotransmitters
what is scurvy - symptoms and prevention
clinical manifestation of vit C deficiency
caused by ascorbic acid role in collagen synthesis
10mg of vit C will prevent
symptoms - bleeding of skin and mucous, loose teeth and gingivitis, rough skin, joint and body aches, fatigue/depression, increased susceptibility to infection, muscle weakness
sources of vitamin C
citrus, berries, kiwi, green peppers, broccoli, cabbage, bean sprouts
what does high dose of vit C cause
oxalate stone formation
diarrhoea
6 sources of selenium
brazil nuts
crab
shrimp
kidney
mussels
liver
selenium deficiency
combination with Coxsackievirus infection can lead to Keshan’s disease (cardiomyopathy)
also contributes to Keshan-Beck disease (myocardial necrosis - weakens heart)
needed for conversion of thyroxine into triiodothyronine so deficiency can cause symptoms of hypothyroidism
role of selenium
important antioxidant
component of iodothyronine deiodinases ( enzymes for activation of thyroid hormones)
supports immune function (stimulates neutrophils)
improves fertility
reduces risk of miscarriage
anti-cancer (stabilises DNA)
anti-ageing
selenosis symptoms (selenium poisoning)
D and V
hair and nail loss
lesions of skin and nervous system
selenium toxicity levels
more than 1mg a day is toxic
max 200ug per day
symptoms of dehydration in adults and children
thirst
dark urine
less urination
dizziness
fatigue
dry mouth, lips, or tongue
sunken eyes
symptoms of dehydration in a baby
sunken soft spot on top of their head
sunken eyes
few or no tears when crying
not having many wet nappies
being drowsy or irritable
