microbiome Flashcards
human body has about ___ trillion human cells and ___ trillion microbes
30 ; 39
entire habitat, including the microorgs, their genomes, and the surrounding enviro conditions
microbiome
microbiome ___ is associated with greater overall health and wellbeing
richness
microbiome has biomass of ___
2kg
nutrition roles of microbiota:
SCFAs, vit K, some B vitamins
factors that influence microbiota?
diet, genes, antibiotics, geography, exposures (exercises, intro to solids, C section, formula fed)
why better to have vaginal birth?
exposed to birth canal, swallows vag fluid, bacteria colonizes gut; in c-section, exposed to hospital enviro which is pathogenic and negative health effects
swabbing baby with vag fluid if C section results In ___% colonization
60
first __ years of life critical to the development of microbiome
3
why microbiome in older adults appear pro-inflammatory state with increased potential for DNA damage and immune compromise?
when moved to LTC, diet less diverse so microbiome less varied; tend to be on more meds (ie. antibiotics), reduced stomach acid
why do PPIs cause issues?
reduce acid in stomach–>pathogens that should have been killed are translocating
why pets have positive effect?
more varied microbiota cuz share with pets
pro inflammatory nutrients
omega 6s and saturated fat
^ animal protein (esp red meat) means:
reduced SFCA
examples of prebiotics
inulin, FOS, GOS