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
target intake of resistant starch:
5g/meal (incorporate pulses)
why supplement with prebiotics
promote growth of specific members of resident gut microbiota, stim CSFA production, reduce pH and help pathogen exclusion
live micro-organisms that when administered in adequate amounts, confer a health benefit on the host
probiotics
5 factors of classification of probiotics?
human origin, safe, survival, colonize, health benefit
live active culture vs probiotic?
strain specificity, proven health benefit, regulate term, patented strains (live active culture less strict definition)
products that contain both prebiotics and probiotics are called:
synbiotics
important factors of probiotic supplements?
strain, dose, product
probiotics are associated with reduction in ___
antibiotic associated diarrhea
how to take probiotics to prevent AAD?
take within 48 hours of taking antibiotic, then space out within 2 hour intervals, continue until 2 weeks after discontinuing antibiotics
probiotics administered in addition to ____ result in clear reductions in duration and severity of diarrhea in infants/children
rehydration therapy
probiotics should not be used in these populations
central venous catheters, artificial heart valves, low WBC count, short bowel syndrome, HIV pt, transplant pt, autoimmune disorders, extremely low birth weight infants, milk allergy
key messages to recommend to client to enhance gut microbiome?
varied diet lots of fruit and veg, include plant proteins, probiotics yogurt /fermented foods, probiotic supplements, exercise, reduce processed foods, fibre (resistance starch, prebiotic)
gut brain connection influenced in part by the production of ___ in the gut
serotonin
oils that are good for microbiome?
olive
this condition they don’t produce mucus in GI (inflammatory response)
ulcerative colitis
these foods aggravate colitis
milk fat and corn oil