Diet and Nutrition Flashcards
Nutritional Science
Diet and Health Correlate, but so do diet and lifestyle
Mechanistic/biomedical interventions considered instead of biocultural ones
Epidemiological Solutions
Suspected dietary factors involved with other factors not taken into consideration
e.g Red Wine is good for you, but we haven’t considered your diet
Molecular Biology
Mechanistic models are highly oversimplified
Many studies related to lab rats - How are they related to humans?!
Intervention Studies
Intervention studies vs. Non interventions (i.e butter group vs. olive oil group)
People get anstsy and worried about their diets and start researching and changing their diets and ruin the study
double blind studies and diet/lifestyle don’t work as people know which group they’re in
Publication Bias
Biases derived non academically
Usually occur because of financial and personal interests
met analysis discovers publication biases
PLos Medicine 2007- Scholars funded by the industry had favourable results
Preconceived Ideas
Porfitable foodstuffs are overemphasized
Wheat Fibre, vegetarianism, red meat, soya –> all have certain connotations
Citation Bias
People fall back on well known studies - More influential but not necessarily better
Studies that confirm well known stuff are cited more than contradictors
Drug studies played up more than nutritional studies
Autointoxication
Importance of Fibre began in 1970’s
Virtually no western diseases in their places of study - high fibre diets worsened in women with cardiovascular diseases
People who prefer whole wheat have less cardiovascular disease
Wheat Bran
interferes with vitamin absorption and Decreases iron absorption
Leads to Negative Calcium Balance
Low Fat Diet
study of Mediterranean Population - found that there was a correlation between fat intake and heart disease
US men 100x more at risk of heart disease even though Cretan men eat the same
2010 study showed no correlation between fat intake and heart disease
Omega 3 Buzz
Greenland/inuit rooots - High Fatty Diet
Cochrane - Meta - analysis 2004 found no netbenefit on CVD, mortality or cancer
Sodium
75 Salt in our diets comes from processed food
Potassium sodium ratio
Lots of salt low potassium
Glycemic Index
How fast the body breaks down blood sugar
French Paradox
French consume highest saturated fats in western world yet have the lowest levels of coronary heart disease
Ethanol/alcohol
62% lower at risk of CHDif you don’t drink alcohol
Bipedalism
Sahelanthropus tchadensis
First Divergence from apes 7MYA
Forests shrink - climate change causes apes to move to the ground in search for food
Less energy to walk bipedal than knuckle walk