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Diet and Nutrition for Health and SportEDGU1003Lecturer: Thea Werkhoven
Today’s Lecture Topics•Common nutrition myths that are perpetuated by old wives’ tales and by the media.•Are they true or are they false?•Why?•Exam nutrition, what is important to have and to avoid.•Nutrition for studying. •Caffeine•How much caffeine is ok and what foods is it found in?
Today’s lecture outcomesMyths/Truths•Debunk some myths. •Understand what nutrients are important in brain function and cognition. •Apply this to periods of study and when focus is required. Caffeine and study nutrition•Be familiar with dietary sources of caffeine and the effect that ingesting it can have. •What is a safe limit for caffeine each day?•What happens if this safe limit is exceeded?
Which myths persist?•Fat makes you fat•Meat rots in your guts•The Aussie BBQ will give you cancer•Protein is as unhealthy as smoking•Milk gives you mucous•Eating carbs after 6pm makes you fat•Oil is carcinogenic•Sugar is addictive as cocaine
“A common misconception that is uncritically passed on as established truth by experts and non-experts alike.”A food myth often contains some element of truth!
Where do myths come from? •Everyone has an opinion on what we should eat •Early reporting of research before it’s peer- reviewed or been repeated (often later contradicted or overturned) •Vested interests pushing the virtues of their own product •Selective reporting by the media and/or researchers •The experts disagree – and it’s reported in the media!
Type of nutrition myths1.Food has a negative effect on health/weight/heart disease 2.Food should be restricted by specific groups 3.Food loses its nutritional value due to processing 4.Certain foods are associated with a given time
Myths can do harm “Food and nutrition misinformation can have harmful effects on the health, well-being and economic status of consumers.” ADA Position, April 2006 •Many myths reflect the unease consumer feel about the modern food supply. •Breeds specific dietary habits, spending and ‘chinese whispers’•Can tarnish reputations of companies and products•Also can work in the opposite way, make a boom in fad products.
“You shouldn’t eat carbs after 6pm”
No carbohydrates after 6pm •If you eat carbs at night, your body wont be able to “burn them off”.•Started by body builders in the gym wanting to “shred” before a comp.•It’s a way of cutting kilojoules without too much suffering.
No carbohydrates after 6pm •Carbs cannot tell the time!