Unformatted text preview: t of hunger problems and food shortages in countries that have
trouble growing wheat. WHY ISNUTRITION IMPORTANT?
Nutrition can prevent disease.
a. Diseases caused by nutrient deficiency:
scurvy, goiter, rickets 1:1 relationship
b. Diseases influenced by nutrition:
chronic diseases such as heart disease
c. Diseases in which nutrition plays a role:
osteoarthritis, osteoporosis LS 2N03 – Human Nutrition for Life Sciences
D.M. Pincivero, 2013 What do we know about obesity? It has gone up, it is staying up. NUTRITION AND OBESITY IN CANADA 3
In Canada, US, etc. - there is a big increase in the % of the population that
is characterized as obese and it is consistent across age spectrum. it is
known as an "epidemic". Different from most diseases, as most are
caused by person to person transfer of microorganism. You can't give
someone obesity. The increase in numbers are over a very short time.
Lots of health related and economic
problems caused by obesity. It is
important because of its strain on the
health care system. Why do we eat the way we do?......we’re influenced
1) Physiological hunger Driven by hormones and the nervous system.
We feel sensations of hunger and we seek to alleviate perceptions by eating. It is instinctive. 2) Sensory stimulation Food flavour: Texture: taste and smell We associate pleasurable experiences with eating food.
“feel” of food – crisp, chewy, smooth Studies suggest humans prefer the texture of food rather than the taste.
Ex. Skim Milk vs. 2% - the fat content is very different, 2% is thick, where as skim is like water.
Titanium dioxide used to be added to skim milk to give it texture, but is not healthy to ingest. 3) Personal preferences
Food we select is based upon experiences and what we are raised with and exposed to. Over time as our
perceptions become shaped we form our own experiences we develop personal preferences. 4) Habits: 3 meals/day
There is no scientiﬁc evidence for 3 meals a day. It is just a habit we have developed here in Canada based
on our life style but there is no evidence to suggest that it is how humans are supposed to eat. 5) Ethnic he...
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