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709555
Diet
Description
Biology (B1) Mind Map on Diet, created by tasnimkhan on 02/04/2014.
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b1
biology
biology
b1
Mind Map by
tasnimkhan
, updated more than 1 year ago
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Created by
tasnimkhan
about 10 years ago
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Resource summary
Diet
Balanced diet
diet must provide enough energy
Enough carbohydrates to release energy
Enough fats to keep warm and release energy
protein for growth, cell repair and replacement
fibre for everything to move smoothly through your digestive system
tiny amounts of vitamins and mineral ions to keep skin, bone and blood healthy
Energy needed to fuel chemical reactions in body
Metabollic rate
higher proportion of muscle = higher metabollic rate
the bigger you are the more energy needed to supply your body so higher metabollic rate
excercise boosts metabollic rate as muscle is built up
stays high for a while after excercise
activity levels affect how much energy should be in your diet
Unbalanced diet
excess carbohydrates and fat = obesity
obesity can lead to arthritis, type 2 diabetes, high blood pressure, heart disease and some types of cancer
excessive saturated fat can increase blood cholesterol level
excessive salt can increase blood cholesterol level
people in developing countries suffer malnutrition
malnutrition varies depending on what foods are missing from the diet
malnutrition can lead to slow growth, fatigue, poor resistance to infection & irregular periods
difficiency diseases are caused by lack of vitamins or minerals, eg. vitamin c - scurvy problems with skin joints and gums
Exercise and inherited facters
excercise increases amount of energy used and decreases amount of stored of fat
less likely to suffer from diseases like obesity
and underactive thyroid gland can cause a slow in the metabollic rate and cause obesity
some inherited factors increase blood cholesterol levels which increases risk of heart disease
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