People should eat a balanced diets
which contains some of all the
different kinds of nutrients:
Carbohydrates
Fats
Protein
vitamins
Minerals
If your diet isn't
balanced, you may
become malnourished:
become too thin or too
fat, or suffer from
deficiency diseases
To lose body mass people may
go on a slimming diet where
they eat less. Exercising more
helps. These both lead to more
energy being used up than
being taken in and the body is
forced to use up stored fat for
energy.
Metabolic rate is the rate
at which chemical
reactions take place
inside your cells.
The greater the
proportion of
muscle to fat in
the body, the
higher the
metabolic rate is
likely to be. It also
increases during
exercise.
Metabolic rate can be
affected by genes, which you
inherit from your parents.
Fatty Foods
One gram of
fat releases
twice as much
energy as one
gram of
carbohydrate,
or one gram
of protein.
Proteins are not
usually a major
source of energy for
the body because
they are used for the
more important
functions of growth
and repair.