Factors for Obesity in teens

The Family
Often children and teens are more at risk of
becoming overweight if they have two overweight
parents. Although in some cases, this may be due
to a powerful genetic factor, or it may be because
they are modeling themselves after what they see
their parents eating. Also physical activities, if
any, they take part in, can indirectly affect the
teen.
In Activity
On average, an American child will spend several
hours each day watching television or on a
computer. Compare this to years ago, when this time
would have been spent doing some form of physical
activity instead. There are a large amount of
teens and children who are now overweight, as they
are expending little energy, and often eat high
calorie snacks while watching TV or playing on the
computer. Today in the US, about 1/3 of elementary
school children carry out some form of physical
education, and less than 1/5 take part in physical
activity programs after school.
Heredity
Recently, information has shown that heredity can
influence fatness in a child and teen. It was
found that children born to overweight mothers have
been found to be less active, and often gain more
weight by the age of 3 months compared to those
children born to mothers who are a normal weight,
which suggests a possible inborn drive to conserve
energy.