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Causes of Overweight

A number of factors contribute to becoming overweight. Genetics, lifestyle habits, or a combination of both may be involved. In some instances, endocrine problems, genetic syndromes, and medications can be associated with excessive weight gain.

Much of what we eat is quick and easy — from fat-laden fast food to microwave and prepackaged meals. Daily schedules are so jam-packed that there’s little time to prepare healthier meals or to squeeze in some exercise. Portion sizes, in the home and out, have grown greatly.

Plus, now more than ever life is sedentary — kids spend more time playing with electronic devices, from computers to handheld video game systems, than actively playing outside. Television is a major culprit.

Kids younger than 6 spend an average of 2 hours a day in front of a screen, mostly watching TV, DVDs, or videos. Older kids and teens spend almost 4 hours a day watching TV, DVDs, or videos. When computer use and video games are included, time spent in front of a screen increases to over 5 hours a day! Kids who watch more than 4 hours a day are more likely to be overweight compared with kids who watch 2 hours or less.

Not surprisingly, TV in the bedroom is also linked to increased likelihood of being overweight. In other words, for many kids, once they get home from school, virtually all of their free time is spent in front of one screen or another.

The American Academy of Pediatrics (AAP) currently recommends limiting the time kids over 2 years of age spend in front of a screen to no more than 1-2 hours. The AAP also discourages any screen time for children younger than 2 years.

Many kids don’t get enough physical activity. Although physical education (PE) in schools can help kids get up and moving, more and more schools are eliminating PE programs or cutting down the time spent on fitness-building activities. One study showed that gym classes offered third-graders just 25 minutes of vigorous activity each week.

Current guidelines recommend that kids over 2 years of age get at least 60 minutes of moderate to vigorous physical activity on most, preferably all, days of the week.

Genetics also play a role — genes help determine body type and how your body stores and burns fat just like they help determine other traits. Genes alone, however, cannot explain the current obesity crisis. Because both genes and habits can be passed down from one generation to the next, multiple members of a family may struggle with weight.

People in the same family tend to have similar eating patterns, maintain the same levels of physical activity, and adopt the same attitudes toward being overweight. Studies have shown that a child’s risk of obesity greatly increases if one or more parent is overweight or obese.