*The following is excerpted from an online article posted on PsychCentral.

A Canadian study suggests that watching too much television can contribute to poor eating habits in adolescence and suboptimal school performance. While the concept is not new, the study suggests that screen time must be controlled by the early age of two, confirming new recommendations by the American Academy of Pediatrics.

Researchers at Université de Montréal’s School of Psychoeducation, performed a longitudinal study looking at a birth cohort of nearly 2,000 Quebec boys and girls born between spring 1997 and 1998. The children were followed since they were five months old as part of the Quebec Longitudinal Study of Child Development.

When they reached two years of age, their parents reported on their daily television habits. Then, at age 13, the youths themselves reported on their dietary habits and behavior in school.

The research appears in the journal Preventive Medicine.

“Not much is known about how excessive screen exposure in early childhood relates to lifestyle choices in adolescence,” explains Professor Linda Pagani. Pagnai supervised the research of graduate student Isabelle Simonato.

“This birth cohort is ideal, because the children were born before smartphones and tablets, and before any pediatric viewing guidelines were publicized for parents to follow. They were raising their children with TV and seeing it as harmless. This makes our study very naturalistic, with no outside guidelines or interference — a huge advantage.”

Simonato added, “Watching TV is mentally and physically sedentary behavior because it does not require sustained effort. We hypothesized that when toddlers watch too much TV it encourages them to be sedentary, and if they learn to prefer effortless leisure activities at a very young age, they likely won’t think much of non-leisure ones, like school, when they’re older.”

In their study, the researchers found that every hourly increase in toddlers’ TV viewing forecasted bad eating habits down the road — an increase of eight percent at age 13 for every hourly increase at age two.

In questionnaires, those early-TV adolescents reported consuming more French fries, prepared meats and cold cuts, white bread, regular and diet soft drinks, fruit-flavored drinks, sports drinks, energy drinks, salty or sweet snacks, and desserts.

Early TV viewing also translated into less eating of breakfast on school days (by 10 percent) and led to more overall screen time at age 13.

Every additional hour of watching TV also predicted a higher body mass index (a 10 percent increase) and less effortful behavior at school in the first year of secondary school, ultimately affecting performance and ambition.

“This study tells us that overindulgent lifestyle habits begin in early childhood and seem to persist throughout the life course,” Pagani noted. “An effortless existence creates health risks. For our society that means a bigger health care burden associated with obesity and lack of cardiovascular fitness.”

The researchers also measured their results against revised screen time guidelines by the American Academy of Pediatrics, which reduced the amount of daily viewing from two hours a day to one a day for children between ages two and five.

Compared to children who viewed less than one hour a day at age two, those who viewed between one and four a day later reported (at age 13) having less healthy dietary habits, skipping breakfast on weekdays, having a higher BMI, engaging in more intense screen time, and being less engaged as students.

Source: PsychCentral
https://psychcentral.com/news/2018/02/14/control-of-screen-time-needs-to-begin-young-by-age-2/132537.html

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