Remember another experiment: every meal you eat at McDonald's will make you thinner and healthier after 30 days.
A middle school teacher in the United States ate McDonald's for every meal. He also asked his students to study which McDonald's meals are nutritiously balanced, and help him decide his "McDonald's recipe" and insist on walking to work every day.
As a result, one month later, he lost weight and his physical indicators became healthier.
Therefore, when considering the impact of fast food on health in a documentary, one should also consider the daily calorie intake and nutritional pyramid recommended by the World Health Organization.
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