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1.
S₁: Obesity is a curse of modem times.
S₆: This is because today's changed life styles often mean less physical exertion and an over indulgence in unhealthy food.

P: As a result, what is lost is the natural goodness of roughage and important nutrients.
Q: Invariably, fat and sugar which cause obesity are added to make food more palatable.
R: In these days, food gets more refined and cooking methods are more intricate.
S: Therefore, there are more obese people today than ever before.