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One of the reasons why people are becoming overweight these days is that they are eating more junk food, ready meals and convenience foods rather than cooking healthy meals at home. This is because many people tend to lead a busy life and after a long day at work it is easier to just buy ready meals in the supermarket or get a takeaway. For instance, in the UK, sales of these types of foods have risen sharply since 1990, and one reason is that busy people see cooking at home as time-consuming.