Organisms acquire more calories by eating hot foods than cold foods themselves; therefore, the widespread use of microwave ovens could have played a small role In the current obesity epidemic, just like the widespread use of refrigerators could have delayed the historical increase in obesity a century ago.
This is what a recent study suggests in which facotres such as dietary habit, physical activities, genetic predisposition and other demographic factors were also assessed and excluded.
Regardless of them, having a microwave was associated with an increase of .781 in body mass index (BMI) and 2.1 kg of weight (when ownership of other kitchen appliances was not associated with an increase in BMI or weight ), and more than doubled the probability of being overweight.
In the United States, from 1960 to 2015, the rates of overweight, obesity and extreme obesity in adults are, in fact, highly correlated with the proportion of households with microwaves, while the average household income was not associated at all with them.
Microwaves are a double-edged sword because they are also a very healthy way to cook food and supermarkets sell healthy foods if people decide to buy them. The problem is that, as a percentage, it seems that it is not so in the United States.
It is also suspected that processed foods cause a variety of health problems. Foods rich in sugar and refined carbohydrates, for example, are known to cause high blood sugar and obesity. And many of them are made to be heated only in the microwave, saving cooking time in the user.
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