You’ll learn
- What foods effectively support weight loss
- Why we experience hunger and desires
- How to create healthy habits
- The importance of meal timing
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first KEY POINT
Obesity is one of the hottest topics in nutrition and medical science. This is because a good percentage of the population is affected by it. There are literally millions of books, articles and courses flying around on the Internet that claim to help people reduce the extra body fat they carry around.Many of such materials have no solid foundation in science, nor can they be explained by it. Most of them are products of trial and error, and rely upon testimonials to convince people into using them. But “How Not to Diet” is different from every such material. This summary is based on results from scientific research that has been going on for decades.Michael Greger is a researcher and teacher who loves digging up facts and making them plain to the public. His book was born out of a research project he embarked upon with his research team. This summary has condensed the most important takeaways for you, so sit back and enjoy the ride.
Let's start with the basics. What exactly is obesity, and how do you know if you're obese or not? Most people think they know the answer to these questions, but they don't.You don't consider someone obese simply because they seem to have extra weight. There's a difference between being overweight and being obese. People are obese only when they have a body mass index (BMI) of 30 or more. A BMI between 25 and 29.9 is classified overweight, while ideal weight is between 18.5 and 24.9.It's easy to calculate your BMI on your own. You could either visit an online BMI calculator or do it manually. For the manual calculation, multiply your weight in pounds by 703, then divide the number twice by your height in inches. For example, if you weigh 250 pounds and are 70 inches tall, your BMI is (250×703÷70÷70) 35.9.
second KEY POINT
Many people are confused. Have humans always been obese or is it something that started only recently?If we're to answer this correctly, then we need to go back in time. Historical records show that obesity has always been around. But we know that the numbers shot up drastically in the 1970s (at the time, obesity in America and other developed nations moved from 1 in 30 people to 1 in 3).Many theories have been developed to explain this sudden rise in obesity that refuses to drop, but none of them hold water. The real culprit is the food industry. The way we eat has changed dramatically since the '70s. This resulted from the boom in technology. Machines were created to make fast food a possibility. And in addition, the food industry became more intelligent about manufacturing sweet, high calorie foods. Since we naturally are attracted to sweet and delicious foods, it became easy for almost everyone to be obese. It was only a matter of time.

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