The primary advantage to this diet is that you will lose weight if you eat what you are given. Portion-and-calorie-controlled meals are great tools for long-term weight loss and maintenance. They take away the guesswork of how many calories you consume, they can be nutritionally balanced, they are quick and easy to prepare, and they teach you about healthy portion sizes.
While it’s good to be aware of portion sizes on nutrition labels, why not flip them to your benefit? For example, instead of a bowl of ice cream with a few blueberries, have a bowl of blueberries with a spoonful of ice cream. While one cup of ice cream has more than 250 calories and not much in the way of nutrition, one cup of blueberries contains only 80 calories and is a good source of fiber and vitamin C. Or, instead of a plate of pasta with some veggies, have a plate of veggies with some pasta. A mix of steamed or roasted cruciferous vegetables works great with a smaller amount of pasta. Not only does this ingredient swap cut the calories in the dish, the additional veggies provide nutrients like fiber, potassium and vitamin A.

Changing the way you go about eating can make it easier to eat less without feeling deprived. It takes 15 or more minutes for your brain to get the message that you've been fed. Eating slowly will help you feel satisfied. Eating lots of vegetables and fruits can make you feel fuller. Another trick is to use smaller plates so that moderate portions do not appear too small. Changing your eating schedule, or setting one, can be helpful, especially if you tend to skip, or delay, meals and overeat later.


Over 8–10 mmol/l: It’s normally impossible to get to this level just by eating a keto diet. It means that something is wrong. The most common cause by far is type 1 diabetes, with severe lack of insulin. Symptoms include feeling very sick with nausea, vomiting, abdominal pain and confusion. The possible end result, ketoacidosis, may be fatal and requires immediate medical care. Learn more
"When going out for fast food, I used to get the large-size value meal. Now, I satisfy a craving by ordering just one item: a small order of fries or a six-piece box of chicken nuggets. So far, I've shaved off 16 pounds in seven weeks, and I'm on track to being thinner than my high school self for my 10-year reunion later this year." —Miranda Jarrell, Birmingham, AL
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