If you removed carbs and replaced them with say protein, you would loose weight. Protein can not be stored as fat in the human body and is great for muscle growth. Carbs can be stored in the human as fat, so if you removed both protein and carbs you would die, as both of those give your body energy to survive.
Yes, a person can survive long term without carbohydrates. Just as the Inuit (Eskimos) did. Unlike protein and fats, carbohydrate is not an essential nutrient, which means is it not essential for health or to sustain life. Proteins and fats, however, are essential both for health and to sustain life. For more information, see the page link, further down this age, listed under Related Questions.
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carbohydrates
On the Atkins diet, you go by carbohydrates (most carbohydrates have sugars in them).
A lot of grains
A good protein diet plan that would make you lose weight but not gain muscle would be the Atkins diet. This is a diet that basically cuts out carbohydrates. www.atkins.com
The astronaut´s diet does not consist of carbohydrates - the main idea of the diet is to avoid carbohydrates. It consists mainly protein. The idea of avoiding carbohydrates is that if organism doesn´t get carbohydrates then it starts using fat - both: the one we get with food and the one we have in our bodies. So, astronaut´s diet does not consist of carbohydrates!
You would loose weight
As healthy as chili can be (when made properly), I'm afriad it can't really be included as a meal option in a no-carb diet. Beans are one of the healthies complex carbohydrates out there, but they are still that: complex carbohydrates.
The no carb diet cuts out all carbohydrates from what you can eat. The cookie diet allows you to have cookies, which are packed with carbohydrates, but not much else.
People living in the Western Hemisphere tend to eat a diet that is high in carbohydrates.
Carbohydrates are not essential ingredient in your diet. Most of the foods, specially vegetarian foods items contains carbohydrates in them. Carbohydrates give you energy or they get deposited as fat in your body.
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You would do well to avoid cereals if you are following a low carbohydrate diet. Cereals are refined processed carbohydrates. .