How can carbohydrates be bad for the human body?

Expert Answers
justaguide eNotes educator| Certified Educator

All carbohydrate that is part of a person's diet is used to generate energy for the cells of the body to function. Each gram of carbohydrate provides four calories of energy. Energy can also be generated from proteins and fats that are consumed.

The amount of food eaten should contain energy that is roughly equal to the amount required for daily activities. Any excess food is stored by the body in the form of fat deposits.

Carbohydrates rich foods are usually very light and do not satisfy the hunger of the person consuming them unless they are eaten in large quantities. These carbohydrates contain a lot of energy that is not required by the body. The human body then converts the excess carbohydrates to fat and stores it.

This leads to obesity which is associated with many ailments like diabetes, heart ailments, cancer, etc. It always has to be remembered that consumption of anything should be in moderation. An excessive consumption of anything can lead to serious consequences.

loraaa | Student

Carbohydrates are made up of starches, cellulose, and sugars, and can be found in many food groups, such as pastas, cereals, fruits, vegetables, and processed foods. They are also one of your body’s primary energy sources. However, to get the energy, your body must break them down and convert them into a simple sugar known as glucose. The production of glucose stimulates the production of insulin, a hormone that allows your body to distribute glucose all over.

Another risk of bad carb overindulgence is the possible development of Type II diabetes, a condition in which your body is either unable to produce adequate insulin, or your body simply ignores the available insulin. Again, overeating carbs results in the overproduction of glucose, which results in the overproduction of insulin. Overproduction of insulin makes it possible for your body to become overwhelmed by the constant need for insulin, and thus unable to regulate insulin production.

To keep your body healthy and energized, focus on maintaining a moderate intake of complex carbohydrates that are found in fiber-rich, whole-grain foods, fruits and vegetables. Also, pairing your meals with a small salad or light soup will help you feel fuller faster.

emilymisquita | Student

All carbohydrates are not equal. Some carbohydrates support a strong, healthy, slender, energetic body (we'll call these "good carbohydrates"), while other carbohydrates actually increase your overall risk of coronary heart disease, type 2 diabetes and many other degenerative diseases (theseare "bad carbohydrates").Bad carbohydrates are high on the glycemic scale.


The term "glycemic" refers to the amount and speed a food will raise your blood sugar and insulin levels. A high glycemic carbohydrate raises blood sugar levels quickly. This is typically not preferred, except when stored glycogen level;s are already depleted. are mainly found in: Pastries, Candies, Sodas, Fruit Drinks White bread, White rice, and other low fiber processed foods.

The sugars from simple  carbohydrate foods are rapidly absorbed into your blood stream, causing blood sugar problems. A diet high in simple carbohydrates has been shown to interfere with weight loss and contribute to weight gain, diabetes and coronary artery disease.


Whole grains, beans, fruits, vegetables, and other naturally intact healthy carbohydrates do just the opposite. A diet of good carbohydrates has been proven to promote excellent health.





bravien123 | Student

Carbohydrates are the main source of energy for a body, so that it can function to the best of its capabilities. We obtain carbohydrates from foods we eat, there are foods which give us short term energy, these are mainly junk foods i.e chocolate, good sources are breads pasta etc. Short term energy boost may be good for a certain period of time but after it wears of you will feel lousy and tired. Carbohydrates which do not get used or are left over get stored as fat, fat is the second primary source of energy. This can be stored for later use. The downside to this is that it makes you more "pudgy" and changes your physical appearance.

ujoarder | Student

Processed and refined foods can be called bad carbohydrate foods. These foods are not in their natural state unlike good carbohydrates such as vegetables, fruits, beans etc. When these carbohydrates are processed, the food looses the essential nutrients. Bad carbohydrates are added with lot of additives in the form of colorings, flavorings and preservatives. Even though tasty, they are harmful to the human body. They are hard to digest and increase the blood glucose level. Some examples include candy, baked goods with refined white flour, white pastas, and sodas. They can lead to obesity, diabetes, heart disease etc. if taken in excessive amounts. Also, the calories provided by bad carbohydrates do not have a nutritional value.