
Carbohydrates are one of the three main nutrients found in foods and drinks and are essential for the body to function. The body breaks down carbohydrates into glucose, which is the main source of energy for the body's cells, tissues, and organs. While simple carbohydrates are sugars that are quickly digested and absorbed, complex carbohydrates are key to long-term health and take longer to digest, leaving you feeling fuller for longer. They also pack in more nutrients, are higher in fibre, and help regulate blood sugar spikes, making them a great option for weight control and people with type 2 diabetes.
| Characteristics | Values |
|---|---|
| Energy source | Carbohydrates are one of the body's primary sources of energy. |
| Glucose production | Carbohydrates are broken down by the body into glucose (blood sugar). |
| Health benefits | Complex carbohydrates help maintain a healthy weight, guard against type 2 diabetes, and reduce the risk of cardiovascular problems. |
| Nutrients | Complex carbohydrates are packed with nutrients like fibre, potassium, magnesium, selenium, antioxidants, vitamins, and minerals. |
| Blood sugar regulation | Complex carbohydrates help regulate blood sugar spikes and keep blood sugar levels sustained and steady. |
| Bowel health | The fibre in complex carbohydrates promotes bowel health and regularity. |
| Cholesterol control | Diets rich in fibre from complex carbohydrates can help lower cholesterol. |
| Weight control | Complex carbohydrates digest slowly, making you feel full for longer, which aids in weight control. |
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What You'll Learn

Complex carbohydrates are key to long-term health
Simple carbohydrates are sugars that are quickly digested and absorbed, causing a spike in blood sugar levels. While some sugars occur naturally in foods like fruits, vegetables, and milk, most simple carbohydrates in the Western diet are added to foods. These include sugary drinks, candy, desserts, and processed foods.
On the other hand, complex carbohydrates are digested more slowly, providing a slower release of glucose into the bloodstream. They are found in foods like fruits, vegetables, legumes, beans, lentils, dried peas, and whole grains. Complex carbohydrates are higher in fiber, which promotes bowel regularity, helps control cholesterol, and supports digestive health. They also contain other important nutrients like vitamins and minerals, which are often removed during the refining process of grains.
By choosing complex carbohydrates over simple carbohydrates, individuals can maintain a healthy weight and reduce their risk of type 2 diabetes and cardiovascular problems. The glycemic index (GI) is a useful tool to understand how different foods impact blood sugar levels, with foods high in protein, fat, or fiber typically having a lower GI. Additionally, the folate found in oats and other whole grains is crucial for brain development and function, supporting mental health and well-being.
In summary, complex carbohydrates are essential for long-term health as they provide a sustained energy source, help regulate blood sugar, support digestive health, and provide essential nutrients that protect against various health conditions.
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They are a primary source of energy for the body
Carbohydrates are one of the three main nutrients found in foods and drinks, along with proteins and fats. They are a primary source of energy for the body. The body breaks down carbohydrates into glucose (blood sugar), which is the main source of energy for the body's cells, tissues, and organs. Glucose can be used immediately or stored in the liver and muscles for later use.
Simple carbohydrates, or sugars, are found in foods with empty calories and very little nutrition. They are quickly digested and absorbed, leading to spikes in blood sugar and energy levels. While some simple carbohydrates occur naturally in milk, most are added to foods such as candy, desserts, processed foods, and regular soda.
Complex carbohydrates, on the other hand, are loaded with healthy nutrients and are higher in fibre. They take longer to digest and absorb, leaving you feeling fuller for longer. This makes them a good option for weight control. Complex carbohydrates include fruits, vegetables, legumes, beans, lentils, dried peas, and whole grains such as brown rice and whole-grain pasta, bread, and cereals.
The fibre in complex carbohydrates promotes bowel health and regularity and helps to control cholesterol. Complex carbohydrates are also important for long-term health, making it easier to maintain a healthy weight and guard against type 2 diabetes and cardiovascular problems.
While carbohydrates are essential for energy, it is important to eat the right kinds of carbohydrates for optimal health. Choosing complex carbohydrates over simple carbohydrates will provide the body with sustained energy and essential nutrients.
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They help maintain a healthy weight
Carbohydrates are one of the three main nutrients found in foods and drinks, along with proteins and fats. They are essential food nutrients that the body turns into glucose (blood sugar) to give us energy.
Complex carbohydrates are key to maintaining a healthy weight. They are higher in fibre and digest more slowly, making you feel full for longer. This means you are less likely to overeat and helps with weight control. Complex carbs are also a healthier choice than simple carbs, as they are loaded with healthy nutrients. They are also ideal for people with type 2 diabetes because they help manage blood sugar spikes after meals.
Simple carbs, on the other hand, digest quickly and tend to spike your blood sugar. They can also increase your risk of diabetes, heart disease, and high cholesterol. While they are not necessarily "bad", they do not nourish your body in the same way that complex carbs do.
The best approach is to eat plenty of nutrient-rich complex carbs and consume simple carbs in moderation. It is important to note that there is no one-size-fits-all approach to carbohydrate intake, and the right amount for each person will depend on factors such as age, sex, and health goals.
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They are loaded with healthy nutrients
Carbohydrates are one of the three main nutrients found in foods and drinks. They are essential food nutrients that the body turns into glucose (blood sugar) to provide energy. While simple carbohydrates are sugars, which are quickly digested, complex carbohydrates are fibre and starch, which take longer to digest and absorb. This makes complex carbohydrates a healthier option as they are loaded with healthy nutrients.
Complex carbohydrates are found in fruits, vegetables, whole grains, legumes, beans, lentils, and dried peas. They are a good source of fibre, potassium, magnesium, selenium, folate, iron, and potassium. Fibre is especially important for bowel health and regularity, helping to control cholesterol and lower the risk of colon diseases, haemorrhoids, and colorectal cancer. The folate found in oats and other whole grains is crucial for brain development and function, supporting mental health and well-being.
The antioxidants and other vitamins and minerals supplied by complex carbohydrates are protective against dementia and Alzheimer's disease. They also help to keep blood sugar levels sustained and steady, making them ideal for people with type 2 diabetes. Complex carbohydrates are key to long-term health, making it easier to maintain a healthy weight and guard against cardiovascular problems.
While simple carbohydrates are not necessarily "bad", they do not nourish the body in the same way as complex carbohydrates. They are quickly digested and absorbed, leading to spikes in blood sugar levels. They also tend to be empty calories with very little nutrition. Therefore, it is recommended to choose complex carbohydrates more often and eat simple carbohydrates in moderation.
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They help regulate blood sugar spikes
Carbohydrates are one of the three main nutrients found in foods and drinks, along with proteins and fats. They are essential for the body to function properly and stay healthy. Carbohydrates are made up of three components: fiber, starch, and sugar. Fiber and starch are complex carbohydrates, while sugar is a simple carbohydrate. Complex carbohydrates are key to long-term health and can help regulate blood sugar spikes.
Simple carbohydrates are quickly digested and absorbed, which can cause a rapid increase in blood sugar levels, known as a blood sugar spike. This spike is followed by a quick drop in blood sugar. In contrast, complex carbohydrates take longer to digest and absorb, providing a slower release of glucose into the bloodstream. This helps to keep blood sugar levels sustained and steady, preventing spikes and subsequent crashes.
The glycemic index (GI) is a tool used to measure the impact of different foods on blood sugar levels. Foods with high levels of processed carbohydrates and sugar tend to have a high GI, while foods rich in protein, fat, or fiber usually have a low GI. By choosing foods with a lower GI, individuals can effectively manage their blood sugar levels and reduce the risk of developing diabetes or cardiovascular issues.
Complex carbohydrates are an excellent source of fiber, which promotes bowel health and regularity. They are also packed with nutrients, including vitamins, minerals, and antioxidants, making them a nutritious addition to any diet. Examples of complex carbohydrates include whole grains, such as quinoa, buckwheat, brown rice, and whole-wheat pasta, as well as fruits and vegetables.
By including complex carbohydrates in our diets, we can help regulate blood sugar spikes and improve our overall health. The slower digestion and absorption of complex carbs provide a steady release of energy, keeping blood sugar levels stable. This makes them a healthier option compared to simple carbohydrates, which can cause rapid fluctuations in blood sugar levels.
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Frequently asked questions
Complex carbohydrates are one of the three main components of carbohydrates, the other two being fibre and starch. Complex carbohydrates are found in fruits, vegetables, whole grains, legumes, beans, lentils, and dried peas.
Complex carbohydrates are key to long-term health. They are loaded with healthy nutrients, vitamins, minerals, and fibre. They are also higher in fibre and digest more slowly, making them more filling and helping with weight control.
Complex carbohydrates digest more slowly and supply a slower release of glucose into the bloodstream. This keeps blood sugar levels sustained and steady, helping to regulate blood sugar spikes after meals.
Some examples of complex carbohydrates include whole grains like brown rice, whole-wheat pasta, whole-wheat bread, quinoa, buckwheat, fruits, and vegetables.
































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