Which statement is true about complex carbohydrates?

Which statement is true about complex carbohydrates?

• A. Complex carbohydrates typically have a low GI
• B. Complex carbohydrates typically have a high GI
• C. GI is unrelated to carbohydrate type
• D. Only sugars affect GI

Answer: (A)

When we think about how quickly foods affect blood sugar, the key idea is how fast the carbohydrates are digested and absorbed. Complex carbohydrates are made of longer chains and usually include fiber, which slows down digestion. Because of this slower breakdown, glucose enters the bloodstream more gradually, leading to a lower and steadier rise in blood glucose. That’s why the statement about complex carbohydrates typically having a low GI is the best choice. In contrast, simple sugars and many refined starches are digested quickly, causing a rapid spike in blood glucose (a higher GI). The glycemic index is also influenced by other factors in a food and how it’s prepared or eaten with (fat, protein, acidity, and processing can all change GI), so it’s not correct to say GI is unrelated to carbohydrate type or that only sugars affect GI.

When we think about how quickly foods affect blood sugar, the key idea is how fast the carbohydrates are digested and absorbed. Complex carbohydrates are made of longer chains and usually include fiber, which slows down digestion. Because of this slower breakdown, glucose enters the bloodstream more gradually, leading to a lower and steadier rise in blood glucose. That’s why the statement about complex carbohydrates typically having a low GI is the best choice.

In contrast, simple sugars and many refined starches are digested quickly, causing a rapid spike in blood glucose (a higher GI). The glycemic index is also influenced by other factors in a food and how it’s prepared or eaten with (fat, protein, acidity, and processing can all change GI), so it’s not correct to say GI is unrelated to carbohydrate type or that only sugars affect GI.