Food affects the blood sugar when carbohydrates are broken down into sugar and enter the bloodstream to raise the blood sugar levels. An increase in blood sugar causes the pancreas to produce insulin, a substance that regulates blood sugar levels, claims Harvard T.H. Chan School of Public Health.
The type of food eaten determines the amount of blood sugar, explains Healthline. Therefore, eating foods containing carbohydrates leads to higher levels of blood sugar. Blood sugar is important, but excess blood sugar may cause diabetes. Consuming carbohydrates in liquid form causes a faster rise in blood sugar levels than those in solid form.