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Blood sugar, or glucose, is the main source of energy for your cells. However, having too much or too little blood sugar can cause serious health problems, especially if you have diabetes. Diabetes is a condition that affects how your body produces or uses insulin, a hormone that helps regulate blood sugar levels. Eating a balanced diet that includes foods that can help lower your blood sugar levels is essential for managing diabetes. However, some foods can raise your blood sugar levels too quickly or too high, which can increase your risk of complications such as nerve damage, kidney damage, eye problems, and heart disease. In this article, we will identify some of the worst foods for blood sugar regulation and explain why you should avoid them or eat them only in moderation. We will also provide some tips on how to choose healthier alternatives.

Fruits with added sugars are one of the worst offenders when it comes to blood sugar spikes. Added sugars are sugars that are not naturally present in fruits but are added during processing or preparation. Examples of added sugars include table sugar, brown sugar, honey, maple syrup, agave nectar, corn syrup, and high fructose corn syrup. Fruits with added sugars are usually high in calories and carbohydrates but low in fiber, protein, and other nutrients that can slow down digestion and prevent blood sugar spikes. They can also increase your appetite and cravings for more sugary foods, leading to overeating and weight gain. Some examples of fruits with added sugars that you should avoid or limit include:
- Canned fruit, such as peaches, pears, pineapple, and mandarin oranges. These are often packed in syrup and have high sugar content. Choose fresh or frozen fruit instead.
- Dried fruit, such as raisins, cranberries, apricots, and dates. These are concentrated sources of natural sugars and have a higher glycemic index than fresh fruit. They also lack water and fiber that can help fill you up and slow down digestion.
- Fruit juice concentrates, such as apple juice concentrate, grape juice concentrate, and orange juice concentrate. These are liquids that have most of the water removed from fruit juice and have added sugars to enhance their flavor and shelf life. They have a very high glycemic index and can spike your blood sugar levels quickly.
- Fruit snacks, such as fruit roll-ups, fruit leather, gummies, and candies. These are made with fruit juice concentrates and added sugars that can raise your blood sugar levels rapidly. They also lack fiber and other nutrients that can benefit your health.
To avoid fruits with added sugars, you should read nutrition labels carefully and look for ingredients that end in “-ose” (such as glucose, fructose, sucrose, or maltose) or words that indicate added sugars (such as syrup, nectar, or juice). Choose fresh, whole fruits instead, as they have natural sugars that are balanced with fiber, vitamins, minerals, and antioxidants.
Fruits high in sugar or carbohydrates:

Fruits are generally healthy foods that provide many benefits for people with diabetes. However, fruits are higher in sugar or carbohydrates than others and can affect your blood sugar levels more than others. These fruits are not necessarily bad for you, but you should eat them in moderation and balance them with other foods that are lower in sugar or carbohydrates. Some examples of fruits that are high in sugar or carbohydrates that you should limit include:
- Watermelon. Watermelon is a refreshing fruit that is high in water and low in calories. However, it is also high in sugar and has a high glycemic index of 72. This means that it can raise your blood sugar levels quickly. A cup of diced watermelon has about 10 grams of sugar and 11 grams of carbohydrates.
- Overly ripe bananas. Bananas are a nutritious fruit that are high in potassium, fiber, and vitamin C. However, they are also high in sugar and carbohydrates and have a medium to high glycemic index depending on their ripeness. A medium banana has about 14 grams of sugar and 27 grams of carbohydrates. The riper the banana, the higher its glycemic index and the more it can spike your blood sugar levels.
- Mangoes. Mangoes are a tropical fruit that are high in vitamin A, vitamin C, and antioxidants. However, they are also high in sugar and carbohydrates and have a medium glycemic index of 51. A cup of sliced mango has about 23 grams of sugar and 28 grams of carbohydrates.
- Pineapples. Pineapples are a juicy fruit that are high in vitamin C, manganese, and bromelain, an enzyme that can help with digestion and inflammation. However, they are also high in sugar and carbohydrates and have a medium glycemic index of 59. A cup of diced pineapple has about 16 grams of sugar and 22 grams of carbohydrates.
- Cherries. Cherries are a sweet fruit that are high in antioxidants, anthocyanins, and melatonin, which can help with sleep quality and inflammation. However, they are also high in sugar and carbohydrates and have a medium glycemic index of 63. A cup of pitted cherries has about 18 grams of sugar and 25 grams of carbohydrates.
To limit fruits that are high in sugar or carbohydrates, you should eat them in small portions and pair them with foods that are high in protein or healthy fats, such as nuts, seeds, cheese, or yogurt. This can help slow down the digestion of sugars and prevent blood sugar spikes. You should also avoid eating these fruits on an empty stomach or when your blood sugar levels are low.
Nuts with added salt or sugar:
Nuts are generally healthy foods that provide many benefits for people with diabetes. Nuts are high in protein, healthy fats, fiber, magnesium, and other nutrients that can improve your blood sugar regulation, lower your cholesterol levels, and prevent blood sugar spikes. Nuts also have a low glycemic index and glycemic load, which means they don’t raise your blood sugar levels as much as other foods. However, nuts that are coated in salt or sugar, and flavored nuts may not be the best choice for people with diabetes. Specifically, you should avoid chocolate-covered peanuts and honey-roasted cashews as they are high in carbs and can spike your blood sugar levels. Macadamia and pecans are also high in calories and should be eaten sparingly to avoid disrupting blood glucose control. To avoid nuts with added salt or sugar, you should read nutrition labels carefully and look for ingredients that indicate added salt (such as sodium) or added sugar (such as glucose, fructose, sucrose, or maltose). Choose plain or unsalted nuts instead, such as almonds, walnuts, cashews, pistachios, and peanuts. You can eat them as a snack, add them to salads or oatmeal, or make nut butters or milks with them. Just be mindful of the portion size, as nuts are high in calories and can cause weight gain if eaten in excess.
Disclaimer: Tips and suggestions mentioned in the article are for general information purposes only and should not be construed as professional medical advice. Always consult your doctor or a dietician before starting any fitness programme or making any changes to your diet.