High-Glycemic Index Foods: Why Diabetics Should Avoid Them

By Cureka Support3 Blog

Why Does the Glycemic Index Matter?

When it comes to managing diabetes, one of the most crucial aspects is controlling blood sugar levels. While various factors influence these levels, the type of food we consume plays a pivotal role. But have you ever wondered why certain foods cause a rapid spike in blood sugar while others have a more gradual effect? The reason is not because the taste of the food is sweet. The answer lies in the Glycemic Index (GI) of foods. Do you know why high-glycemic index foods are particularly detrimental for diabetics and why it’s essential to avoid them? Let’s explore.

What is the Glycemic Index?

The Glycemic Index is a numerical scale used to measure how quickly foods raise blood sugar levels. It ranges from 0 to 100, with pure glucose assigned a value of 100. Foods with a high GI (70 and above) are rapidly digested and absorbed, leading to a swift increase in blood sugar levels. On the other hand, foods with a low glycemic index (GI) of 55 and below are absorbed more slowly, resulting in a gradual rise in blood sugar.

The Impact of High-Glycemic Foods on Blood Sugar Levels

For diabetics, maintaining stable blood sugar levels is crucial to prevent complications. Foods high in glycemic index, such as white bread, sugary cereals, rice, high carb foods and snacks, can cause sudden spikes in blood sugar. This rapid increase can overwhelm the body’s insulin response, making it difficult to manage glucose levels effectively. Over time, frequent consumption of these foods can lead to insulin resistance, worsening diabetes symptoms and increasing the risk of complications.

List of Common High-Glycemic Index Foods

Understanding which foods have high GI levels can help in making better dietary choices. Here are some common foods with a high glycemic index:

White Bread: Often made from refined flour, white bread can cause a rapid increase in blood sugar.
Sugary Breakfast Cereals: Many popular cereals contain added sugars and refined grains, making them high in GI. Read the nutritional label of your instant Breakfast cereal to know the grams of added sugar in it.
Pastries and Cakes: Loaded with sugar and refined flour, these treats are a quick way to spike your blood sugar.
White Rice: Unlike its brown counterpart, polished white rice is stripped of fiber and nutrients, resulting in a high GI.
Potatoes: While a nutritious vegetable, potatoes, especially in forms like French fries, have a high GI.
Soft Drinks and Sugary Beverages: These are some of the highest-GI foods due to their sugar content.
Snacks and Sweets: Candy, cookies, and other sweet snacks often contain high levels of sugar and refined flour.

Why Diabetics Should Avoid Foods with High GI Levels

Rapid Blood Sugar Spikes: Foods high in glycemic index can lead to rapid spikes in blood sugar levels. For diabetics, this can be particularly dangerous, as it may cause symptoms like dizziness, fatigue, and even diabetic ketoacidosis in severe cases.
Increased Insulin Resistance: Frequent consumption of high-GI foods can contribute to insulin resistance, a condition where the body’s cells become less responsive to insulin. This can make it even harder to manage diabetes and control blood sugar levels.
Weight Gain: High-GI foods are often low in nutrients but high in calories. Consuming these foods can lead to overeating and weight gain, which is a risk factor for type 2 diabetes and can worsen the condition in those already diagnosed.
Long-Term Health Risks: Persistent high blood sugar levels can lead to long-term complications such as cardiovascular disease, nerve damage, kidney issues, and vision problems. Avoiding high-GI foods can help minimize these risks.

Alternatives to High-Glycemic Index Foods

The good news is that there are plenty of delicious and nutritious alternatives to high-GI foods. Here are some options:

Whole Grains: Instead of white bread or rice, opt for whole grains like brown rice, millets, quinoa and whole wheat bread. These have lower GI levels and are rich in fiber, which helps regulate blood sugar.
Legumes: Beans, lentils, and chickpeas are excellent sources of protein and fiber, with a low GI.
Fruits and Vegetables: While some fruits have higher GI levels, most vegetables and fruits like apples, berries, and leafy greens are low in GI and packed with nutrients.
Nuts and Seeds: These are great for snacking and have a low GI, providing healthy fats and protein.
Low-GI Snacks: Instead of sugary treats, opt for snacks like yogurt, veggies, or a handful of nuts.

Tips for Managing Glycemic Index in Your Diet

Read Labels: Always check food labels for sugar and refined carbohydrate content. Ingredients are listed in order of quantity, so if sugar or white flour is among the first few, it’s likely a high-GI food.
Combine Foods Wisely: Pair high-GI foods with those that have low GI levels to balance out the meal’s overall impact on blood sugar. For example, have a slice of whole-grain bread with any fruit like avacado instead of white bread with jam.
Portion Control: Even low-GI foods can raise blood sugar if consumed in large quantities. Be mindful of portion sizes.Each fibre rich foods first and then have high GI foods like rice.
Monitor Your Blood Sugar: Regularly check your blood sugar levels to understand how different foods affect you personally. This can help you make more informed choices

Before concluding let’s know the glycemic index value of common Indian foods:

High-Glycemic Index Indian Foods (GI 70 and above)

White Rice (Cooked) – GI: 72-89
Jaggery – GI: 84
Poha (Flattened Rice) – GI: 69-85
Parboiled Rice – GI: 87
Aloo Paratha (Potato Stuffed Bread) – GI: 77
Idli – GI: 65-80 (varies depending on fermentation and type of rice)
Puffed Rice (Murmura) – GI: 85
Papad – GI: 80-85
Samosa (Fried Pastry with Potato Filling)- GI: 75-80
Puri (Deep-Fried Indian Bread) – GI: 75-80

Low-Glycemic Index Indian Foods (GI 55 and below)

Brown Rice – GI: 50
Chana Dal (Bengal Gram Lentils) – GI: 8
Rajma (Kidney Beans) – GI: 29
Moong Dal (Green Gram) – GI: 38
Bajra (Pearl Millet)- GI: 55
Roti (Whole Wheat) – GI: 45-55
Barley- GI: 28
Green Vegetables (e.g., Spinach, Methi) – GI: 15-20
Dahi (Yogurt) – GI: 14
Ragi (Finger Millet) – GI: 54

The glycemic index values can vary slightly based on preparation methods, portion sizes, and the specific type of food. Steamed foods retain the GI lower compared to fried and deep fried ones.

Here are some fruits with their glycemic index (GI) values:

High-Glycemic Index Fruits (GI 70 and above)

Watermelon – GI: 72
Ripe Banana – GI: 60-70 (varies depending on ripeness)
Pineapple – GI: 66
Dates – GI: 103 (Note: GI can vary significantly based on the type of date and degree of ripeness)

Low-Glycemic Index Fruits (GI 55 and below)

Guava – GI: 12-24
Apples – GI: 36
Pears – GI: 38
Oranges – GI: 40-44
Berries (e.g., Strawberries, Blueberries) – GI: 25-40 (varies by type)
Papaya – GI: 60
Pomegranates – GI: 35
Cherries – GI: 22
Plums – GI: 24
Kiwi – GI: 52

These fruits are generally better options for those managing blood sugar levels, as they have a lower impact on blood glucose. Diabetes can’t stop you. Apart from this list, there are plenty of other low GI foods available. Talk to your dietician today to explore your options.

Conclusion:

Avoiding high-glycemic index foods is a crucial step for diabetics in managing their condition. By understanding the impact of these foods on blood sugar levels and making healthier choices, it’s possible to maintain better control over diabetes and reduce the risk of complications. Remember, it’s not about completely eliminating certain foods but about making smarter, balanced choices. Even while choosing your diabetic protein supplements you can opt for supplements with low GI index. Diabetic supplements are available online in India at cureka.com. So next time you’re grocery shopping or planning a meal, keep the glycemic index in mind and choose foods that support your health goals.