Diabetes: Foods to Eat & Avoid

Key principles

• Prefer low-glycaemic whole grains
• Pair carbs with fibre/protein
• Limit added sugar

Foods to eat

• Rye — The high viscous fiber content delays gastric emptying and starch digestion, reducing postprandial glucose spikes and improving overall insulin response. Incorporate whole-grain rye bread or rye flakes as a complex carbohydrate source to assist in daily glycemic control. [PubMed]
• Curd — Plain curd has a low glycemic index and its protein slows gastric emptying, preventing rapid postprandial blood glucose spikes. Include plain, unsweetened curd in meals to help stabilize blood glucose response. [ICMR-NIN, PubMed]
• Almond Milk — Unsweetened almond milk has a negligible glycemic impact due to its low carbohydrate and sugar content. Check labels carefully to avoid 'original' or flavored versions, which often contain hidden sugars that can spike blood glucose levels. [USDA, WHO]
• Soy Milk — Features a low glycemic index and provides a balanced mix of protein and low-glycemic carbohydrates to prevent postprandial glucose spikes. Opt for unsweetened, non-flavored varieties to avoid hidden added sugars. [USDA, PubMed]
• Cinnamon — Improves insulin sensitivity and cellular glucose uptake, aiding in the reduction of fasting blood glucose levels. Incorporate a pinch of cinnamon powder into daily meals, oats, or warm beverages as a flavorful, unsweetened spice to support glycemic control. [PubMed]
• Fenugreek — Soluble fiber (galactomannan) slows carbohydrate digestion and glucose absorption, while amino acids like 4-hydroxyisoleucine stimulate insulin secretion. Incorporate methi seeds (soaked) or fresh methi leaves into daily meals as a natural, fiber-rich option to support healthy glucose regulation. [ICMR-NIN, PubMed]
• Soy — Soy foods have a low glycemic index and are rich in complex carbohydrates and fiber, which helps prevent rapid blood glucose spikes and improves insulin sensitivity. Opt for minimally processed soy products like edamame, tofu, or unsweetened soy milk to manage dietary glycemic load. [ICMR-NIN, PubMed]
• Apple — The soluble fibre pectin slows carbohydrate digestion and delays glucose absorption, while polyphenols can enhance insulin sensitivity. Apples make an excellent whole-fruit snack for individuals managing blood sugar when consumed in moderation and with the skin intact. [ICMR-NIN, PubMed]
• Almond — The low glycemic index combined with healthy fats, fiber, and magnesium helps slow glucose absorption and improve insulin action. Consume almonds as a mid-meal snack to help prevent postprandial glucose fluctuations. [ICMR-NIN, PubMed]
• Paneer — Its minimal carbohydrate content combined with a high protein-to-fat ratio prevents rapid postprandial blood glucose spikes. A highly suitable protein choice for managing blood sugar levels; consider using paneer made from low-fat milk. [ICMR-NIN, ICMR-NIN]
• Oats — Soluble fiber slows down gastric emptying and carbohydrate digestion, leading to a more gradual rise in blood glucose and improved insulin sensitivity. Choose minimally processed steel-cut or rolled oats rather than instant oats, and avoid pre-sweetened varieties. [ICMR-NIN, PubMed]
• Barley — Beta-glucan soluble fiber delays gastric emptying and slows carbohydrate absorption, preventing rapid postprandial blood glucose spikes. Incorporate barley as a whole grain substitute for refined grains like white rice to help manage glycemic response. [ICMR-NIN, PubMed]
• Cabbage — High fiber content and low glycemic index delay carbohydrate digestion and help prevent postprandial blood glucose spikes. Incorporate cooked cabbage as a bulk-adding, low-carb ingredient in main meals and side dishes. [ICMR-NIN, ICMR-NIN]
• Ragi — Its high soluble fiber and polyphenol content inhibit carbohydrate-digestive enzymes, slowing down starch digestion and stabilizing postprandial blood glucose. Incorporate as whole ragi flour or whole grains rather than highly refined instant mixes to keep the glycemic index low. [ICMR-NIN, ICMR-NIN, PubMed]
• Spinach — Possesses a very low glycemic index and glycemic load, and its fiber content slows glucose absorption, helping to prevent postprandial blood sugar spikes. Incorporate spinach as a frequent green leafy vegetable in main meals (such as in dals or subzis) to manage the glycemic load of your diet. [ICMR-NIN, PubMed]
• Amaranth — The combination of high dietary fibre and protein slows down the digestion of carbohydrates, preventing rapid postprandial blood glucose spikes. Incorporate whole amaranth grain into meals as a complex carbohydrate substitute for refined grains. [ICMR-NIN, PubMed]
• Jowar — High fiber and complex starches slow down digestion and carbohydrate absorption, leading to a gradual rise in blood glucose. Incorporate whole Jowar rotis or porridge to help manage postprandial blood sugar levels. [ICMR-NIN, PubMed]
• Soya — Low glycemic index and high protein/fiber content help delay carbohydrate digestion, leading to steadier blood glucose levels. An excellent dietary component for individuals managing type 2 diabetes due to its low glycemic impact and high satiety value. [ICMR-NIN, PubMed]
• Coffee — Bioactive components like chlorogenic acids help improve insulin sensitivity and regulate glucose metabolism. Opt for black or minimally sweetened coffee, as heavy additions of sugar or high-fat creamers can negate these positive metabolic effects. [PubMed]
• Olive Oil — Enhances insulin sensitivity and assists in blood glucose regulation by modulating cell membrane fluidity and reducing systemic inflammation. Incorporate olive oil into high-carbohydrate meals to help blunt postprandial blood glucose spikes. [PubMed]
• Whey — Whey protein can stimulate insulin secretion and slow down gastric emptying, thereby reducing blood glucose spikes when consumed before or with a carbohydrate-rich meal. Can be used under professional guidance to help manage postprandial glucose levels, provided it has no added sugars. [PubMed]
• Soybean — Low glycemic index, rich fiber, and high protein content slow glucose absorption and improve insulin sensitivity. Consume boiled soybeans or unsweetened soy products to help regulate blood sugar spikes. [ICMR-NIN, PubMed]
• Bajra — High fiber content and complex starches lower the glycemic index and improve insulin sensitivity. Choose bajra rotis or khichdi over refined wheat or white rice to help regulate post-meal blood sugar levels. [ICMR-NIN, PubMed]
• Millets — The rich content of soluble fiber and complex starches slows starch digestion and glucose absorption. Incorporate millets as a regular replacement for refined grains to support glycemic control. [ICMR-NIN, PubMed]
• Broccoli — The rich fiber content and low glycemic load slow carbohydrate digestion, preventing sharp blood glucose spikes. Incorporate lightly steamed or roasted broccoli into meals as a low-glycemic vegetable portion. [ICMR-NIN, USDA, PubMed]
• Flaxseed — Soluble dietary fibers slow down gastric emptying and carbohydrate digestion, helping to prevent rapid postprandial blood glucose spikes and improve insulin sensitivity. Integrating ground flaxseed into daily meals like rotis or curd can support overall glycemic management. [PubMed]
• Bitter Gourd — Contains insulin-like peptides and charantin that enhance peripheral glucose uptake and help regulate hepatic glucose output. Incorporate bitter gourd as a regular culinary vegetable in a balanced diet. If consuming concentrated juice, monitor blood sugar levels and consult your physician to adjust diabetic medications if needed. [ICMR-NIN, ICMR-NIN, PubMed]
• Methi — Soluble fibre (galactomannan) delays gastric emptying and slows glucose absorption in the intestines, while compounds like 4-hydroxyisoleucine may stimulate mild insulin secretion. Incorporate soaked methi seeds, sprouted seeds, or fresh methi leaves into daily meals as a supportive dietary measure for glycemic control. [ICMR-NIN, PubMed]
• Chia — Gel-forming soluble fibers slow gastric emptying and carbohydrate digestion, reducing postprandial blood glucose spikes. Incorporate soaked chia seeds into daily meals, such as adding them to unsweetened curd or buttermilk, to help manage glycemic response. [PubMed]
• Karela — Contains active compounds like charantin, vicine, and polypeptide-p which mimic insulin action and help improve peripheral glucose uptake. Incorporate cooked Karela as part of a balanced diet. Individuals on glucose-lowering medications should monitor blood sugar levels to prevent potential hypoglycemia. [PubMed]
• Amla — Polyphenols in amla help inhibit carbohydrate-hydrolyzing enzymes and mitigate oxidative stress associated with blood glucose fluctuations. Can be consumed fresh or as a dried powder as a low-glycemic, antioxidant-rich addition to a diabetes-friendly diet. [PubMed]
• Psyllium — Forms a viscous gel that slows gastric emptying and delays glucose absorption in the small intestine, improving overall glycemic response. Consuming psyllium before meals may support healthy blood sugar management when integrated into a high-fiber diet. [PubMed, ICMR-NIN]
• Isabgol — The viscous gel formed by psyllium slows down the digestion and absorption of carbohydrates, reducing sudden post-meal blood glucose spikes. Useful as a dietary fiber supplement to help stabilize blood glucose levels when taken with meals. [PubMed]
• Buckwheat — Contains a low-to-moderate glycemic index and bioactive compounds like D-chiro-inositol, which have been shown to facilitate insulin signaling and improve glucose tolerance. Incorporate whole buckwheat groats or traditional Kuttu rotis as complex carbohydrate substitutes for refined grains to help manage postprandial blood sugar spikes. [PubMed]
• Quinoa — The combination of high dietary fiber and protein slows down carbohydrate digestion, resulting in a lower glycemic response and improved glycemic control. Replace refined carbohydrates like white rice or maida with quinoa to help stabilize daily blood sugar fluctuations. [PubMed]
• Seitan — Its low-carbohydrate and high-protein composition results in a minimal glycemic impact, helping to prevent post-meal blood sugar spikes. A suitable plant-based protein source for glycemic control, provided it is cooked without high-sugar marinades. [USDA]
• Acesulfame — Acesulfame K is non-glycemic and does not trigger an immediate insulin or blood glucose spike, making it a safe acute alternative to sucrose. Can be used as an occasional sugar substitute, but should not replace whole-food sources of nutrition. [PubMed]
• Garlic — May enhance insulin sensitivity and support the regulation of fasting blood glucose levels through its antioxidant activities. Enjoy garlic in moderate culinary amounts as a flavorful, sugar-free seasoning option for diabetic-friendly meals. [PubMed]
• Turmeric — Curcumin help improves insulin sensitivity, assists in glycemic control, and reduces inflammatory markers associated with insulin resistance. Use turmeric as a staple spice in balanced, high-fiber, and low-glycemic meals to support overall metabolic wellness. [PubMed]
• Lemon — Extremely low glycemic index and low carbohydrate load. Citric acid may also delay starch digestion, mitigating postprandial glucose spikes. Use lemon juice as a low-glycemic, flavor-enhancing replacement for high-calorie sauces, dressings, and artificial flavorings. [USDA, PubMed]
• Green Tea — Polyphenols in green tea may improve insulin sensitivity and facilitate better glucose uptake in peripheral tissues. Drink green tea without any added sugar, honey, or artificial sweeteners to preserve its glycemic benefits. [PubMed]
• Tea — Active polyphenols in unsweetened tea may improve insulin sensitivity and assist in regulating glucose metabolism. Consume tea without added sugar or condensed milk to maximize metabolic benefits and prevent blood sugar spikes. [WHO, PubMed]
• Xanthan Gum — As a soluble fiber, it increases viscosity in the digestive tract, which can slow down stomach emptying and delay glucose absorption. Can be safely used as a low-glycemic thickener in diabetic-friendly diets, though the actual quantity consumed in food is typically too small to yield therapeutic blood sugar reduction. [PubMed]
• Ashwagandha — Enhances glucose uptake in skeletal muscle cells and improves insulin sensitivity. May assist in blood sugar management; however, individuals on glucose-lowering medications should monitor blood sugar levels. [PubMed]
• E415 — As a soluble fiber, it can delay gastric emptying and slow down carbohydrate absorption, helping to moderate postprandial blood glucose spikes. Can be safely consumed in food products as part of a diabetic-friendly diet, though it should not replace whole-food fiber sources. [PubMed]
• Mushroom — Low glycemic index and glycemic load, coupled with prebiotic fibers that help stabilize blood sugar levels. Can be safely integrated as a low-carbohydrate, high-fiber vegetable substitute in daily meals. [ICMR-NIN, PubMed]
• Cucumber — Very low carbohydrate load and glycemic index prevent postprandial glucose spikes. Enjoy cucumber slices as a safe, non-starchy vegetable option to manage blood glucose levels. [ICMR-NIN, PubMed]
• Celery — Has an extremely low glycemic index and load, causing minimal impact on postprandial blood glucose levels. A highly suitable, low-carbohydrate vegetable to include in glycemic-controlled meal plans. [ICMR-NIN, USDA]
• Cauliflower — Low glycemic index and high dietary fiber delay glucose absorption, preventing rapid blood sugar spikes. Incorporate as a low-carb alternative to grains (e.g., cauliflower rice) to help manage daily carbohydrate intake. [ICMR-NIN, USDA]
• Red Bell Pepper — Low glycemic index and high fibre content slow down carbohydrate digestion and absorption, preventing rapid spikes in blood glucose. A safe, nutrient-dense, low-carbohydrate vegetable choice to include regularly in diabetic-friendly meal planning. [USDA, PubMed]
• E412 — Creates a viscous gel matrix in the digestive tract that delays gastric emptying and slows the enzymatic digestion and absorption of carbohydrates. Consuming foods containing soluble fibers like guar gum can support glycemic control by preventing rapid blood glucose spikes. [PubMed]
• Beetroot — Its dietary fiber content slows down carbohydrate absorption and glycemic response, while antioxidant betalains may support metabolic health. Enjoy beetroot in portion-controlled amounts as part of fiber-rich meals to avoid sudden glycemic spikes. [ICMR-NIN, PubMed]
• Hibiscus — Polyphenols in hibiscus may modulate carbohydrate metabolism enzymes and support insulin sensitivity. Brew the flowers without added sugar or honey to enjoy a tart, diabetic-friendly beverage. [PubMed]
• Asparagus — The soluble dietary fiber in asparagus slows digestion and glucose absorption, aiding postprandial glycemic control. Incorporate steamed or lightly roasted asparagus as a low-glycemic side dish to help stabilize meal-time blood sugar. [ICMR-NIN, PubMed]
• Skimmed Milk — It has a low glycemic index and provides protein which helps slow down digestion, assisting in stable postprandial glucose levels when consumed in moderation. Include in moderation as part of a balanced carbohydrate-counted diet, avoiding added sugars. [ICMR-NIN, ICMR-NIN, PubMed]
• Cherry — The dietary fiber and antioxidant polyphenols help slow down sugar absorption and may improve insulin sensitivity. Enjoy fresh, whole cherries in moderate, portion-controlled amounts rather than juices to prevent blood sugar spikes. [ICMR-NIN, USDA, PubMed]
• Walnut — The combination of low glycemic index, healthy fats, and fiber helps stabilize postprandial blood glucose levels and supports insulin sensitivity. Use as a healthy, low-glycemic mid-meal snack to help manage daily glycemic loads. [ICMR-NIN, PubMed]
• Raw Cruciferous — Low glycemic load combined with high dietary fiber delays carbohydrate digestion and absorption, mitigating postprandial glucose spikes. Incorporate raw cruciferous vegetables as salads or starters to help manage glycemic response during meals. [ICMR-NIN, ICMR-NIN, PubMed]
• Tannin — Tannins can inhibit key carbohydrate-hydrolyzing enzymes like alpha-amylase and alpha-glucosidase, potentially slowing glucose absorption. Incorporate moderate amounts of whole-food tannin sources, such as amla, berries, and legumes, as part of a balanced diet to support glycemic control. [PubMed]
• Moringa — Isothiocyanates and chlorogenic acid in moringa may help improve insulin sensitivity and regulate blood glucose levels. Can be consumed regularly as part of a balanced diet to support overall glycemic control, though it should not replace prescribed medications. [PubMed]

Foods to limit or avoid

• Sugar — Refined sugar has a very high glycemic index, causing rapid spikes in blood glucose and placing a heavy demand on pancreatic insulin secretion. Individuals with diabetes or prediabetes should strictly limit or avoid refined sugar to maintain glycemic control. [ICMR-NIN, PubMed]
• Maltodextrin — With a glycemic index ranging from 85 to 105, maltodextrin is absorbed into the bloodstream faster than table sugar, causing rapid glucose and insulin spikes. Individuals with diabetes or insulin resistance should strictly limit foods containing maltodextrin to maintain stable glycemic control. [USDA, PubMed]
• Dextrose — Dextrose is pure glucose and enters the bloodstream directly, causing immediate glycemic spikes that strain pancreatic insulin secretion. People with diabetes should avoid dextrose-sweetened foods, except when managing an acute episode of hypoglycemia under proper guidance. [ICMR-NIN, PubMed]
• Jaggery — Jaggery has a high glycemic index and consists largely of sucrose, causing rapid rises in blood glucose levels similar to refined table sugar. Individuals with diabetes should avoid using jaggery as a safe sugar alternative and manage its intake strictly under medical supervision. [ICMR-NIN, WHO]
• Glucose Syrup — Glucose syrup is rapidly absorbed into the bloodstream, causing immediate and significant blood glucose and insulin spikes, which degrades glycemic control over time. Individuals with diabetes or pre-diabetes should strictly avoid foods containing glucose syrup to prevent acute glycemic fluctuations. [ICMR-NIN, WHO, PubMed]
• Sucrose — Rapidly digests into glucose and fructose, causing acute blood glucose spikes and promoting systemic insulin resistance with regular use. People with diabetes or prediabetes should strictly limit or avoid refined sucrose to maintain healthy glycemic control. [ICMR-NIN, WHO, PubMed]
• Invert Sugar — The rapidly absorbable glucose and fructose cause sudden blood glucose spikes and may worsen insulin resistance. People with diabetes or prediabetes should avoid foods containing added invert sugar to prevent glycemic fluctuations. [ICMR-NIN, WHO]
• Corn Syrup — Rapid absorption of simple sugars causes immediate spikes in blood glucose levels and demands high insulin secretion, which can worsen insulin resistance over time. Avoid foods and beverages sweetened with corn syrup to maintain stable glycemic control. [ICMR-NIN, WHO, PubMed]
• High Fructose Corn Syrup — The rapid absorption of glucose paired with fructose-induced hepatic insulin resistance severely impairs glycemic control and insulin sensitivity. Strictly avoid foods and beverages containing high fructose corn syrup to maintain stable blood glucose levels. [ICMR-NIN, WHO, PubMed]
• Tapioca — The rapidly digestible gelatinized starch triggers quick glucose absorption, leading to sharp postprandial glycemic spikes. Limit intake strictly or pair small portions with high-fiber vegetables, healthy fats, and protein to slow down sugar absorption. [ICMR-NIN, PubMed]
• High Fructose — Excessive fructose metabolism in the liver leads to visceral fat deposition and hepatic insulin resistance, compounding systemic glucose intolerance. Eliminate or strictly limit beverages and foods sweetened with high fructose syrups to support healthy blood sugar management. [ICMR-NIN, WHO, PubMed]
• Suji — As a semi-refined grain with a moderate-to-high glycemic index, suji can cause faster blood glucose elevations compared to intact whole grains. Incorporate suji in moderation and always pair it with fiber-dense vegetables, protein (such as sprouts or curd), and healthy fats to slow digestion and glucose absorption. [ICMR-NIN, PubMed]
• Oat Milk — The enzymatic processing of oats into milk breaks down complex starches into maltose, a simple sugar, resulting in a higher glycemic index. Choose unsweetened versions, monitor portions, and pair with protein or healthy fats to slow digestion. [WHO, PubMed]
• Rice Milk — Due to enzymatic processing, rice starch is broken down into simple sugars, resulting in a high glycemic index that can cause rapid spikes in blood glucose levels. Consume in limited quantities, and pair with foods rich in fiber, healthy fats, or protein to slow carbohydrate absorption. [USDA, PubMed]
• Refined Wheat Flour — Rapid digestion and absorption of refined starches cause acute spikes in postprandial blood glucose and place higher demands on insulin secretion. Limit or avoid refined flour; prioritize complex carbohydrates and whole-grain options to maintain stable blood sugar levels. [ICMR-NIN]
• Wheat — While whole wheat has a moderate glycemic response due to its fibre content, refined wheat (maida) is rapidly digested, causing sharp spikes in postprandial blood glucose. Prefer minimally processed whole-grain atta (with visible bran) or khapli (emmer) wheat. Practice portion control and avoid refined wheat products. [ICMR-NIN, ICMR-NIN]
• Honey — Although honey has a slightly lower glycemic index than refined sucrose, it is rich in simple sugars (fructose and glucose) and causes a rapid rise in blood glucose levels. Monitor portion sizes closely and treat honey as an added sugar; it should not be considered a safe sugar substitute for individuals managing diabetes. [ICMR-NIN, WHO, PubMed]
• Rice — Refined white rice is rapidly digested, causing sharp increases in blood glucose levels due to its high glycemic index and lack of fiber. Choose minimally polished, parboiled, or brown rice. Practice portion control and pair rice with fiber-rich vegetables, pulses, and healthy fats to reduce the overall glycemic load of the meal. [ICMR-NIN, PubMed]
• Lactose — Lactose is metabolized into glucose and galactose, contributing directly to glycemic load, although it has a lower glycemic index compared to sucrose or glucose. Monitor total carbohydrate intake from dairy and integrate lactose-containing foods mindfully into balanced meals to avoid rapid blood sugar fluctuations. [ICMR-NIN, PubMed]
• Semolina — Standard refined semolina has a high glycemic index because its fiber content is largely stripped, leading to rapid carbohydrate digestion and subsequent postprandial blood glucose spikes. Consume in strict moderation. Always pair suji dishes with abundant high-fiber vegetables, pulses, or healthy fats to slow down glucose absorption. [ICMR-NIN, PubMed]
• Banana — As bananas ripen, their starches convert into simple sugars (glucose, fructose, and sucrose), raising their glycemic index and potentially elevating postprandial blood glucose. Opt for slightly underripe bananas, limit portion sizes, and consider pairing them with healthy fats or proteins (like nuts) to slow sugar absorption. [ICMR-NIN, ICMR-NIN, PubMed]
• Dates — Dates contain a high concentration of simple sugars (fructose and glucose). Even though they have a low-to-moderate glycemic index due to their fiber content, excess consumption can lead to rapid blood glucose spikes. Consume in strict moderation (e.g., 1-2 dates at a time) and pair them with healthy fats or proteins, like almonds or walnuts, to slow glucose absorption. [WHO, PubMed]
• Modified Starch — Being a highly processed and refined carbohydrate, it is rapidly broken down into glucose, potentially causing postprandial blood sugar spikes. People with diabetes should limit foods containing modified starch and focus on complex carbohydrates with high dietary fiber. [ICMR-NIN, PubMed]
• Fructose — Chronic high intake of added fructose promotes hepatic insulin resistance, dyslipidemia, and visceral fat accumulation, worsening overall glycemic control over time. Minimize added fructose in the diet. Rely on whole, fresh fruits as safe sources of natural fructose, as their fiber content slows down absorption. [ICMR-NIN, PubMed]
• Malt — Malt is rich in free sugars and simple carbohydrates which are rapidly absorbed, risking sharp rises in blood glucose levels. Limit intake of malted beverages and foods containing added malt extracts. Always account for its carbohydrate content in your daily meal plan. [ICMR-NIN, WHO]
• Rava — As a refined wheat product, standard rava has a moderate to high glycemic index and is digested relatively quickly, which can cause rapid spikes in postprandial blood glucose. Consume in moderation. Pair rava with fiber-dense vegetables, nuts, or a protein source (such as in vegetable upma) to help lower the overall glycemic load of the meal. [ICMR-NIN, ICMR-NIN, PubMed]
• Sodium Nitrate — Nitrosamines formed from dietary nitrates/nitrites may induce oxidative stress and impair insulin sensitivity. Individuals managing or at risk of type 2 diabetes are advised to minimize their intake of processed meats containing nitrate additives. [PubMed]
• Hydrogenated Fat — High intake of industrial trans fats is associated with increased insulin resistance and low-grade systemic inflammation, which can impair glycemic control. Steer clear of ultra-processed commercial bakery products and deep-fried foods made with hydrogenated fats to manage diabetes risk. [ICMR-NIN, PubMed]
• Hydrogenated — Diets rich in trans fatty acids impair insulin sensitivity by altering cell membrane fluidity and increasing inflammatory cytokines. Limit intake of packaged foods containing hydrogenated oils to support optimal insulin function and glucose regulation. [ICMR-NIN, PubMed]
• White Rice — Due to low fiber and high starch content, white rice is rapidly digested and absorbed, causing sudden elevations in blood glucose and insulin demand. Moderate your portion sizes and avoid eating white rice in isolation. Pair it with fiber-rich vegetables, pulses (dals), or healthy fats to lower the glycemic response of the overall meal. [ICMR-NIN, PubMed]
• Beer — Alcohol can impair gluconeogenesis and increase the risk of delayed hypoglycemia, particularly if consumed on an empty stomach or alongside insulin therapies. People with diabetes should consult a healthcare professional regarding alcohol, exercise extreme caution, and never consume alcohol on an empty stomach. [ICMR-NIN, PubMed]
• Trans Fat — Disrupts cell membrane fluidity and promotes systemic inflammation, which worsens insulin sensitivity and glucose transport. Restricting trans fat intake is vital for maintaining insulin sensitivity and metabolic health. [ICMR-NIN, PubMed]
• Dalda — Diets rich in saturated fats and industrial trans fats promote systemic inflammation and worsen insulin receptor sensitivity. People with diabetes or prediabetes should avoid foods prepared with Dalda, focusing instead on monounsaturated and polyunsaturated fat sources. [ICMR-NIN, PubMed]
• Partially Hydrogenated — Diets rich in trans fats have been associated with increased insulin resistance, potentially worsening glycemic control. Limit consumption of processed and fried foods containing hydrogenated fats to support healthy blood sugar levels. [PubMed]
• Alcohol — Alcohol impairs hepatic gluconeogenesis, which can cause severe, delayed hypoglycemia, especially in individuals taking insulin or sulfonylureas. Conversely, sweet mixers can cause sharp glycemic spikes. Exercise extreme caution, monitor blood glucose closely, never drink on an empty stomach, and consult a healthcare professional regarding medication interactions. [ICMR-NIN, PubMed]
• Wine — Alcohol can suppress hepatic glucose production, increasing the risk of hypoglycemia (especially when fasting or taking insulin), while sweet dessert wines can cause rapid glycemic spikes. Consume wine with food to minimize the risk of sudden blood glucose drops, choose dry varieties, and monitor blood glucose levels closely. [ICMR-NIN, PubMed]
• Sodium Nitrite — Frequent consumption of processed meats preserved with nitrites has been linked to increased insulin resistance, oxidative stress, and an elevated risk of Type 2 Diabetes. Limit the consumption of processed and cured foods to help maintain optimal blood glucose regulation and metabolic health. [PubMed]
• E250 — Epidemiological studies suggest a link between high intake of processed foods preserved with nitrites and an increased risk of type 2 diabetes, potentially mediated by oxidative stress and nitrosamine formation. Limit or avoid processed meats cured with E250 if managing or preventing type 2 diabetes. [PubMed]
• Durum — Refined durum semolina (rava/suji) has a moderate-to-high glycemic index, which can cause rapid postprandial blood glucose spikes. Whole durum wheat has a lower glycemic response due to its intact fiber matrix. Opt for whole durum wheat pasta instead of refined white semolina pasta, and pair it with fiber-rich vegetables and lean proteins to help manage blood sugar levels. [ICMR-NIN, PubMed]
• Cashew Milk — While unsweetened cashew milk has a low glycemic impact, sweetened commercial varieties contain added sugars that can raise blood glucose levels. Always opt for 'unsweetened' labeled cashew milk to avoid unnecessary blood sugar spikes. [USDA, WHO]
• Palm Oil — Diets rich in saturated fatty acids have been linked to reduced insulin sensitivity compared to diets high in unsaturated fats. Focus on a balanced fat intake with emphasis on monounsaturated and polyunsaturated fats to aid in glycemic control. [ICMR-NIN, PubMed]
• Pomegranate — While containing beneficial antioxidants that can aid insulin sensitivity, it also contains natural sugars that can impact blood glucose levels if consumed in excess. Stick to moderate portions of the whole fruit (such as half a cup of arils) and avoid strained or commercially sweetened juices. [WHO, PubMed]
• Selenium — Some long-term trials indicate that high-dose selenium supplementation, beyond recommended daily limits, may be associated with an increased risk of type 2 diabetes. Fulfill your selenium requirements naturally through balanced dietary sources rather than high-dose supplements unless advised by a healthcare professional. [PubMed]
• Modified Food Starch — Being a highly refined starch, it is rapidly broken down into glucose, potentially causing quicker spikes in blood sugar compared to whole carbohydrates. Limit consumption of processed foods containing modified starches, and prioritize whole foods with intact fiber to help manage blood glucose levels. [ICMR-NIN, PubMed]
• Sucralose — It does not raise blood sugar immediately after consumption, but some clinical trials suggest that long-term use may affect insulin sensitivity and glucose tolerance. Can be used as an occasional sugar alternative to manage acute glucose spikes, but monitor individual metabolic response and consult a healthcare provider for long-term use. [PubMed]
• Calcium Propionate — Some peer-reviewed studies indicate that dietary propionate may stimulate a transient release of glucagon and other counter-regulatory hormones, potentially affecting insulin sensitivity over time. Individuals managing diabetes or insulin resistance should prioritize fresh, whole-grain breads over highly processed varieties containing chemical preservatives. [PubMed]

Educational information only — not medical advice. Consult a qualified doctor or dietitian before changing your diet, especially for a medical condition.

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