The Role of Fiber in Managing Diabetes
Diabetes is a long-term medical disorder that results in increased blood sugar levels.. The majority of the food you eat is converted by your system into glucose, or sugar, which is then released into your bloodstream. In people with diabetes, the body either produces insufficient amounts of insulin or is unable to utilize the insulin that is produced effectively. A hormone called insulin facilitates the uptake of glucose by your cells for energy production. Too much blood sugar remains in your system occurs when there is insufficient insulin or when cells stop reacting to insulin, which over time can cause major health issues. While medication and physical activity are vital components of diabetes management, diet plays a fundamental role in controlling the disease. Among the various dietary factors that influence blood sugar control, fiber—especially dietary fiber—has been shown to be particularly beneficial and a good adjunct to management of high blood sugar levels, especially the post meal blood sugar spikes.
Fiber comes in two main forms: soluble and insoluble. Fiber is a form of carbohydrate that the body is unable to digest and process. Because it slows the absorption of sugar into the bloodstream, soluble fiber, which is present in foods like fruits, beans, and oats, can help control blood glucose spikes / levels upto a certain extent. Sharp blood sugar spikes are a regular problem for people with diabetes, and this can help reduce them. Insoluble fiber also supports gut health and facilitates digestion, both of which improve general wellbeing.
Understanding Diabetes:
Diabetes develops when the body either becomes resistant to the effects of insulin (Type 2 diabetes) or is unable to produce enough insulin (Type 1 diabetes). The hormone insulin, which is generated by the pancreas, helps cells absorb glucose from the bloodstream and use it to produce energy for all body processes and needs.. The poor control of blood sugar levels in diabetes can result in hyperglycemia, or elevated blood sugar, which over time can harm many organs and tissues. Maintaining blood glucose levels within a certain range requires a mix of medication, diet, exercise, and lifestyle changes for effective diabetes treatment.
What is Dietary Fiber:
The indigestible parts of plant-based foods that move through the digestive tract largely undigested—that is, not truly broken down by the body—are referred to as dietary fiber, a type of carbohydrate. Soluble and insoluble fiber are the two primary categories into which it is divided. While insoluble fiber stays intact during digestion, giving stool more volume and encouraging regular bowel movements, soluble fiber dissolves in water to form a gel-like material. Nuts, seeds, legumes, whole grains, fruits, and vegetables are common sources of dietary fiber. In contrast to other carbohydrate sources, fiber does not raise blood sugar levels and is not converted to glucose during digestion. This indicates that blood sugar levels are not adversely affected.
Types of Fiber
Dietary fiber is classified into two main categories: soluble and insoluble fiber. Both types offer unique benefits for diabetes management and overall health.
Soluble Fibre:
Dietary fiber that dissolves in water is known as soluble fiber. In the digestive tract, it creates a gel-like replacement. This kind of fiber is especially helpful for managing diabetes. It has a mushy, sticky texture and can be fermented by intestinal flora.
This type of fiber slows down the absorption and digestion of carbohydrates, which helps in partially managing blood sugar levels. In the intestines, it forms a thick gel that prevents the absorption of glucose. This lessens the chance of sudden rises in blood sugar following meals.
Insoluble Fibre:
Fiber that doesn't dissolve in water is known as insoluble fiber. Although it has less of an immediate effect on blood sugar, it is nevertheless very important for general health. The primary function of insoluble fiber is to support digestive health. By encouraging regular bowel motions and boosting stool volume, it helps revent constipation.
Additionally, this kind of fiber lowers the risk of diverticular illness and hemorrhoids. Additionally, it might aid in the elimination of toxins by binding and perhaps eliminating carcinogens from the digestive system.
Resistant Starch:
Because of its special qualities, resistant starch is occasionally seen as a third type of fiber, even though it isn't always classified as such.
Fermentable Fibre:
This group includes both soluble and insoluble fiber, but it stands out for the gut bacteria's capacity to ferment it.
The relationship between Fiber and Diabetes Blood Sugar Control:
Dietary fiber affects digestion and absorption, which is one of the main ways it helps partially maintain blood sugar levels. When combined with water, soluble fiber creates a viscous gel that inhibits stomach emptying and small intestine absorption of nutrients, including glucose. Blood sugar levels rise gradually as a result of this delayed absorption, avoiding sharp spikes and encouraging more stability throughout the day. Furthermore, meals high in fiber typically have a lower glycemic index (GI), which means that their effects on blood glucose levels are more gradual and slower than those of foods with a high GI. Additionally, sustained energy levels are facilitated by the gradual release of glucose into the circulation.
Glycemic Index and Fiber:
Foods that include carbohydrates are ranked according to how they affect blood glucose levels using a system called the glycemic index (GI). While foods with a high GI (70 or above) induce a quick surge in blood glucose levels, those with a low GI (55 or less) digest and absorb more slowly, raising blood sugar levels gradually. Many foods high in fiber, like fruits, vegetables, whole grains, and legumes, have a low GI, which makes them perfect for diabetics. You can lessen the chance of hyperglycemia and improve blood sugar regulation by including more of these foods in your diet. Read more about it in the blog post about the advantages of low-glycemic foods.
Benefits of High Fiber Diet in T2DM:
- A fiber rich diet is known to improve metabolic health, and foods high in fiber are good for type 2 diabetes because they include complex carbs that are difficult to digest, which lowers insulin production and also glucose absorption.
- According to several studies high DF intake significantly lowers the risk of getting diabetes, Insulin resistance indicators have been found to be inversely correlated with DF consumption.
- A high intake of dietary fiber, particularly soluble fiber beyond the levels recommended by the American Diabetes Association (ADA), can improve blood glucose control, reduce hyperinsulinemia, and lower plasma lipid concentrations.
- A low glycaemic-index, high-fiber diet significantly (p<0.001) lowers the area under the curve for insulin and glucose in overweight or obese patients with type 2 diabetes.
- Low consumption of DF (<29 g/day) was linked to increased prevalence of hypercholesterolemia (p=0.01) and higher LDL (p=0.001) than those with greater median intake of fibers in a dietary assessment study of urban Asian Indians with type 2 diabetes.
- Fiber-rich foods can be used to treat diabetes in conjunction with any medication to lower prandial hyperglycaemic deviations. In patients receiving insulin, they may also assist lower interprandial hypoglycemia. Furthermore, research indicates that even in individuals without diabetes, a moderate increase in fiber consumption from food or supplements might result in a considerable decrease in fasting plasma glucose and insulin levels as well as an increase in insulin sensitivity.
Other Benefits:
Gut Motility:
Perhaps the most well-known and valued of dietary fiber's many positive effects is its impact on gastrointestinal motility and constipation prevention. Numerous research back up this effect, which, given the facts at hand, seems unquestionable. Compared to the control group, participants in a randomized controlled double-blind study on the effects of "veg-powder" (made of chicory, broccoli, and whole grains) on constipation alleviation experienced significant improvements in constipation symptoms at 2 and 4 weeks, including stool hardness, frequency of defecation, and straining to defecate. The management of chronic constipation and irritable bowel syndrome (IBS) was investigated in relation to dietary fiber intake and limits in fermentable oligosaccharide, disaccharide, monosaccharide, and polyol (FODMAP-restricted diet). In all three of the trials on IBS-associated constipation and five of the seven studies reviewed, dietary fiber was helpful for chronic constipation. Overall IBS symptoms also seemed to be alleviated by the FODMAP-restricted diet. According to available data, dietary fiber has positive effects on gastrointestinal motility and is a useful management technique for constipation prevention and treatment.
Cardiovascular Disorders:
Dietary fiber has been linked to cardiovascular health prevention, according to research. Blood pressure, inflammatory marker levels, and serum cholesterol can all be improved with increased dietary fiber intake. There is a clear correlation between consuming more total dietary fiber and a lower risk of cardiovascular disease (CVD), according to a systematic evaluation of cohort studies.
Obesity:
Including more dietary fiber in the diet has been shown in several studies to lower the risk of weight gain and fat accumulation in women. This result could be attributed to dietary fibers capacity to satisfy hunger. It has also been noted that a high BMI is positively correlated with a poor intake of dietary fiber. The intestinal phase of digestion and macronutrient absorption is prolonged by viscous soluble fibers, which might increase hormone release during the dietary time and affect the metabolic pathways governing food intake.
Dyslipidemia:
A diet high in fiber improves lipid markers, particularly by lowering LDL cholesterol and total cholesterol. Serum triglycerides, LDL cholesterol, and total cholesterol have all been found to be negatively correlated with total DF intake, but high-density lipoprotein cholesterol is positively correlated with it. A cross-sectional study's results also revealed a strong correlation between higher plasma HDL cholesterol levels and increased DF intake. A high-fiber diet has been shown to significantly lower serum cholesterol in diabetic individuals, and these benefits have been observed to last for a considerable amount of time. It was discovered that water-soluble fibers were most successful in lowering serum LDL cholesterol levels, with little to no impact on HDL levels.
High-Fiber Foods for Blood Sugar Control:
People with diabetes or prediabetes should concentrate on including a range of high-fiber foods in their regular diet in order to properly control blood sugar. In addition to fiber, these foods contain vital vitamins and minerals that promote general health. The following top-notch fiber sources can aid with blood sugar regulation:
Whole Grains: Compared to refined grains, brown rice, quinoa, barley, and whole wheat bread have a lower glycemic index and are higher in fiber.
Legumes: Rich in fiber and protein, beans, lentils, and peas are excellent options for regulating blood sugar levels.
Fruits: Because they are particularly rich in fiber and antioxidants, berries, apples, and pears are great options for blood sugar regulation.
veggies: Low in carbs and high in fiber, non-starchy veggies like kale, spinach, and broccoli are perfect for a diabetes-friendly diet.
Nuts and Seeds: Protein, fiber, and good fats found in almonds, chia seeds, and flaxseeds aid in blood sugar regulation.
When eating foods high in fiber, it's crucial to regulate portion sizes to avoid overindulging and to keep blood sugar levels in check. When combined with protein and good fats, these foods high in fiber can give you sustained energy without raising your blood sugar levels.
Recommended Dietary Fiber Intakes:
Men between the ages of 19 and 50 should consume 38 g of the recommended Dietary Reference Intake (DRI) per day, while women should consume 25 g. For men over 51, the DRI is 31 g per day, and for women over 51, it is 21 g per day. Children aged 1–3 should consume 19 g per day, while those ages 4–8 should get 25 g per day. The DRI guidelines are 31 g/day for boys aged 9–13 and 38 g/day for boys aged 14–18. The DRI guidelines for girls aged 9 to 18 are 26 g per day. Despite the fact that dietary fiber has been demonstrated to have a number of positive health impacts, most Americans only consume 15 g of it a day on average, which is far less than the recommended daily consumption. There is no maximum amount of fiber that can be consumed, but each person has a different tolerance, and the most frequent adverse consequences of excessive fiber consumption include bloating and discomfort in the abdomen.
Best Ways to Incorporate Fiber into Your Diet:
- Eat a whole-grain cereal with at least 5 grams of fiber to start your day. Make sure the whole grain—such as whole wheat, whole rye, or whole oats—is listed first in the ingredients list.
- Choose meals containing at least a few grams of fiber per serving by reading the labels. Each serving of a high-quality fiber source contains 2.5–4.9 grams of fiber. Each serving of an excellent source contains at least 5 grams.
- For sandwiches, use whole-grain breads that have at least two to three grams of fiber each slice.
- Pick the full fruit instead of the juice. Up to twice as much fiber can be found in whole fruit as in a glass of juice.
- Add beans to your salads, chili, Mexican recipes, soups, stews, and egg dishes. At least one vegetarian meal a week should consist entirely of beans instead of meat.
- Try several foreign cuisines that employ whole grains and legumes in their major recipes, including Middle Eastern or Indian.
- Eat raw veggies as a snack with hummus or bean dip.
Another effective way to reduce post meal blood sugar spike is ‘Sugar Slayer ‘.It is a plant based blend that has been extensively studied and proven to be very effective and safe in reducing the post meal blood sugar spikes upto a maximum extent of 40%. It is very simple to use. One tablet has to be taken just before the carb / sugar rich meal or snack or beverage. It also helps reduce cravings and helps maintain stable blood sugar levels which leads to stable energy levels throughout the day.
Conclusion:
A high-fiber diet is recommended. 25–40 g/day would be the optimum diet for individuals with diabetes and related diseases.
*** This Article is Written by Vaishnavi Patil, MSc in Food Science and Nutrition. |