Intermittent Fasting for IBS on the Low FODMAP Diet

If you're one of the millions of Americans who suffer from irritable bowel syndrome (IBS), you may be looking for a way to manage your symptoms. A low FODMAP diet is often recommended for those with IBS, as it can help to reduce inflammation and digestive discomfort. But what about intermittent fasting? Can this help to improve symptoms as well? In this blog post, we will explore the benefits of intermittent fasting for IBS and discuss how you can get started!


Intermittent fasting is beneficial for various health conditions, including weight loss, diabetes, and heart disease. Some people with IBS claim that intermittent fasting helps to improve IBS symptoms such as abdominal pain, bloating, and diarrhea. 


You may be used to eating three meals a day plus snacks. Intermittent fasting allows you to eat as much or as little as you like, but you must adhere to your schedule. Intermittent fasting has set times when you can eat, and other times you cannot. Intermittent fasting, unlike other diets, tells you when and what to consume. Many people believe that it can lead to better health and longer life expectancy.

How to intermittently fast

Intermittent fasting severely limits calories and requires fasting for a certain time period (intermittently). You are allowed to eat normally with very few restrictions for the rest of the day.

Intermittent fasting is basically a way to skip meals regularly. It can be daily, weekly, or monthly. These are just a few of the many approaches you can take


* Restricted time - You can eat all your meals within an 8-12 hour window, and then only drink water the rest.


* Alternate Day Fasting - Eating a normal amount of food one day and eating a small amount the next day; alternate between "fast" and "feast" days.


* 5:2 eating pattern -Eating regularly five days a week and then limiting to 600 calories each day the rest of the time. You eat very little and drink only water during fasting days.


* A period of intermittent fasting--Caloric intake may be restricted for a few days, but not on any other days. Fasting can be done for up to five consecutive days each month.


Intermittent fasting has many benefits.


Intermittent fasting is effective in weight loss. It is comparable to other diets. Yes, it is similar but not necessarily better.

Research on the effects of intermittent fasting on people's health is ongoing. It is unclear whether it can prevent or slow down the aging process.

Research on intermittent fasting and calorie restriction has been dominated by cells (e.g., yeasts), rodents and monkeys. It may increase exercise endurance, improve immune function, and help you live longer. It may also help prevent certain diseases such as heart disease, diabetes, certain cancers, or Alzheimer's. However, not all studies have shown it to be effective.

Clinical studies of intermittent fasting in humans have only been conducted for a few months. We know that intermittent fasting may reduce inflammation markers (C-reactive proteins), insulin sensitivity (blood glucose levels, insulin sensitivity), high blood pressure, and cholesterol.

Intermittent fasting is a good option for weight loss. Research suggests that intermittent fasting may reduce appetite in certain people by slowing down metabolism. People who intermittently fast are often more uncomfortable than others. Animal studies indicate that people overeat when allowed to eat as much or as little as they like. You will lose weight if you have a lower appetite.

How about increasing the life expectancy of humans? We don't yet know what intermittent fasting does to our lives.


How intermittent fasting can affect health


Our bodies naturally have survival mechanisms that allow us to adapt to fasting. This is necessary because humans have lived through many times when food was scarce throughout history.

When we don't eat enough calories, our bodies start using stored carbohydrates known as glycogen. The liver has enough glycogen to keep it going for 12-16 hours before running out of fuel. After 16 hours, the body switches to using fat for energy. Some fat can be used as fuel, while others are metabolized into biochemicals known as ketones. This is when our metabolism switches from a carbohydrate-burning to a fat-burning state. This new metabolic state that burns fat is called ketosis. Ketosis can cause other changes in the body. These changes are believed to be responsible for some of the health benefits associated with intermittent fasting.

Ketones provide a more efficient energy source than glucose for our bodies and can be used to keep many cells functioning even when we are fasting. This is especially true for brain cells, and it may explain why some animal studies have shown protection against declines in cognitive abilities such as Alzheimer's.

Ketones may also prevent certain cancers and other inflammatory diseases such as arthritis. Ketones may also reduce insulin levels, which could help prevent type 2 diabetes. However, too many ketones can be dangerous. More research is needed to understand the connections between ketones and health


Intermittent fasting can increase lifespan by increasing the molecular level of our DNA. As we age, our genes' switching on and off patterns change. In animals, limiting calories can slow down age-related changes and make them live a little longer.


More research is ongoing to better understand the effects of fasting on biological processes.


Considerations before you start intermittent fasting:


Like all significant dietary changes, you should discuss intermittent fasting with your healthcare provider.

Be aware that intermittent fasting can be dangerous if you have certain medical conditions. Fasting is not recommended if you have diabetes. Intermittent fasting can increase your risk of electrolyte abnormalities if you take diuretics, such as those for high blood pressure or heart disease.

Anyone under 18 years old, anyone with a history of eating disorders, or pregnant or nursing should not fast intermittently.

Side effects can occur when you alter your diet. People who reduce their calories or begin intermittent fasting may experience side effects such as fatigue, weakness, and headaches. They also have a decreased ability to maintain body temperatures in cold environments

Beyond the health risks and side effects, fasting is simply hard to do voluntarily--especially when it's for two or more days. Fasting can be counterproductive for some people who may feel compelled to indulge in too many "feast" days.

The National Institutes of Health states that "more research is needed to determine long-term effects of the diet on human health, and to provide information about when and how such diets might be used."


Tips for nutrition during intermittent fasting

Intermittent fasting is not easy. It can be difficult to fast intermittently. Having a support network, especially for the days you are fasting, can help.

Intermittent fasting is based on restricting what you eat and not what you eat. However, food quality is still important. No matter what your preferences or eating habits are, you still need to eat all the essential nutrients. Intermittent fasting does not mean you should eat too many high-calorie, nutrient-poor foods. Healthy fats, lean proteins, fruits, vegetables, legumes, whole grains, and healthy fats are all important. Avoid refined grains and sugar.

NOTE: Many fast days limit calories intake to between 500-600 calories per day.




Any diet change should be based on a healthy and sustainable lifestyle that will help you achieve your health goals. It is important to eat healthily and eat well. Intermittent fasting may be a good option if you are looking to lose weight and prevent disease.

A diet or eating style that works for one person may not work for another. It is important not to make major dietary changes without consulting your doctor or dietitian first.

If you're looking for more information on following the low FODMAP diet, join our free course for beginners. FODMAP 101 is the easiest way to learn about the low FODMAP diet, which can improve and even eliminate symptoms of IBS and SIBO. The program includes weekly food guides, a master meal plan with recipes, cooking videos, and more. Join here.


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