Choosing Sugar-Free Mithai This Diwali? Here's What Your Gut Wants You to Know

The Diwali sweet box arrives, and this time it comes with a reassuring label: Sugar-Free. You take a piece of kaju katli, try a little barfi and reach for another because, after all, there's no sugar added. A few hours later, your stomach feels unusually full. Your jeans are tighter around the waist, you're passing more gas than usual and you wonder whether something you ate disagreed with you. Could the sugar-free mithai be responsible? Possibly. Some sugar-free sweets contain sweeteners that are harder for your body to absorb. When they reach your large intestine, they can cause gas, bloating and sometimes loose stools. This doesn't mean sugar-free sweets are bad for everyone. It simply means that less sugar doesn't always mean easier digestion. Here's what happens inside your gut, which ingredients to look for and how to enjoy your Diwali favourites without unnecessary discomfort.

What does sugar-free mithai actually mean?

When a sweet shop advertises sugar-free kaju katli or barfi, it's natural to assume the sweet contains fewer calories and is healthier than the regular version. However, these are different things. According to the Food Safety and Standards Authority of India's (FSSAI) advertising and claims regulations, a food claiming to be free of sugars must contain no more than 0.5 g of sugars per 100 g of solid food. But there's an important difference between common labels:

• Sugar-free: The product must meet the permitted limit for sugar content.

• No added sugar: No sugar or other sweetening ingredients covered by the claim's conditions have been added. The food may still contain naturally occurring sugars.

• Reduced sugar: The product contains less sugar than a comparable version, but it isn't necessarily sugar-free.

And none of these claims automatically means the sweet is low in calories. A piece of mithai may still contain carbohydrates, milk solids, ghee, nuts and other ingredients that contribute energy. That's why checking the complete nutrition label matters more than relying on the words printed across the front.

Also read: Why do you crave sugar all the time?

Why can sugar-free mithai cause bloating and gas?

The answer often lies in the ingredients used to replace ordinary sugar. Some manufacturers use sweeteners called sugar alcohols, also known as polyols. Despite their name, they aren't the alcohol found in alcoholic drinks. Common examples include:

• Sorbitol

• Maltitol

• Xylitol

• Mannitol

• Isomalt

• Erythritol

These sweeteners can provide sweetness with fewer calories than ordinary sugar. However, their effects on digestion vary. The US Food and Drug Administration (FDA) identifies sugar alcohols as ingredients used in sugar-free foods, including sweets and confectionery. So why might your stomach react to them?

Your small intestine doesn't absorb all of them

When you eat regular sugar, your body breaks it down and absorbs it relatively efficiently. Some sugar alcohols behave differently. They are absorbed more slowly or incompletely in the small intestine. The portion that isn't absorbed continues towards your large intestine. Once there, two things can happen:

1. More water enters your intestine. Certain sugar alcohols draw water into the bowel, which can make stools looser.

2. Gut bacteria break them down. Bacteria ferment some of these sweeteners, producing gas that can contribute to bloating, discomfort and flatulence.

Researchers at Monash University explain that this combination of water movement and bacterial fermentation can cause digestive symptoms, particularly in sensitive individuals. Not every sugar alcohol behaves exactly the same way. Erythritol, for example, is largely absorbed before reaching the large intestine, so it generally causes less fermentation-related gas than sorbitol or mannitol. The amount you eat and your individual tolerance both matter.

Why does one person feel fine while another gets bloated?

Imagine two people sharing the same box of sugar-free sweets. One enjoys three pieces and feels perfectly comfortable. The other has two and spends the evening dealing with stomach discomfort. Neither reaction is unusual. Your digestive response depends on several things, including how much sweetener you've eaten, which sweetener was used and how sensitive your gut is.

People with irritable bowel syndrome (IBS) may be especially sensitive to certain sugar alcohols. A Monash University review of sweeteners and IBS discusses research showing that even a 10 g dose of sorbitol or mannitol can increase digestive symptoms in some people with IBS. These compounds belong to a group called FODMAPs, carbohydrates that can be poorly absorbed and contribute to symptoms in sensitive people. However, having IBS doesn't mean you must avoid every sugar-free product. Different sweeteners and serving sizes can affect people differently. The important thing is to recognise your own triggers rather than assuming that every sugar substitute will upset your stomach.

Is the sweetener always responsible?

Not necessarily. Diwali usually involves more than one box of mithai. There may be fried snacks, rich dinners, repeated cups of chai and sweets offered at every house you visit. Even without sugar substitutes, a change in your usual eating pattern can leave you feeling uncomfortable. Other possible contributors include:

• Rich, fatty foods: Mithai made with plenty of ghee, cream or nuts may feel heavy, particularly when eaten after a large meal.

• Milk ingredients: People with lactose intolerance may experience gas, bloating or diarrhoea after certain milk-based sweets.

• Large portions: Eating several sweets after a full dinner can increase feelings of fullness and discomfort.

• Fizzy drinks: Carbonated beverages served alongside snacks can add to bloating.

The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) notes that sugar-free products containing certain sweeteners, lactose-containing foods and other dietary factors can contribute to digestive gas. So, if your stomach feels unsettled after a celebration, don't immediately blame one ingredient. Think about the entire meal.

Does sugar-free mithai help control blood sugar?

Replacing regular sugar with certain sweeteners can reduce a sweet's sugar content. However, that doesn't automatically make the finished product suitable for unlimited consumption, especially if you have diabetes. According to Diabetes UK, sugar alcohols generally have less effect on blood glucose than ordinary sugar, but their calorie content and impact vary. Some sugar-free sweets still contain carbohydrates from ingredients such as milk, flour or other starches. Those carbohydrates can affect blood sugar. A sweet made with nuts and ghee may also contain a considerable amount of fat and calories. If you have diabetes, look at the total carbohydrate content and serving size, not just the sugar figure. Your healthcare team can help you understand how different sweeteners fit into your meal plan. Choosing sugar-free mithai can be a reasonable preference, but it isn't a free pass to eat more.

How to enjoy Diwali sweets without upsetting your stomach

You don't need to avoid mithai altogether. A few small changes can help you enjoy the celebration more comfortably.

1. Start with one small portion. If you're trying a new sugar-free sweet, have a small piece first instead of several at once.

2. Read the ingredients. Look for names such as sorbitol, maltitol, mannitol, xylitol and isomalt. If you've experienced bloating after similar products, these are worth paying attention to.

3. Don't assume sugar-free means unlimited. Even when a sweet contains less sugar, its other ingredients still contribute calories and carbohydrates.

4. Spread out your sweets. Having several pieces at different visits can add up. Give your digestion some time between rich meals and snacks.

5. Keep your regular meals balanced. Include dal, vegetables, whole grains and protein-rich foods instead of replacing meals with festive snacks.

6. Drink enough water. Choose water regularly through the day rather than relying entirely on sweetened or fizzy drinks.

7. Take a short walk after meals. Gentle movement may help with feelings of fullness and supports digestion without requiring a strenuous workout.

Most importantly, you don't have to finish every sweet you're offered. Enjoy the ones you genuinely like and save the rest for another day.

Also read: What is the best time to eat for better digestion, steady energy and weight control?

What if you're already bloated after eating mithai?

If you've eaten more sugar-free sweets than usual and now feel bloated, the discomfort may improve as the food moves through your digestive system. For mild symptoms, try eating smaller meals for a while, drinking water and avoiding more of the suspected sweetener. Don't immediately cut out entire food groups or start taking digestive supplements. If the problem keeps happening, a simple food diary can help you identify patterns. Note what you ate, the approximate portion, when symptoms started and whether the same thing happens again.

The NHS guidance on bloating recommends seeing a doctor if bloating is frequent, severe or doesn't go away. Seek prompt medical attention if bloating comes with persistent vomiting, blood in your stool, unexplained weight loss or other concerning symptoms. Sudden, severe abdominal pain needs emergency assessment. For recurring symptoms, a doctor can help determine whether food intolerance, IBS or another digestive condition is involved.

The sweetest part of Diwali is still the celebration

There's nothing wrong with choosing sugar-free mithai, and there's nothing wrong with enjoying a small piece of regular mithai either. What matters is understanding what you're eating. Some sugar substitutes can cause bloating or loose stools, particularly when eaten in larger amounts. Others are better tolerated. Your gut doesn't respond to the words on the box. It responds to the ingredients and how much you eat. This Diwali, enjoy the sweets, share them with family and give yourself permission to stop when you've had enough. A little awareness can make the celebration more comfortable, without taking the sweetness out of it.

References and sources

1. Food Safety and Standards Authority of India (FSSAI). Food Safety and Standards (Advertising and Claims) Regulations, 2018. Guidelines on sugar-free, no-added-sugar and reduced-sugar claims. Read the regulations

2. U.S. Food and Drug Administration (FDA). How Sweet It Is: All About Sweeteners. Information on sugar substitutes, including sugar alcohols used in sugar-free foods. Read the article

3. Monash University. What Are Polyols? Explains how certain sugar alcohols are absorbed and why they may cause bloating, gas and diarrhoea. Read the article

4. Monash University. Sweeteners and the Low FODMAP Diet. Discusses how different sweeteners can affect digestive symptoms, particularly in people with IBS. Read the article

5. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Treatment for Gas in the Digestive Tract. Dietary changes and everyday habits that may help manage digestive gas. Read the guidance

6. Diabetes UK. Sugar, Sweeteners and Diabetes. Guidance on sweeteners, carbohydrates and managing blood glucose. Read the guidance

7. National Health Service (NHS). Bloating. Common causes, self-care advice and symptoms that require medical attention. Read the NHS guidance

Medical disclaimer: This article is for general information and educational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. Digestive responses to sugar substitutes vary from person to person. If you have diabetes, irritable bowel syndrome (IBS), food intolerances or another digestive condition, speak to your doctor or a registered dietitian before making significant dietary changes. If you experience persistent bloating, severe abdominal pain, repeated diarrhoea or other concerning symptoms, seek medical advice. Always consult a qualified healthcare professional about your individual health needs.