Sugar and sweetener myths, fact-checked with evidence

The family WhatsApp group has spoken: gud is "natural", stevia is "chemical", and sugar-free biscuits are "basically salad". Somewhere, a nutrition scientist sighs into their chai.

Most popular claims about sugar and sweeteners don't survive the evidence. Jaggery and honey still count as sugar, "sugar-free" isn't carb-free, stevia doesn't meaningfully raise glucose, and erythritol's heart link is an association, not proof. You can check any claim yourself with Trulo Compass, which returns a cited verdict.

Last updated: November 2026

The problem

Sweeteners are one of the most confusing aisles in any Indian store. Labels shout "natural", "zero" and "keto", forwards shout louder, and real studies rarely make it into the conversation.

The result: people swap one sugar for another, avoid foods that would actually help, or trust a "sugar-free" mithai a little too much.

Why it happens

Health claims spread because they are short and confident. Evidence is slower: it depends on who was studied, how many people, and whether a finding is a cause or just a link. That's why we built Trulo Compass, a beta tool that checks a food, sugar or diabetes claim against published research and returns a cited verdict of fact, myth or partial. Every source is rated with Scimago, OpenAlex and Oxford CEBM.

Here are nine claims we hear every week, checked against the published evidence.

What to do: the verdicts

1. "Jaggery and honey are healthier than sugar"

MYTH

Both count as free sugars, the kind WHO advises keeping under 10% of daily energy (WHO, 2015). In 43 adults with type 2 diabetes, coconut jaggery raised glucose about as much as cane sugar (Hewa Pathirana et al., 2022). Read our jaggery myth buster and honey vs sugar.

2. "Sugar-free means carb-free and diabetes-safe"

MYTH

In India, "sugar-free" means no more than 0.5 g of sugars per 100 g (FSSAI, 2021). It says nothing about the refined flour, fat or sugar alcohols inside. Products with 10% or more polyols must even warn that they "may have laxative effect" (FSSAI, 2022). Read the carbohydrate line, not just the front.

3. "Stevia raises blood sugar"

MYTH

Steviol glycosides are used in tiny amounts, and the US FDA notes that high-intensity sweeteners generally don't raise blood sugar (US FDA). Taste is the more common complaint: on its own, stevia can be slightly bitter.

4. "Erythritol is proven to cause heart attacks"

PARTLY TRUE

In over 4,000 adults in the US and Europe, those with the highest blood erythritol had about 1.8–2.2 times the risk of heart attack or stroke over three years, and erythritol made platelets clot more readily in lab tests (Witkowski et al., 2023). That is a real signal, but an association, not proof of cause. Trials are still needed.

5. "Allulose spikes glucose just like sugar"

MYTH

Allulose is a rare sugar the body barely uses for energy. A 2026 meta-analysis of human trials found that taking allulose with a meal lowered the post-meal glucose rise (Osborn et al., 2026). The honest caveat: long-term human data are still limited. Compare it with erythritol in allulose vs erythritol.

6. "Sweeteners are banned or unregulated in India"

MYTH

FSSAI permits specific sweeteners with limits and mandatory label statements, such as "Not recommended for phenylketonurics" for table-top aspartame (FSSAI, 2022). Our INS code decoder shows how to spot each one.

7. "Fruit is bad if you have diabetes"

MYTH

Whole fruit and juice behave differently. In three US cohorts of over 187,000 people, every three servings a week of whole fruit was linked to a slightly lower type 2 diabetes risk (HR 0.98), blueberries much more so (0.74), while the same amount of fruit juice was linked to higher risk (1.08) (Muraki et al., 2013). See whole fruit vs juice.

8. "Eating sugar causes type 1 diabetes"

MYTH

Type 1 diabetes is an autoimmune condition: the immune system attacks the insulin-making cells of the pancreas, and the exact cause is unknown (MedlinePlus). No food or sugar habit causes it, and no parent or child should carry that blame. Read our guide to growing up with type 1 diabetes.

9. "A short walk after meals lowers the spike"

FACT

In 41 adults with type 2 diabetes, a 10-minute walk after each meal lowered post-meal glucose by 12% compared with one 30-minute walk at another time; after dinner, by 22% (Reynolds et al., 2016). Details in walking after meals.

Did you know? Under FSSAI rules, a pack can say "sugar-free" with up to 0.5 g of sugars per 100 g (FSSAI, 2021). Zero on the label isn't always zero in the pack.

FAQ

Which sweetener is best for diabetes?
There's no single best one. Stevia, monk fruit and allulose barely raise glucose; sugar alcohols can upset the gut. Choose by label, taste and tolerance, and use less sweetness overall.

Is brown sugar or khand better than white sugar?
Count them as sugar. Like jaggery and honey, they are free sugars and count toward the same daily limit.

Are artificial sweeteners safe?
FSSAI permits approved sweeteners within limits and with label warnings. Some, like erythritol, have open questions, so read labels and follow research updates.

How does Trulo Compass work?
You ask a claim; it weighs published research and gives a cited verdict of fact, myth or partial. It's a beta, AI-generated tool, so check the sources it cites.

Save this scoreboard for the next family debate, and explore the science behind Trulo.

This article is for information, not medical advice. If you have diabetes or take medication, talk to your doctor before changing your diet.

Research & References

1. World Health Organization. WHO calls on countries to reduce sugars intake among adults and children. WHO, 2015. — Supports: free sugars include honey and syrups; keep under 10% of energy.
2. Hewa Pathirana HPDT, et al. Comparison of blood glucose responses by cane sugar versus coconut jaggery in type 2 diabetes patients. Journal of Future Foods, 2022. — Supports: similar glucose response to jaggery and cane sugar.
3. Food Safety and Standards Authority of India. Food Safety and Standards (Advertising and Claims) Regulations, 2018 — compendium. FSSAI, 2021. — Supports: "sugar-free" = not more than 0.5 g sugars per 100 g.
4. Food Safety and Standards Authority of India. Food Safety and Standards (Labelling and Display) Regulations, 2020 — compendium. FSSAI, 2022. — Supports: polyol laxative statement; aspartame phenylketonurics statement.
5. US Food and Drug Administration. How sweet it is: all about sweeteners. FDA. — Supports: high-intensity sweeteners generally don't raise blood sugar.
6. Witkowski M, et al. The artificial sweetener erythritol and cardiovascular event risk. Nature Medicine, 2023. — Supports: association with heart events; platelet findings.
7. Osborn L, et al. Glycemic and cardiometabolic effects of rare sugars allulose and tagatose: a systematic review and meta-analysis. American Journal of Clinical Nutrition, 2026. — Supports: allulose lowered post-meal glucose rise.
8. Muraki I, et al. Fruit consumption and risk of type 2 diabetes: results from three prospective longitudinal cohort studies. BMJ, 2013. — Supports: whole fruit HR 0.98, blueberries 0.74, juice 1.08 per 3 servings/week.
9. MedlinePlus (US National Library of Medicine). Type 1 diabetes. — Supports: autoimmune cause; exact cause unknown.
10. Reynolds AN, et al. Advice to walk after meals is more effective for lowering postprandial glycaemia in type 2 diabetes mellitus than advice that does not specify timing. Diabetologia, 2016. — Supports: 12% and 22% lower post-meal glucose.