Fact or Myth: Does Eating Sugar (Meetha) Cause Diabetes?
Verdict: Partly true. Eating sugar doesn’t directly give you diabetes, but a diet heavy in sugary drinks and sweets adds weight and liver fat, and that raises the risk of type 2 diabetes, especially in South Asians, who develop it at lower weights than many other groups.
In brief
- Verdict: Partly true; sugar is one brick in the wall, not the whole wall
- What is true: sugary drinks in particular are linked to higher type 2 risk, mostly through weight gain and fat around the liver and belly
- What to do instead: cut sweet drinks first, watch your waist, move daily, and get a fasting sugar or HbA1c test if you have risk factors
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Why “zyada meetha khane se sugar hoti hai” sounds right
The name does most of the work. In Urdu and Hindi we call diabetes “sugar”, so it feels obvious that eating sugar causes “sugar”. Once someone is diagnosed, they’re told to cut mithai and cheeni, which seems to confirm it. And most of us know someone who loved jalebi, had three sweet teas a day, and later got diabetes.
None of that is foolish. It’s a sensible guess from what people see. The science just turns out to be more interesting than the name.
What really causes diabetes, explained simply
Think of insulin as a key. After you eat, sugar (glucose) enters your blood, and insulin unlocks your cells so the sugar can go inside and be used for energy. Diabetes means sugar is piling up in the blood because the key is missing or the locks have become stiff.
Type 1: the key factory is attacked
In type 1 diabetes, the body’s own defence system destroys the cells in the pancreas that make insulin. It often starts in childhood or young adulthood. It isn’t caused by sweets, by diet or by anything a parent did. People with type 1 need insulin from the start, and no food change replaces it.
Type 2: the locks get stiff
Type 2 is far more common, and here the story is insulin resistance: the key is there, but the locks don’t turn easily, so the pancreas works harder and eventually can’t keep up. What stiffens the locks?
- Fat inside the belly and liver, more than weight in general
- Genes and family history: a parent or sibling with diabetes raises your risk clearly
- Inactivity: working muscles soak up sugar; idle ones don’t
- Age, and for women, a history of diabetes in pregnancy or PCOS
- South Asian background: Pakistanis, Indians and Bangladeshis tend to store fat around organs and develop type 2 at younger ages and lower weights
- Poor sleep and long-term stress, which nudge hormones the wrong way
The part that is true: where sugar comes in
Sugar matters through the side door. Sweet drinks are the clearest example: a bottle of cold drink, a packaged juice or a sweet lassi delivers a lot of sugar in a few gulps without filling you up, so the calories add on top of meals. Over months that becomes weight, and the fructose half of sugar is handled by the liver, where too much of it gets turned into fat.
Liver fat is one of the main reasons locks stiffen. So a daily habit of sugary drinks is linked to higher type 2 risk, and that link is one of the better-agreed facts in nutrition.
But a person can get type 2 while eating little sugar, if the other bricks are there. Too much refined rice, maida, fried snacks and large portions of anything can do the same job. That’s why our piece on fruit sugar vs table sugar says whole fruit is fine while juice counts as sugar.
A glass of cold drink and a plate of extra chawal can end up in the same place: the liver.
Myth: if you don’t eat sweets, you can’t get diabetes
This is the dangerous half of the belief. Plenty of people with type 2 diabetes never had a sweet tooth. Their risk came from family, belly fat, a desk job and age. If you believe that skipping mithai protects you, you may skip the one thing that catches diabetes early, which is a blood test.
Type 2 often has no symptoms for years. By the time thirst, frequent urination or tiredness appear, the sugar may have been high for a long while.
What to do instead
- Swap sweet drinks first. Plain water, lemon water without sugar, lassi without sugar, or chai with less sugar, cut down gradually over two to three weeks so your taste adjusts.
- Measure your waist at the level of the belly button. South Asian guidance uses about 90 cm for men and 80 cm for women as the point where risk rises.
- Build your plate: half vegetables or salad, a quarter daal, chicken, fish or eggs, a quarter roti or rice. Keep rice to one katori rather than a heaped plate.
- Walk for about 10 to 15 minutes after your main meals. Our 20-minute walk plan makes it realistic.
- Get tested if you’re over 35, overweight, or have a parent or sibling with diabetes: a fasting sugar or HbA1c is enough to start. Our sugar level chart explains what the numbers mean.
Diabetes is diagnosed at a fasting sugar of 126 mg/dL or above, or an HbA1c of 6.5% or above, usually confirmed on a repeat test. A fasting sugar of 100 to 125 or HbA1c of 5.7 to 6.4% is prediabetes, the stage where lifestyle changes help most. See a doctor promptly for heavy thirst, passing urine often, unexplained weight loss, blurred vision or slow-healing cuts. Get emergency help for vomiting, deep fast breathing, confusion or a fruity smell on the breath, especially in a child or young adult, since this can be type 1 arriving suddenly. If you already take diabetes medicine or insulin, never start, stop or change it because you’ve cut sugar; eating less can drop sugar too low, and your doctor decides any change.
Questions people ask about sugar and diabetes
Does eating too much sugar cause diabetes?
Not directly. Too much sugar, especially from sweet drinks, adds weight and liver fat, which raise type 2 risk. Genes, belly fat, inactivity and age matter just as much.
Can you get diabetes without eating sweets?
Yes. Many people with type 2 rarely ate sweets. Family history, belly fat, refined carbs, large portions and low activity can all lead there.
What is the main cause of type 2 diabetes?
Insulin resistance, where the body’s cells stop responding well to insulin. It’s driven mostly by fat around the organs, genes, inactivity and age, with South Asians at higher risk.
Does sugar cause type 1 diabetes?
No. Type 1 is autoimmune: the body attacks its own insulin-making cells. Diet doesn’t cause it, and parents of children with type 1 did nothing wrong.
Is gur or shahad safer than white sugar for preventing diabetes?
Not in any real sense. Gur and honey are still mostly the same sugars and count the same way. Using less of any sweetener is what matters.
How many teaspoons of sugar a day is okay?
General health advice is to keep added sugar to under about 10% of daily calories, and less is better. For many adults that’s roughly 6 to 12 level teaspoons across the whole day, including hidden sugar in drinks and biscuits.
Do fruits cause diabetes?
Whole fruit isn’t linked to higher diabetes risk and fits most healthy diets. Juice is different, because it strips the fibre and delivers sugar fast.
Why do South Asians get diabetes more?
South Asians tend to store more fat around the liver and belly and have less muscle for the same weight. That means insulin resistance often starts at lower weights and younger ages.
Does sweet chai cause diabetes?
One cup doesn’t. Several heavily sweetened cups a day add up to a lot of sugar and calories, which over time raise risk. Cutting the sugar gradually is an easy win.
Can prediabetes go back to normal?
Often, yes. Losing a modest amount of weight, moving daily and cutting sweet drinks can bring numbers back into the normal range. Regular testing shows whether it’s working.
If a parent has diabetes, when should their children get tested?
Adults with a parent who has type 2 should ask their doctor about testing, often from their 30s or earlier if they’re overweight. Children with symptoms such as heavy thirst or bedwetting again need a same-day check.
More health beliefs, checked kindly and honestly, are in our Fact or Myth section.