World Diabetes Day: Why India's 101 Million Cases Need Early Action
World Diabetes Day falls on 14 November. This year's theme is early action. Here is what diabetes actually is, India's numbers, and the warning signs people miss.
World Diabetes Day falls on 14 November every year, and 2026 is no exception. It is not a public holiday and brings no new rule, but it exists because diabetes keeps growing quietly, often for years, before anyone notices. This year's global campaign theme, set by the International Diabetes Federation, is "Early action on diabetes," built around catching the disease and its risk sooner rather than later.
The date itself marks the birthday of Sir Frederick Banting, who co-discovered insulin with Charles Best in 1921, a discovery that turned a once-fatal diagnosis into a manageable condition.
What diabetes actually is
The World Health Organization (WHO) describes diabetes as a condition where the pancreas does not make enough insulin, or the body cannot properly use the insulin it makes. Insulin is the hormone that moves sugar out of the blood and into cells for energy. Without enough of it working properly, sugar builds up in the blood instead.
There are three main types. Type 1 means the body makes little or no insulin, so daily insulin treatment is required; WHO says its cause and prevention are still not known. Type 2, which makes up more than 95% of all cases, develops when the body stops using insulin effectively, and it is often preventable. Gestational diabetes appears during pregnancy and is usually picked up through routine prenatal screening rather than symptoms.
The numbers, globally and in India
WHO's latest figures show 830 million adults were living with diabetes in 2022, up from 200 million in 1990. That is 14% of all adults worldwide, roughly double the 7% rate in 1990. Nearly 6 in 10 adults over 30 with diabetes were not taking any medication for it in 2022, and diabetes and the kidney disease it causes were linked to about 2.4 million deaths in 2023.
India's own numbers, from the ICMR-India Diabetes (ICMR-INDIAB) study published in The Lancet Diabetes & Endocrinology, are stark: a national survey of over 1.13 lakh adults across 31 states and union territories, carried out between 2008 and 2020, found a diabetes prevalence of 11.4%, working out to about 101 million people, roughly 1.68 times higher than an older estimate of 60 million. The same study found another 136 million people living with prediabetes, meaning their blood sugar is higher than normal but not yet in the diabetic range.
Why "early action" is this year's focus
The World Diabetes Day campaign points to a global gap between how many people have diabetes and how many know it. It cites an estimated 252 million adults living with undiagnosed diabetes worldwide, most of them with type 2, and warns that up to half of people with type 2 already have complications by the time they are diagnosed. The campaign's own projection puts global cases at 853 million by 2050 if current trends continue.
That gap between onset and diagnosis is exactly what "early action" targets: testing people before symptoms force the issue, not after.
Warning signs and risk factors
Type 2 diabetes can develop so slowly that symptoms go unnoticed for years. WHO lists the common signs as being unusually thirsty, urinating more often than normal, blurred vision, persistent tiredness, and unexplained weight loss. The main risk factors for type 2 are carrying excess weight, low physical activity, and family history.
Left unmanaged, diabetes can damage blood vessels and nerves over time, raising the risk of blindness, kidney failure, heart attack, stroke, and lower-limb amputation.
What to actually do
Get tested if you are at risk
A blood glucose test is simple and inexpensive, and it is the only way to know for certain, since early type 2 diabetes often has no obvious symptoms.
Move for at least 150 minutes a week
WHO's prevention advice centres on regular moderate exercise, such as brisk walking, spread across the week.
Rethink your plate, not just your willpower
Favour whole grains, vegetables and pulses over refined carbohydrates and sugary drinks, and go easy on saturated fat.
Watch your weight, gently
Even a modest, sustained weight loss meaningfully lowers type 2 diabetes risk for people who are overweight.
Don't smoke
Tobacco use adds to diabetes risk and worsens its complications, including on the heart and blood vessels.
Ask about screening at work or in your family
Many clinics and some workplaces run free or low-cost glucose screening camps around World Diabetes Day; use one if it is available to you.
What most people miss
- A normal weight does not rule out type 2 diabetes. Family history and age raise risk even in people who are not overweight.
- Prediabetes usually has zero symptoms, which is exactly why it is normally found through a routine test, not a complaint.
- Type 1 diabetes is not caused by diet or lifestyle, and nothing currently known can prevent it; it is a different disease from type 2 despite the shared name.
- The rising national case count partly reflects better testing and an ageing population, not only worse habits. That does not make the numbers less serious, but it is not purely a story of decline.
If you want to understand the newer medicines now used alongside diet and exercise for type 2 diabetes and obesity, see our earlier explainer on [GLP-1 medicines](/post/glp-1-medicines-explained-what-they-are-and-what-to-know).
