Diabetes: Understand, Manage & Live Well
Clear, medically reviewed guidance on type 1, type 2, prediabetes and gestational diabetes — covering symptoms, blood sugar levels, the Indian diabetes diet, treatment, and complications. Understand your numbers and what to do next.
What is diabetes?
Diabetes (diabetes mellitus) is a long-term condition in which blood sugar — glucose — stays higher than normal because the body either cannot make enough insulin or cannot use it effectively. Over time, high glucose can damage the heart, kidneys, eyes, and nerves.
Insulin is a hormone made by the pancreas that helps glucose move from the blood into cells for energy. In type 1 diabetes, the body makes little or no insulin. In type 2 diabetes — by far the most common form — the body becomes resistant to insulin and gradually makes less of it.
According to the World Health Organization (WHO), hundreds of millions of adults live with diabetes worldwide, and India has one of the largest numbers of affected people. Many remain undiagnosed because early type 2 diabetes often causes no obvious symptoms.
The good news: type 2 diabetes is largely preventable and manageable. Understanding your blood sugar numbers, eating well — including an Indian-style diabetes diet — staying active, and getting regular check-ups can help most people stay healthy and avoid complications.
- It's about insulin & glucoseDiabetes develops when insulin is missing, too low, or not working — so glucose builds up in the blood.
- Type 2 is the most commonAround 9 in 10 people with diabetes have type 2, which is strongly linked to lifestyle and is often preventable.
- It can be silent early onType 2 diabetes can develop for years without symptoms — which is why screening matters, especially after 30 in India.
- It's manageableWith diet, activity, monitoring, and medication when needed, most people keep their blood sugar in a healthy range.
Everything about diabetes, organised for you
From understanding your blood sugar numbers to diet, treatment, and preventing complications — explore every part of living well with diabetes.
Diagnosis & Blood Sugar Levels
Understand HbA1c, fasting and post-meal sugar, the glucose tolerance test, and what normal vs. high readings mean.
- HbA1c
- Fasting sugar
- Normal ranges
- OGTT
Symptoms
Thirst, frequent urination, fatigue, blurred vision, and early warning signs.
Types of Diabetes
Type 1, type 2, prediabetes, gestational, LADA and MODY.
Treatment & Medication
Metformin, insulin therapy, newer medicines, and lifestyle treatment.
Indian Diabetes Diet
Rice, roti, dal, fruits to eat and avoid, and a 7-day meal plan.
Complications
Neuropathy, retinopathy, kidney disease, heart risk and foot care.
Prevention
How to prevent type 2 diabetes with diet, activity and healthy habits.
Blood Sugar Monitoring
How to check sugar at home, glucometers and CGM devices.
Exercise & Activity
Walking, yoga, and home workouts that help control blood sugar.
Causes & Risk Factors
Genetics, obesity, diet, stress and other modifiable risks.
Not all diabetes is the same
The types of diabetes differ in cause, treatment, and who they affect. Find the type that's relevant to you and what it means.
- Autoimmune · usually diagnosed young Type 1 Diabetes The body's immune system stops insulin production. Needs lifelong insulin. Not caused by lifestyle.
- Most common · ~9 in 10 cases Type 2 Diabetes The body resists insulin and gradually makes less. Strongly linked to lifestyle and largely preventable — and often manageable with diet, activity, and medication.
- A warning stage · reversible Prediabetes Blood sugar is higher than normal but not yet diabetes. The best time to act — many people can return to normal levels.
- During pregnancy Gestational Diabetes High blood sugar that develops in pregnancy. Usually resolves after birth but needs careful monitoring.
- Rarer forms LADA & MODY Less common types — LADA (slow-onset autoimmune) and MODY (genetic) — sometimes mistaken for type 1 or 2.
Unsure which type applies to you? Only a doctor can confirm a diagnosis. Compare all types →
Start with our most-read guides
In-depth, medically reviewed guides that walk you through diabetes from understanding it to managing it day to day.
The Complete Guide to Diabetes
Everything in one place — what diabetes is, the types, symptoms, blood sugar targets, treatment, diet, and how to prevent complications. The ideal starting point if you or a loved one was recently diagnosed.
- Understand your blood sugar numbers
- Build a realistic Indian-diet plan
- Know when to see a doctor
Indian Diabetes Diet Guide
Rice, roti, dal and a practical 7-day meal plan for Indian kitchens.
Type 2 Diabetes Guide
Causes, management and how to put type 2 into remission where possible.
Diabetes Prevention Guide
Evidence-based steps to lower your risk — especially with a family history.
Normal Blood Sugar Levels
Fasting, post-meal and HbA1c targets — with an easy-to-read chart.
The complete diabetes index, A to Z
Every topic, test, complication and food question in one place. Search instantly or jump by letter.
Make sense of your numbers
Free, private calculators that run right here — nothing is sent or stored. Move the dial and see exactly where your reading lands.
HbA1c & Average Sugar Converter
Works both ways — and shows every unit at once.
An HbA1c of 6.5% or above is in the diabetes range. Many people aim for around 7%, but your personal target should be set with your doctor.
Estimated average glucose uses the ADAG study formula: eAG (mg/dL) = 28.7 × HbA1c − 46.7. Results are estimates for education — your lab report and personal targets take priority.
What is HbA1c?
HbA1c reflects your average blood sugar over the past 2–3 months — a bigger-picture view than a single finger-prick reading.
Why two units?
Indian labs usually report glucose in mg/dL; many international guidelines use mmol/L. We show both so nothing gets lost in translation.
What's a good target?
Many adults aim for an HbA1c near 7%, but targets are personal — age, other conditions and medicines all matter. Your doctor decides yours.
Catch it early, prevent it where you can
Type 2 diabetes can develop silently for years — and it's often preventable. Here's who should get tested, the tests used, and what genuinely lowers your risk.
Who should get screened?
Indians tend to develop diabetes younger and at lower body weight, so guidelines here often suggest testing earlier than in Western countries. Talk to your doctor if any apply to you.
- Adults from around age 30 in India — earlier than the 40–45 often quoted abroad.
- A parent or sibling with diabetes — family history raises your risk.
- Overweight, high blood pressure or high cholesterol, or a largely inactive routine.
- Had gestational diabetes, PCOS, or delivered a baby over ~4 kg.
HbA1c
No fasting needed
A single blood test showing your average sugar over 2–3 months. 6.5% or above usually indicates diabetes.
About the HbA1c testFasting Sugar (FBS)
After 8 hours fasting
Measures blood glucose before eating. 126 mg/dL or higher on two tests suggests diabetes.
About fasting sugarPost-Meal (PPBS)
2 hours after eating
Checks how your body handles a meal. Often paired with fasting sugar for a fuller picture.
About post-meal sugarGlucose Tolerance (OGTT)
Timed sugar drink
Tracks how your body clears a glucose load. Often used in pregnancy and borderline cases.
About the OGTTMost type 2 diabetes is preventable
Landmark trials show modest, lasting lifestyle changes can cut the risk of type 2 diabetes substantially in high-risk adults — often more effectively than medication.
- Move 30 minutes a day. A brisk walk after meals helps blunt sugar spikes.
- Rebalance the plate. More dal, vegetables and whole grains; less refined rice, sugar and fried food.
- Lose a little weight. Even 5–7% of body weight can sharply lower risk.
Diabetes questions, answered
Clear, medically reviewed answers to what people ask most. Tap any question to read more.
Common early signs include increased thirst, frequent urination, unusual tiredness, blurred vision, slow-healing cuts, and unexplained weight loss. Type 2 diabetes can also develop with no symptoms at all, which is why blood sugar testing matters even when you feel well.
For most adults without diabetes, fasting blood sugar is generally 70–99 mg/dL, and below 140 mg/dL two hours after eating. An HbA1c below 5.7% is considered normal. Your personal targets may differ, so confirm them with your doctor.
Type 2 diabetes can sometimes go into remission — normal blood sugar without medication — especially with significant weight loss and lifestyle change early on. It is not a permanent cure, and blood sugar can rise again, so ongoing monitoring with your doctor is important.
In type 1 diabetes the body makes little or no insulin and needs lifelong insulin; it is autoimmune and not caused by lifestyle. In type 2 diabetes the body resists insulin and makes less over time; it is strongly linked to lifestyle and is often preventable and manageable.
Yes, in controlled portions. Rice and roti raise blood sugar, but they can fit a balanced diabetes diet when paired with protein, vegetables and dal, kept to sensible portions, and balanced across the day. Whole grains and smaller servings help blunt the rise.
An HbA1c of 6.5% or higher usually indicates diabetes, 5.7–6.4% suggests prediabetes, and below 5.7% is normal. Diagnosis is normally confirmed with repeat or additional tests by your doctor, not a single reading.
Family history does raise your risk, especially for type 2 diabetes, but genes are not destiny. Lifestyle factors like diet, weight and activity strongly influence whether type 2 develops, so prevention is very possible even with a family history.
See a doctor if you have symptoms like excessive thirst, frequent urination or unexplained weight loss, or if you are at higher risk. Seek urgent care for confusion, drowsiness, vomiting, fruity-smelling breath, or very high or very low sugar that won't correct.
Built on medical trust
Every page in our diabetes library is written by health professionals, reviewed by qualified doctors, and updated as medical evidence changes.
Medical disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions about diabetes or a medical condition. Read our full Medical Disclaimer.