Managing Type 2 Diabetes: A Complete Guide

What type 2 diabetes actually is

Type 2 diabetes is a condition in which the body still produces insulin but no longer responds to it properly, so glucose stays in the bloodstream instead of moving into cells. It develops gradually — often over five to ten years — which is why so many people are diagnosed during a routine check-up rather than because they felt unwell.

This gradual onset is the single most important thing to understand about the condition. By the time thirst, frequent urination, unexplained weight loss or slow-healing wounds appear, blood sugar has usually been high for a long time. Waiting for symptoms is not a safe way to decide whether to get tested.

How type 2 diabetes is diagnosed

Diagnosis is made on blood tests, and a single abnormal reading is not enough. We confirm on two separate occasions unless blood sugar is very high and symptoms are unmistakable.

Why prediabetes is worth taking seriously

A result in the prediabetes range is not a diagnosis of diabetes, and it is not a formality either. It is the window in which the condition is most reversible. Sustained weight loss in the range of five to seven per cent of body weight, combined with regular activity, is well established as delaying or preventing progression to type 2 diabetes.

In practice this is the group we most want to see back in six months. A prediabetes result that nobody follows up on tends to become a diabetes diagnosis three years later.

Eating well without giving up South Indian food

The advice patients most often arrive with is that they must stop eating rice. That is rarely realistic in a Chennai household where one meal is cooked for everybody, and an instruction nobody follows is worse than a smaller change that sticks.

What matters more is the proportion of the plate and what the rice is eaten alongside. Protein, vegetables and fibre slow the rate at which carbohydrate raises blood sugar, so the same quantity of rice affects you differently depending on what shares the plate with it.

• •Change the ratio, not the menu: Aim for half the plate as vegetables, a quarter as protein — dal, egg, fish, chicken, paneer — and a quarter as rice or another grain.
• •Prefer whole grains where you can: Hand-pounded or par-boiled rice, millets such as ragi and kambu, and whole-wheat chapati raise blood sugar more slowly than polished white rice.
• •Watch the liquids: Sweetened coffee and tea several times a day, fruit juice and soft drinks add up quickly. This is often the easiest large win available.
• •Do not skip meals to compensate: Long gaps followed by a large meal produce sharper sugar spikes, and are risky if you take medication that can cause hypoglycaemia.
• •Eat fruit whole: Whole fruit comes with fibre; juice does not. Portion matters, but fruit itself is not off-limits.

Physical activity that is realistic

Exercise lowers blood sugar directly, by allowing muscle to take up glucose without needing as much insulin. The usual target is about 150 minutes of moderate activity a week, which is thirty minutes on five days — brisk walking counts.

Two details make a disproportionate difference. First, a short walk after dinner blunts the largest sugar rise of the day for most people. Second, try not to leave more than two consecutive days without activity, because the improvement in insulin sensitivity after exercise fades within about 48 hours.

If you have heart disease, significant joint problems, or diabetic nerve damage in the feet, ask us before starting a new routine so we can adapt it rather than have you stop after a fortnight.

Monitoring: what the numbers mean

HbA1c measures the proportion of haemoglobin that has glucose attached to it, which reflects your average blood sugar over roughly the preceding three months. That averaging is why it is checked quarterly — testing it monthly tells you almost nothing new.

For most adults with type 2 diabetes the target is below 7%, but this is genuinely individual. An older patient living alone, or someone who has had a severe hypoglycaemic episode, may be safer with a slightly higher target, because the risk of a serious low outweighs the long-term benefit of tight control.

Home glucose monitoring is most useful when it answers a question — how a particular meal affects you, or whether an early-morning reading explains a symptom — rather than as a number recorded out of habit. Bring the log to your review; the pattern is more informative than any single value.

Screening for complications

Diabetes causes damage quietly, and the organs it affects give very little warning until the damage is advanced. This is why screening is scheduled rather than symptom-triggered.

• •Eyes: A dilated retinal examination once a year. Diabetic retinopathy is painless and does not affect vision until it is well established, but it is treatable when caught early.
• •Feet: A foot check at least annually, and at every visit if sensation is already reduced. Loss of protective sensation is what turns a small blister into a serious ulcer.
• •Kidneys: An annual urine test for protein plus a blood creatinine. Early kidney involvement is entirely symptomless.
• •Blood pressure and cholesterol: Checked at routine visits. Managing these alongside blood sugar does more to reduce cardiovascular risk than managing sugar alone.

When to contact us sooner

Between scheduled reviews, some things should not wait.

• •Repeated readings below 70 mg/dL, or any episode of shakiness, sweating and confusion that improves after eating.
• •Blood sugar persistently above 250 mg/dL, especially with thirst, drowsiness or vomiting.
• •Any foot wound, blister, crack or colour change — however small, and particularly if you cannot feel it.
• •New blurring of vision, or new numbness, burning or tingling in the feet.
• •Fever or an infection that is not settling, since illness raises blood sugar and blood sugar slows recovery.