Newly Diagnosed with Type 2 Diabetes: What to Expect in the First Six Months

Being told you have type 2 diabetes is a lot to take in. The good news is that the first six months after diagnosis are when good habits and the right medication make the biggest difference, and most South African patients find their control improves faster than they expect. This guide walks through what to expect, what tests and medications are usually involved, and how to build a long-term plan with your GP.

What type 2 diabetes actually is

Type 2 diabetes is a condition in which the body struggles to use insulin effectively. Insulin is a hormone produced by the pancreas that helps move glucose (sugar) from the bloodstream into cells, where it is used for energy.

In type 2 diabetes, two things happen. First, the body's cells become resistant to insulin, meaning they do not respond to it as well as they should. This is called insulin resistance. Second, over time, the insulin-producing cells in the pancreas (called beta cells) gradually produce less insulin than the body needs. The result is that glucose builds up in the bloodstream instead of being used by cells.

This process does not happen overnight. Most people with type 2 diabetes have had gradually rising glucose levels for years before diagnosis. The condition is strongly linked to being overweight, physical inactivity, family history, and age, though it can occur in people without obvious risk factors too.

The important thing to understand is that type 2 diabetes is manageable. With the right treatment, monitoring, and lifestyle adjustments, most people with type 2 diabetes live full, active lives. The first six months are about getting the foundations right.

The first consultation: what your GP should be doing

A thorough first consultation after a type 2 diabetes diagnosis involves more than just discussing medication. Your GP should be conducting a comprehensive assessment that covers your metabolic health, cardiovascular risk, and screening for any early complications. This is what good diabetes care looks like from the start.

Your first-visit workup checklist:

• HbA1c (your average blood glucose over the past 2 to 3 months)
• Fasting glucose
• Fasting lipid panel (total cholesterol, LDL, HDL, triglycerides)
• Kidney function: eGFR (estimated glomerular filtration rate) and urine albumin-to-creatinine ratio (ACR)
• Blood pressure
• Weight, BMI, and waist circumference
• Eye examination referral (dilated fundoscopy by an ophthalmologist or optometrist)
• Foot examination (checking sensation, pulses, and skin integrity)
• HIV status (relevant in the South African context; SEMDSA 2017 addresses the intersection of diabetes and HIV)
• Thyroid function (once at diagnosis; repeated if symptoms develop)
• Chronic benefit application with your medical aid

Not all of this may happen in a single visit. Your GP may spread the workup across two or three appointments in the first few weeks. The key is that all of these assessments are completed early, because they establish a baseline against which future results are measured.

Metformin: the first-line medication and what to expect

For most people newly diagnosed with type 2 diabetes, metformin is the first medication prescribed. It has been used for decades, has an excellent safety record, is inexpensive, and is widely available in South Africa under various brand names.

Metformin works primarily by reducing the amount of glucose produced by the liver and by improving the body's sensitivity to insulin. It does not cause low blood sugar (hypoglycaemia) when used on its own, and it is weight-neutral, meaning it does not cause weight gain.

How it is typically started: Your GP will usually begin with a low dose, commonly 500 mg once or twice daily, taken with meals. The dose is then gradually increased over one to two months to a target dose, typically between 1,000 mg and 2,000 mg daily in divided doses, up to a maximum of 2,550 mg daily. This slow titration is important because it reduces side effects.

Common side effects: The most frequent side effects are gastrointestinal: nausea, diarrhoea, bloating, and abdominal cramping. These are usually mild and tend to settle within the first few weeks as the body adjusts. Taking metformin with food helps considerably. If side effects persist, your GP may switch to an extended-release formulation, which is gentler on the stomach.

Important safety notes: Metformin is cleared by the kidneys. Your GP will check kidney function before starting and periodically thereafter. If kidney function (eGFR) falls below 45 mL/min/1.73m², the dose may need to be reduced. If eGFR falls below 30, metformin is generally stopped. Metformin should also be avoided in situations involving severe dehydration, acute illness, or conditions that reduce oxygen delivery to tissues.

If you experience side effects, mention them to your GP rather than stopping the medication on your own. There are almost always ways to manage them.

HbA1c and your glucose targets

HbA1c (glycated haemoglobin) is the single most important number in diabetes management. It reflects your average blood glucose level over the preceding two to three months, giving a much more reliable picture than a single glucose reading.

What the targets look like:

For most adults with type 2 diabetes, the general HbA1c target is below 7.0%. However, targets are individualised:

• A tighter target of below 6.5% may be appropriate for younger patients without cardiovascular disease, if it can be achieved safely without causing low blood sugar.
• A more relaxed target of below 8.0% may be suitable for older patients, those with limited life expectancy, or those with significant other medical conditions.

Your GP will discuss which target is right for you based on your age, overall health, and risk profile.

How often is HbA1c tested? Every three months until your target is reached, then every six months once your levels are stable. This means you will likely have two HbA1c tests in your first six months.

What to expect: Metformin typically reduces HbA1c by approximately 1% to 2% within three months. Lifestyle changes, particularly weight loss and increased physical activity, provide additional reduction. So if your HbA1c at diagnosis is, say, 8.5%, it is realistic to see it drop to around 7.0% or below within three to six months with medication and lifestyle changes combined.

Home glucose monitoring: If your GP recommends self-monitoring, typical targets are a pre-meal glucose of 4 to 7 mmol/L and a two-hour post-meal glucose below 10 mmol/L. Not everyone with type 2 diabetes needs to test at home, particularly if on metformin alone. Your GP will advise whether home monitoring is useful in your situation.

Beyond glucose: the bigger metabolic picture

Type 2 diabetes is not just about blood sugar. It is part of a broader metabolic picture that includes blood pressure, cholesterol, kidney function, eye health, and foot health. Managing all of these together is what reduces the risk of serious complications over time.

Blood pressure: The target for most people with diabetes is below 130/80 mmHg. High blood pressure and diabetes together significantly increase the risk of heart disease, stroke, and kidney damage. Your GP will check blood pressure at every visit and may prescribe medication if lifestyle changes alone are not sufficient.

Cholesterol and lipids: LDL cholesterol (the "harmful" type) should generally be below 2.5 mmol/L for most people with diabetes, and below 1.8 mmol/L for those with established cardiovascular disease. A fasting lipid panel is done annually. Statin therapy may be considered based on your overall cardiovascular risk assessment.

Kidney function: Diabetes can affect the kidneys over time. Annual screening with eGFR (a blood test) and urine albumin-to-creatinine ratio (a urine test) detects early changes before symptoms develop. Early detection allows treatment that can slow or prevent progression.

Eye health: Diabetic retinopathy (damage to the blood vessels in the retina) can develop without symptoms. A dilated eye examination by an ophthalmologist or optometrist should be done at diagnosis and then annually. Early detection and treatment can prevent vision loss.

Foot health: Diabetes can affect nerve sensation and blood flow to the feet, increasing the risk of ulcers and infections. A comprehensive foot examination should be done at diagnosis and at least annually thereafter. Between visits, check your feet daily for cuts, blisters, or changes in sensation, and wear well-fitting shoes.

Aspirin: Primary prevention with aspirin is no longer routinely recommended for all people with diabetes. Your GP will assess whether aspirin is appropriate based on your individual cardiovascular risk.

Lifestyle changes that actually work

Lifestyle modification is not an optional extra in diabetes management; it is a core part of treatment, as effective as medication in many cases.

Weight loss: If you are overweight, losing 5% to 10% of your body weight significantly improves blood glucose control, blood pressure, and cholesterol levels. For someone weighing 100 kg, that means a target of 5 to 10 kg. This does not need to happen quickly; a steady loss of 0.5 to 1 kg per week is sustainable and effective. Greater weight loss of 15% or more, particularly early after diagnosis, can lead to diabetes remission in some people, meaning HbA1c returns to below 6.5% without medication.

Eating well: There is no single "diabetes diet." The strongest evidence supports a Mediterranean-style eating pattern: plenty of vegetables, legumes, whole grains, nuts, seeds, fish, and olive oil, with limited red meat, processed foods, and refined carbohydrates. The key principles are reducing sugar-sweetened beverages, white bread, and processed snacks while increasing fibre intake (aim for at least 14 grams per 1,000 calories). A registered dietitian can help tailor an eating plan to your preferences, budget, and cultural context.

Physical activity: Aim for at least 150 minutes of moderate-intensity aerobic activity per week, such as brisk walking, spread over at least three days. Add two to three sessions of resistance training (bodyweight exercises, resistance bands, or weights) targeting major muscle groups. Even modest increases in activity improve insulin sensitivity and glucose control, independent of weight loss.

Smoking: If you smoke, stopping is one of the most important things you can do for your health. Smoking combined with diabetes dramatically increases the risk of heart disease, stroke, and peripheral vascular disease. Your GP can discuss cessation support options.

Alcohol: Moderate alcohol consumption is generally acceptable for most people with type 2 diabetes. However, alcohol can cause low blood sugar (hypoglycaemia) in people taking certain medications, particularly sulfonylureas or insulin. Discuss your alcohol intake with your GP so they can advise based on your specific medication regimen.

When metformin isn't enough: second-line options

If your HbA1c remains above target after three months of metformin at an adequate dose combined with lifestyle changes, your GP will discuss adding a second medication. This is a common and expected part of diabetes management, not a sign of failure. Type 2 diabetes is a progressive condition, and many people eventually need more than one medication.

The choice of second-line medication depends on several factors: your other medical conditions, cardiovascular risk, kidney function, weight, risk of low blood sugar, cost, and your preferences. Options available in South Africa include:

• Sulfonylureas (such as gliclazide and glimepiride): effective and affordable, but can cause low blood sugar and modest weight gain.
• DPP-4 inhibitors (such as sitagliptin, linagliptin, and vildagliptin): well tolerated, weight-neutral, low risk of hypoglycaemia.
• SGLT2 inhibitors (such as empagliflozin and dapagliflozin): reduce blood glucose, blood pressure, and weight. Importantly, these medications have demonstrated significant benefits for heart and kidney health in clinical trials, making them particularly valuable for patients with cardiovascular disease or kidney disease.
• GLP-1 receptor agonists (such as liraglutide and semaglutide): injectable medications that lower glucose, promote weight loss, and have proven cardiovascular benefits. Increasingly used in South Africa, though cost and availability may be considerations.
• Insulin: may be needed if glucose levels are very high at diagnosis or if other medications are insufficient.

The SEMDSA 2017 guidelines predate some of the landmark cardiovascular and renal outcome trials for SGLT2 inhibitors and GLP-1 receptor agonists. More recent international guidelines, including the ADA Standards of Care, recommend these classes as preferred second-line options for patients with established cardiovascular disease, heart failure, or chronic kidney disease, independent of HbA1c level.

Your GP will recommend the most appropriate option for your situation. This is an individualised decision, not a one-size-fits-all choice.

Your medical aid, your chronic benefit, and the practical side

Type 2 diabetes is listed on the Chronic Disease List (CDL) under the Council for Medical Schemes (CMS) Prescribed Minimum Benefits (PMB) regulations. This means that all registered medical schemes in South Africa are legally required to cover the diagnosis, treatment, and ongoing management of type 2 diabetes according to PMB regulations.

What this means practically:

• Your GP submits a chronic application to your medical aid on your behalf. Once approved, you are registered as a chronic patient, which unlocks funded medications, regular monitoring blood tests, and specialist referrals where clinically indicated.
• Metformin and most first-line diabetes medications are covered under PMB benefits. Coverage for newer medications (such as SGLT2 inhibitors and GLP-1 receptor agonists) varies by scheme and benefit option; your GP or scheme can clarify what is available on your plan.
• Pathology (blood tests) for diabetes monitoring, including HbA1c, kidney function, and lipid panels, is processed through South African laboratories such as Ampath, PathCare, and Lancet. Most GP consultations include order forms for these tests under medical aid benefits.
• Some GP practices in South Africa are licensed to dispense medication directly from the practice, which can be convenient and may reduce pharmacy dispensing fees. See our fees and accepted schemes for more information.

If you do not have medical aid, diabetes care is available through public sector clinics and hospitals. Metformin and essential monitoring are available in the public health system, though waiting times and access to newer medications may differ.

Six months in: what "well-controlled" looks like

After six months of treatment and lifestyle adjustment, here is what "doing well" generally looks like:

• HbA1c trending toward or at your individualised target (below 7.0% for most).
• Blood pressure at or near 130/80 mmHg.
• Weight stable or modestly reduced if you started overweight.
• No episodes of hypoglycaemia (low blood sugar).
• Baseline screening completed: eyes examined, feet checked, kidney function tested, lipid panel done.
• Chronic benefit registered with your medical aid.
• Engagement with follow-up: attending regular GP appointments and completing recommended blood tests.

If some of these targets have not been met, that is not unusual and not a personal failure. Type 2 diabetes is a complex condition, and getting the right medication combination and lifestyle balance takes time. The important thing is that you are engaged with your GP and working toward these goals together.

When things are not going to plan: Not reaching your HbA1c target within three to six months is common. It may mean the medication dose needs adjusting, a second medication needs adding, or the lifestyle plan needs revisiting. Side effects should be reported to your GP rather than tolerated silently; alternatives almost always exist.

Diabetes distress is a recognised and common experience. The constant demands of managing a chronic condition, including medication, monitoring, dietary changes, and worry about the future, can take a significant emotional toll. Studies suggest that more than a third of people with type 2 diabetes experience clinically meaningful diabetes distress. This is not a sign of weakness; it is a normal response to a demanding situation. If you are feeling overwhelmed, anxious, or low in mood, raise this with your GP. Effective support is available, including counselling, diabetes self-management education, and referral to appropriate professionals where needed.

When to see your GP, and why continuity matters

Type 2 diabetes is a long-term condition that benefits enormously from a consistent relationship with a GP who knows your history, understands your goals, and can adjust your treatment plan as things change over time.

In the first six months, you will typically see your GP every one to three months. After that, once your diabetes is stable, visits every three to six months are usual, with annual comprehensive reviews that include the full screening workup.

Reasons to see your GP sooner than your next scheduled appointment include:

• Persistent symptoms of high blood sugar: excessive thirst, frequent urination, unexplained weight loss, blurred vision, or fatigue.
• Symptoms of low blood sugar (if on sulfonylureas or insulin): shakiness, sweating, confusion, or feeling faint.
• Medication side effects that are affecting your quality of life.
• Feeling overwhelmed or distressed about managing your diabetes.
• Any new health concerns, particularly chest pain, shortness of breath, changes in vision, or foot wounds that are not healing.

Continuity of care, seeing the same GP who understands your full picture, is one of the strongest predictors of good long-term diabetes outcomes. A GP who knows you can interpret your results in context, anticipate problems, and make timely adjustments to your care plan. Learn more about our approach to chronic disease management. You can also book a consultation directly.