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If type 2 diabetes runs in your family, it’s a question that tends to sit in the background: Is this inevitable for me?

You might have seen parents, siblings, or relatives with type 2 diabetes. You might have been told your blood glucose is “a bit high” or that you’re at risk. And as you age, it can start to feel like it’s only a matter of time.

But genetics isn’t the whole story. Our partners at Defeat Diabetes explain more.

Why it can feel out of your control

Family history does increase your risk of developing type 2 diabetes. That part is well established.

Certain inherited traits can affect how your body produces insulin, how sensitive your cells are to it, and how your blood glucose responds to food. If these traits run in your family, your body may be more prone to higher blood glucose levels over time.¹

That’s why type 2 diabetes often appears across generations.

But what’s often missing from the conversation is what influences whether that risk actually develops into disease, because genes don’t act in isolation.

Why type 2 diabetes isn’t inevitable

Even if you have a higher genetic risk, lifestyle plays a major role in how that risk unfolds.

What you eat, how often your blood glucose rises and falls, your level of physical activity, sleep, and body weight all influence how your body manages glucose day to day.

This is sometimes described as “genetic susceptibility”. It’s a predisposition for type 2 diabetes, but, importantly, it can be changed.

Large clinical studies have shown that people at high risk of type 2 diabetes can significantly reduce their chances of developing it through targeted lifestyle changes. One study found that participants reduced their risk of developing type 2 diabetes by 58% through changes in diet, physical activity, and weight management.² Follow-up studies showed these benefits persisted years later, showing that early changes can have a lasting impact.³

So while family history matters, it doesn’t determine your future on its own.

The different ways people approach prevention

There are several ways people try to reduce their risk of type 2 diabetes. Each can help, but they don’t all work in the same way.

1. General healthy eating and portion control

Eating a balanced diet that’s low in ultra-processed foods and sugars and reducing overall calorie intake can support weight loss, which is associated with a lower risk. For some, this works well. For others, it can feel difficult to maintain if meals don’t keep them satisfied.

2. Physical activity

Regular movement improves insulin sensitivity and supports overall metabolic health. It’s an important part of prevention, but on its own, it may not fully offset the impact of diet.

3. Weight-focused approaches

Because excess weight is linked to a higher risk, many strategies focus on weight loss. This can be helpful, but focusing only on weight can sometimes overlook what’s happening with blood glucose itself.

4. Carbohydrate-focused approaches

Since carbohydrates break down into glucose, reducing the overall carbohydrate load can help keep blood glucose levels more stable. For many people, this is one of the more direct ways to influence risk, particularly when meals are structured to keep them satisfied.

Why there isn’t one “right” way to prevent it

Even with all of this, there isn’t a single approach that works for everyone.

The difference often comes down to personal preference. A prevention approach that feels clear and structured for one person might feel rigid for another, while someone else won’t commit to anything until it makes sense to them.

If you’re trying to keep your blood glucose levels below the prediabetes or diabetes threshold, and the approach you’re following doesn’t fit into your way of life or personal beliefs, it’s much harder to sustain – and consistency is what matters most over time.

So, can you prevent type 2 diabetes?

For many people, the answer is yes – or at the very least, it’s possible to delay or significantly reduce the risk.

But it doesn’t come down to finding the “perfect” plan. It comes down to finding a prevention path you can actually follow.

Finding what works for you

With so many options, it’s not always obvious where to begin. Often, the missing piece isn’t effort; it’s having a clearer sense of what will actually work for you.

That’s where Defeat Diabetes can help. Their simple questionnaire is designed to give you a clearer sense of which prevention approach might suit you best, based on what’s getting in your way and how you’re most likely to make a change.

It takes just a couple of minutes, and you’ll receive a FREE personalised guide to improving your blood glucose — your way.

You can explore it here: Find what works for you

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References

1. McCarthy MI. Genomics, type 2 diabetes, and obesity. N Engl J Med. 2010;363:2339–2350.
2. Knowler WC et al. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med. 2002;346:393–403.
3. Knowler WC et al. 10-year follow-up of diabetes incidence and weight loss in the Diabetes Prevention Program Outcomes Study. Lancet. 2009;374:1677–1686.