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How Much Weight Do You Need to Lose to Put Type 2 Diabetes Into Remission?

In the DiRECT trial, remission rose from 7% to 86% as weight loss went from under 5 kg to 15 kg or more. What that means in pounds, stones and percent of body weight.

TYPE 2 DIABETES REMISSION

Dr. Sayantan Banerjee

10/31/20268 min read

If you take one number away from this article, make it 15 kg. That is about 33 pounds, or a little over 2 stone. In the best-known remission trial, people who lost that much had the highest chance of coming off their diabetes medicine with a normal HbA1c.

But that headline number hides a lot of useful detail. Some people need far less. Some need more. And for almost everyone, keeping the weight off matters as much as losing it in the first place. This article goes through the evidence and turns it into targets you can actually use, whether you think in kilograms, pounds or stones.

What the DiRECT trial found

DiRECT was a UK trial run in 49 GP practices in Scotland and the north east of England. People who had been diagnosed with type 2 diabetes within the previous six years followed a formula diet of about 825 to 853 calories a day for 12 to 20 weeks, then brought food back gradually with support to maintain their weight loss.

The one-year results were published in The Lancet. The researchers grouped everyone in the study, from both arms, by how much weight they had lost, and then looked at how many in each group were in remission.

Gained weight — Roughly in pounds: gained; In remission: 0%
Lost 0 to 5 kg — Roughly in pounds: 0 to 11 lb; In remission: 7%
Lost 5 to 10 kg — Roughly in pounds: 11 to 22 lb; In remission: 34%
Lost 10 to 15 kg — Roughly in pounds: 22 to 33 lb; In remission: 57%
Lost 15 kg or more — Roughly in pounds: 33 lb or more; In remission: 86%

The pattern is steady and very clear. Each extra 5 kg made remission much more likely. Nobody who gained weight reached remission. Almost nine in ten people who lost 15 kg or more did.

There is another important detail. Many of the people in remission were still in the overweight BMI range. They didn't need to reach a so-called ideal weight. What mattered was how much they lost from their own starting point.

What happened at two years

At two years, the researchers looked at people who had kept off at least 10 kg. Of these, 64% were in remission. People who had regained most of their weight had mostly lost remission.

This is the most practical finding in the whole trial. Losing weight opens the door to remission. Keeping it off is what holds the door open.

Evidence from other studies

The US Look AHEAD trial tested an intensive lifestyle programme in people with type 2 diabetes and overweight or obesity, without formula meals. In the first year, about 11.5% of the intervention group had at least partial remission, against 2% of those in the comparison group. Their weight loss was smaller than in DiRECT, which fits the same dose-response pattern. Less weight lost, less remission.

A Chinese randomised trial published in 2023 tested an intermittent calorie-restricted diet in people with type 2 diabetes and fairly low BMIs, many of them in the normal or just-overweight range. About 47% reached remission at six months, with an average weight loss of only about 6 kg. That is a small study of 72 people, but it shows that in leaner people, a smaller loss can be enough.

After bariatric surgery, where weight loss is often 25% or more of body weight, remission rates are higher still, at least in the first years.

Kilos or percent?

A fixed number in kilograms is easy to remember, but it isn't fair to everyone. 15 kg is 20% of body weight for someone who weighs 75 kg, but only about 11% for someone who weighs 135 kg.

The ADA's Standards of Care talk about weight loss as a percentage. They note that losing around 15% of body weight can have a disease-modifying effect in type 2 diabetes, and that remission becomes a realistic possibility at that level.

Here is what 10% and 15% look like at different starting weights:

75 kg (165 lb, 11 st 11 lb) — 10% loss: 7.5 kg (16.5 lb); 15% loss: 11.3 kg (25 lb)
90 kg (198 lb, 14 st 2 lb) — 10% loss: 9 kg (20 lb); 15% loss: 13.5 kg (30 lb)
100 kg (220 lb, 15 st 10 lb) — 10% loss: 10 kg (22 lb); 15% loss: 15 kg (33 lb)
115 kg (254 lb, 18 st 2 lb) — 10% loss: 11.5 kg (25 lb); 15% loss: 17.3 kg (38 lb)
130 kg (287 lb, 20 st 7 lb) — 10% loss: 13 kg (29 lb); 15% loss: 19.5 kg (43 lb)

A sensible working target for most people is 10% to 15% of starting weight. If you have had diabetes for several years, or your HbA1c is high, plan for the upper end. If you were diagnosed recently and your BMI is lower, the lower end may be enough.

Why some people need much less

The Newcastle researchers behind DiRECT explain the variation with the idea of a personal fat threshold.

Each of us can store a certain amount of fat safely under the skin. That capacity is partly genetic. Once it is exceeded, fat begins to collect in places it shouldn't, especially the liver and the pancreas. That is when glucose control starts to break down.

The threshold differs a lot from person to person. People of South Asian, Black African, African-Caribbean and East Asian heritage tend to develop type 2 diabetes at lower BMIs. That is why NICE in the UK uses lower BMI cut-offs for these groups: 23 for overweight and 27.5 for obesity, instead of 25 and 30.

It also explains why some people with a BMI of 23 or 24 have type 2 diabetes. They have crossed their own threshold. When they lose weight, often 5% to 10% of their body weight, the extra fat in the liver and pancreas can fall below the level that causes trouble.

So if your BMI is already near normal, don't assume remission isn't possible for you. Your target is likely to be smaller than the headline number.

How fast should you lose it?

DiRECT used rapid weight loss over three to five months. This had real advantages. People saw results quickly, which kept them motivated, and liver fat fell fast.

But faster isn't the only way. Slower weight loss, for example 0.5 to 1 kg (1 to 2 lb) a week, can reach a similar total over six to nine months. For some people that is easier to sustain and easier to combine with normal family meals.

What matters most is reaching the total and keeping it. Pick a pace you can manage without feeling permanently deprived.

Protect your muscle while you lose

When you lose weight, some of it comes from lean tissue, including muscle. Muscle is where most glucose goes after a meal, so you want to keep as much of it as you can.

Two things help. First, eat enough protein. A portion of fish, eggs, chicken, tofu, beans, lentils, Greek yogurt or cottage cheese at every meal is a simple rule. Second, do some resistance exercise two or three times a week, such as squats, step-ups, wall push-ups, or exercises with resistance bands. I cover this in more detail in my article on the best exercise for remission.

Keeping it off: the second half of the job

The first months are about losing weight. Every month after that is about holding it. Most people find the second part harder, and very few plans prepare them for it.

After weight loss, hunger hormones change. Ghrelin, which drives hunger, rises. Leptin and gut hormones that help you feel full fall. Studies have shown these changes can last at least a year. Your body is quietly asking for the weight back.

That doesn't mean regain is inevitable. It means you need a plan for it. Practical steps that help:

Keep weighing yourself once a week after you reach your goal.
Set a regain limit, for example 2 kg (4 to 5 lb). If you reach it, return to stricter eating for two to four weeks.
Keep protein high and meals regular, which helps control hunger.
Stay active most days. Walking after meals is especially useful for glucose.
Check your HbA1c every three to six months in the first year after stopping medication, then at least yearly.
If your weight and glucose rise, contact your care team early. Restarting a medicine for a while isn't failure.

Where GLP-1 medicines fit

Medicines such as semaglutide and tirzepatide can produce weight loss of 15% or more in many people. They also lower glucose directly. For people who have struggled to lose weight by diet alone, they can be very helpful.

But while you take them, a normal HbA1c counts as good control, not remission, because they are glucose-lowering drugs. If you later stop them, weight often returns, as several trials have shown. Some people use them to help lose weight and then work hard on maintenance habits before stopping, with their doctor's support. Others stay on them long term. Both are reasonable choices to discuss with your doctor.

A safety note

If you take insulin, a sulfonylurea such as gliclazide, glipizide or glimepiride, or an SGLT2 inhibitor such as dapagliflozin or empagliflozin, ask your doctor how to adjust them before you cut calories or carbohydrates sharply. Low blood sugar and, with SGLT2 inhibitors, a rare condition called ketoacidosis are real risks on very low-calorie plans. Blood pressure tablets may also need reducing as your weight falls.

Putting it together: setting your own target

Write down your current weight and HbA1c.
Work out 10% and 15% of your weight using the table above.
If you were diagnosed within the past few years, or your BMI is under 27, start by aiming for 10%.
If you have had diabetes for longer, or your HbA1c is above about 8% (64 mmol/mol), aim for 15%.
Agree a plan with your doctor for medicines along the way.
Recheck HbA1c three months after reaching your goal and stopping medication.
Plan your maintenance phase before you finish losing weight.

How my book can help

The Type II Diabetes Remission Strategy lays out a 16-week plan that brings food changes in gradually, with strategic intermittent fasting, progressive exercise and habits such as sleep and stress control. It includes a diet plan and a tracker journal for your weight, HbA1c and readings, so you can see your progress and share it with your doctor. See the book page for what's inside.

Frequently asked questions

Can I go into remission by losing 5 kg? It is possible, especially soon after diagnosis or if your BMI is lower. In DiRECT, 7% of people losing up to 5 kg reached remission.

How much weight did people lose in DiRECT? The average loss in the intervention group was 10 kg at one year. A quarter lost 15 kg or more.

What if I'm already at a healthy BMI? You may still have excess fat in your liver and pancreas. A loss of 5% to 10% may be enough.

Do I need to reach a normal BMI? No. Many people in remission are still in the overweight range.

How quickly should I lose weight? DiRECT used 12 to 20 weeks of rapid loss. Slower loss also works if you reach a similar total and keep it off.

Will I lose remission if I regain weight? Not always, but regain is the main reason people lose remission. Act early if your weight starts to rise.

Does it matter where the weight comes from? Yes. Fat lost from the abdomen and liver matters most for glucose. A shrinking waist is a good sign that the right fat is going.

Should I count calories? You don't have to, but you need some way of eating less than before. Counting, portion control, meal replacement and fasting windows are all valid tools. Pick the one that suits you.

What if I hit a plateau? Plateaus are normal. Check portion sizes, liquid calories and alcohol, add more daily movement, and give it three or four weeks before changing your whole plan.