You’ve Heard of Fatty Liver. Nobody Mentions Fatty Pancreas: The Organ Fat Behind Type 2 Diabetes Remission

Key Takeaways:

• In a meta-analysis of 12 studies and 6,369 people, about 54 percent of people with type 2 diabetes had fatty pancreas, meaning excess fat stored in and around the pancreas, the organ that makes insulin.
• In the DiRECT trial, 46 percent of people who went through a structured weight-loss program within six years of their diabetes diagnosis were in remission at one year, with normal blood sugar off all diabetes medicines, compared with 4 percent who got usual care; 86 percent of those who lost 15 kilograms or more were in remission.
• In a detailed DiRECT sub-study, pancreas fat fell with weight loss whether or not blood sugar returned to normal; what separated the people who went into remission was whether their own insulin response came back, and they had had diabetes for a shorter time.

Most people with type 2 diabetes have heard the words “fatty liver” by now. Almost nobody is told about fatty pancreas, and I think it’s one of the most hopeful things you can learn after a diabetes diagnosis. Here’s the common belief: type 2 diabetes only goes one direction. You start with one pill, then two, then maybe insulin, because the cells that make insulin are slowly wearing out and there’s nothing you can do about it. For a lot of people, that isn’t the whole story. Fat doesn’t only collect under the skin or around the waist. When the body has been taking in more energy than it uses for years, fat also gets stored inside organs that were never meant to hold much of it, first the liver and then the pancreas. A recent pooled analysis of 12 studies found fatty pancreas in about half of people with type 2 diabetes. Roy Taylor’s group in Newcastle has argued for years that this matters directly: when the insulin-making beta cells sit in a fatty environment, they release less insulin when blood sugar rises. Early on, that slowdown is reversible. Over time, it can become permanent. That’s what turns this from a curiosity into a deadline.

The most convincing evidence comes from what happens when the fat comes off. In a first small study, 11 people with type 2 diabetes followed a very-low-calorie diet of about 600 calories a day for eight weeks under close supervision. Their fasting blood sugar was normal within a week. Over the eight weeks, liver fat fell sharply, pancreas fat fell from about 8 percent to about 6 percent, and the fast first burst of insulin after a sugar load, the response that is usually lost early in diabetes, climbed back close to normal. The DiRECT trial then tested the idea in ordinary primary care. It enrolled 306 adults who had been diagnosed within the previous six years and weren’t on insulin. The program used a formula diet of roughly 825 to 853 calories a day for three to five months, with diabetes and blood pressure medicines stopped under medical supervision, followed by a gradual return to food and long-term support. At one year, 46 percent of the program group were in remission, compared with 4 percent of the usual-care group. Remission tracked with weight loss: 7 percent of those who lost up to 5 kilograms, 34 percent of those who lost 5 to 10, and 86 percent of those who lost 15 or more. At two years, 36 percent were still in remission, and 64 percent of people who kept off at least 10 kilograms were.

Can losing a fatty pancreas put type 2 diabetes into remission?

For many people early in the disease, losing the weight can, and that’s why I don’t tell newly diagnosed patients that diabetes is a life sentence. For many, it’s a weight-sensitive window. The detail I find most important came from looking closely at the people in DiRECT. Pancreas fat fell in the people who lost weight whether or not their blood sugar normalized. What separated the people who went into remission was whether their own insulin response came back, and they had had diabetes for a shorter time on average, about 2.7 years compared with 3.8 years. Whether the pancreas fat itself is the culprit is still debated; genetic studies point more firmly at liver fat. Either way, the fat can come out at any stage, but the capacity to recover seems to fade the longer high blood sugar has been in charge. So if you were diagnosed recently, ask about remission directly, not just about the next medicine. Don’t stop any diabetes or blood pressure medicine on your own. A very-low-calorie plan has to be supervised, because doses often need to come down quickly. The goal is weight loss you can keep, since remission held best in the people who kept the weight off. Remission also isn’t a cure. Blood sugar can drift back up, so your A1c still needs checking. The earlier you act, the more of your own insulin you may be able to get back.

References:

1. Ahmad, S., Sul, H. H., Danpanichkul, P., & Souza, M. (2026). High prevalence of fatty pancreas disease in type 2 diabetes mellitus: A meta-analysis. Diabetes Research and Clinical Practice, 236, 113149.
2. Taylor, R. (2008). Pathogenesis of type 2 diabetes: Tracing the reverse route from cure to cause. Diabetologia, 51(10), 1781-1789.
3. Lim, E. L., Hollingsworth, K. G., Aribisala, B. S., Chen, M. J., Mathers, J. C., & Taylor, R. (2011). Reversal of type 2 diabetes: Normalisation of beta cell function in association with decreased pancreas and liver triacylglycerol. Diabetologia, 54(10), 2506-2514.
4. Lean, M. E., Leslie, W. S., Barnes, A. C., Brosnahan, N., Thom, G., McCombie, L., et al. (2018). Primary care-led weight management for remission of type 2 diabetes (DiRECT): An open-label, cluster-randomised trial. The Lancet, 391(10120), 541-551.
5. Lean, M. E. J., Leslie, W. S., Barnes, A. C., Brosnahan, N., Thom, G., McCombie, L., et al. (2019). Durability of a primary care-led weight-management intervention for remission of type 2 diabetes: 2-year results of the DiRECT open-label, cluster-randomised trial. The Lancet Diabetes & Endocrinology, 7(5), 344-355.
6. Taylor, R., Al-Mrabeh, A., Zhyzhneuskaya, S., Peters, C., Barnes, A. C., Aribisala, B. S., et al. (2018). Remission of human type 2 diabetes requires decrease in liver and pancreas fat content but is dependent upon capacity for β cell recovery. Cell Metabolism, 28(4), 547-556.e3.