In Germany, approximately 34,567 children and adolescents under the age of 18 are currently living with type 1 diabetes — a chronic autoimmune disease that is usually diagnosed in childhood or adolescence (diabinfo.de). Around 3,600 new cases are diagnosed in this age group every year. Although type 1 diabetes is generally not associated with excess weight, current developments paint a different picture: According to studies, about 9% of boys and 14% of girls with type 1 diabetes in Germany are overweight. Among adults with type 1 diabetes, the proportion is as high as around 62% — bringing it close to the average in the general population (Overweight in Type 1 – How Can It Be Prevented? – Diabetes-Anker).
These developments raise important questions: Which factors influence weight development in people with type 1 diabetes? What role do insulin therapy, nutrition, exercise, or psychological aspects such as eating behavior and body image play? And how can we develop a better understanding of the actual challenges and needs of this patient group?
Methodology:
As part of a social listening analysis, digital discussions and posts were specifically evaluated in which people affected described their personal experiences with type 1 diabetes and weight regulation. The analysis included content from:
German-language diabetes and weight-loss forums (e.g. diabetes-forum.de, zuckerkrank.de, abnehmen.com), international subreddits such as r/diabetes_t1 and r/Typ1Diabetes, and
publicly accessible posts on TikTok and Instagram tagged with relevant hashtags such as #type1diabetes, #t1dweightloss, or #t1dlife. In addition,
YouTube videos and podcasts on losing weight with type 1 diabetes were also included.
The analysis was qualitative and exploratory. The aim was to identify recurring themes, concerns, tips, misunderstandings, and information gaps that often remain invisible in traditional scientific studies or medical guidelines. ChatGPT was also used as an additional aid. The results and sources provided by ChatGPT were manually reviewed. The findings were positively surprising.
Two key challenges in weight regulation with type 1 diabetes
The analysis of posts and discussions from forums, social networks, and subreddits clearly shows that weight is not just a secondary issue for many people with type 1 diabetes, but closely tied to their daily lives and well-being. Two problem areas in particular appear repeatedly across many posts and personal accounts:
Weight gain after initial diagnosis: an explainable but often unsettling phenomenon
Many people with type 1 diabetes experience a noticeable change in weight around the time of diagnosis — usually in two phases. First, there is often unintentional weight loss in the period leading up to the diagnosis. This phase often begins gradually as the pancreas produces less and less insulin. Insulin has an anabolic effect, meaning that it promotes the build-up of fat tissue. Before diagnosis, the body is usually in a catabolic state — despite high calorie intake, many affected individuals lose weight because of insulin deficiency. Since the body lacks the insulin needed to move glucose from food into the cells, the carbohydrates consumed cannot be properly utilized — some of the calories are effectively “lost,” and the body draws on fat and muscle reserves to meet its energy needs.
Once insulin therapy begins, many people then report rapid and sometimes dramatic weight gain — even though they have not changed their diet at all, or only very little. While this is initially shocking for many, it can be medically explained quite well: insulin now once again ensures that glucose from food reaches the body’s cells. The body begins to fully utilize the calories consumed again — and in doing so, returns roughly to the weight that corresponds to the person’s actual energy intake.
The main issue here, however, is the apparent lack of education about these physiological mechanisms. Many affected individuals turn to online forums and other people with diabetes to understand what is happening. This uncertainty could be avoided through better communication and awareness on the part of medical professionals. Since that is not always the case, many patients describe this process as “unfair” or “illogical,” especially if they were previously slim despite eating plenty. They wonder whether they are doing something wrong and feel left alone with their situation. Hoping that others are going through the same thing and may have found a solution, many turn to online forums and subreddits. It is only when this mechanism is explained — and understood as something caused not by a lack of willpower, but by a restored metabolism — that the situation begins to make sense. Knowing this can help people stop perceiving their body as an “enemy” and instead see it as an organism adjusting to a new normal.
This initial weight gain is therefore not a sign of unhealthy behavior — the real issue usually lies not in the actions of those affected, but in the lack of adequate education about the underlying physiological processes.
Losing weight with type 1 diabetes — a balancing act between control and risk
While many people without diabetes “only” need to pay attention to calories when trying to lose weight, people with type 1 diabetes face an additional challenge: they must constantly keep an eye on their blood sugar and adjust their insulin intake. Numerous posts describe how this makes weight loss much more complex — particularly because calorie deficits, exercise, and changes in eating habits can increase the risk of hypoglycemia (low blood sugar).
Typical statements from the forums include:
“I’d like to eat less, but then I end up going low too often.”
“After exercising, I have to eat even though I actually want to lose weight.”
In addition, there is often tension between the desire to lose weight and the fear of losing control: reducing insulin doses too much can lead to dangerous blood sugar spikes; taking too much insulin means having to counteract it — usually with additional carbohydrates. This cycle often leads to frustration, uncertainty, and the feeling of making no progress.
What does the community say? Strategies and experiences in dealing with weight and type 1 diabetes
Despite the difficulties described, the social listening results also show that many people with type 1 diabetes develop their own strategies to deal with weight gain and barriers to weight loss — often based on personal experience, exchange with others affected, and a great deal of trial and error.
Across German and international forums, as well as on platforms like Reddit, recurring themes and tips emerge that are intended to help people find a healthy balance between blood sugar control and weight management. Three central strategic areas stand out:
Adjusting insulin doses during a calorie deficit — with caution and experience
One frequently discussed aspect is the deliberate adjustment of insulin doses when calorie intake is reduced. Many affected individuals report slightly reducing their bolus and basal insulin doses when eating less or exercising — although almost all emphasize how individual this process is. An additional measure more frequently mentioned on social media is factoring in a “buffer” for hypoglycemia within calorie planning. This means that a low blood sugar episode does not automatically cause the daily calorie target to be missed.
Using timing and type of exercise strategically
Exercise is often mentioned as a key factor — but not without complications. Many people specifically rely on strength training to build muscle mass and increase basal metabolic rate without disrupting blood sugar too severely. Others swear by walks after meals or interval training in the morning to improve insulin sensitivity. Various social media posts and forum discussions show highly differentiated daily routines in which insulin delivery, exercise, and nutrition are precisely coordinated. It is important to emphasize that for people with type 1 diabetes, this requires careful planning, and individuals often have to incorporate their activity into meal and insulin planning hours in advance in order to avoid hypoglycemia.
Low-carb approaches — not for everyone, but helpful for many
Many of the analyzed posts show that people are increasingly engaging with low-carb nutrition. The goal is usually not just weight loss, but above all a more stable blood sugar curve. Opinions differ, however, regarding long-term feasibility — some find low-carb liberating, others find it stressful or socially limiting, and still others even consider strict low-carb diets dangerous. Various discussions, for example on diabetes-forum.de, show just how controversial this method is among both patients and experts.
An example of a positive community approach: “Zuckerjunkies – A Life with Type 1 Diabetes”
The podcast “Zuckerjunkies – A Life with Type 1 Diabetes” is hosted by Sascha Schworm, a person with type 1 diabetes who was diagnosed in 2005 after a severe case of bronchitis. He is a positive example from the community, showing how important exchange among people affected can be. After other patients pointed out to Sascha Schworm what is possible with type 1 diabetes, he decided to shape his life actively. He completed triathlons and Ironman half-distance races and made it his goal to encourage other people with diabetes and show that diabetes is not an obstacle to a fulfilling life. He supports people with type 1 diabetes in weight regulation — not through concrete diet plans, but primarily through education, motivation, and personal experience reports that help people develop a better understanding of their own body and the effects of insulin, nutrition, and exercise.
Conclusion: weight regulation with type 1 diabetes needs more space — and more understanding
The social listening findings clearly show that weight is a sensitive and often underestimated issue for many people with type 1 diabetes. Weight gain after diagnosis is often experienced as a loss of control, and losing weight can be more difficult than for metabolically healthy individuals due to the complex interaction of insulin, blood sugar, and nutrition. At the same time, many affected individuals show a high degree of initiative on social media and in various forums, exchange experiences, and develop individual strategies. However, this should also be viewed in light of the fact that a certain level of intrinsic motivation is already needed in order to seek information online about the disease and problems with weight regulation.
At the same time, it is also clear that many of the challenges involved in losing weight — such as frustration over lack of progress, emotional eating patterns, or the search for a suitable nutritional approach — overlap with those of healthy individuals. But for people with type 1 diabetes, classic strategies such as calorie deficits, exercise, or low-carb often have different consequences. What might “only” increase energy expenditure in healthy people can directly trigger hypoglycemia in people with diabetes — or require additional insulin adjustments. This constant need for regulation may initially seem like an obstacle, but it also presents a unique opportunity: anyone who already monitors their blood sugar and their body’s reactions every day essentially holds a valuable tool for recognizing patterns and responding in a targeted way.
With the right approach, this intensive self-observation can even lead to a deeper understanding of the body. Some people affected (e.g. Sascha Schworm) report that regularly dealing with blood sugar levels, insulin, and meals helps them develop a more refined sense of the effects of specific foods, physical activity, and emotional states — a skill many people without diabetes do not have. When properly supported, this knowledge can not only improve quality of life, but also provide more sustainable support in achieving health goals such as weight regulation.
Anyone who listens — whether as a healthcare professional or as a fellow affected person — can therefore help not only to make these challenges more realistic and individualized, but also to make the potential visible. Weight regulation in type 1 diabetes is not a marginal issue, but an integral part of the lived reality of many people affected — and it deserves corresponding attention, empathy, and appropriate support.
Author: Benedikt Schulz
Benedikt was an intern at Q this year and conducted an independent study during his internship, on which he based this blog post. Thank you, Benny!