Unexplained weight loss happens when you lose significant weight without a change in diet or exercise, or without making other lifestyle changes

https://www.verywellhealth.com/rapid-weight-loss-5101064#citation-9

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Unexplained weight loss happens when you lose significant weight without a change in diet or exercise, or without making other lifestyle changes. ….. Unexplained weight loss can occur in people who have type 2 diabetes, but it’s more common in people with type 1. Type 1 diabetes usually affects children and adolescents. …. Weight loss in kids with diabetes can occur even in those who have a normal or increased appetite for the same reasons it happens in adults with diabetes. … Once kids are diagnosed and treated for diabetes, weight loss ceases and typically returns to normal. _{^{(https://www.verywellhealth.com/rapid-weight-loss-5101064#citation-9)}}

Diabetes Care 2022;45(Supplement_1):S17–S38
https://doi.org/10.2337/dc22-S002

Weight loss at the time of being diagnosed with Type 1 diabetes. In both cases of diabetes, people lose weight at the time of being diagnosed with diabetes. The difference is that people with Type 1 diabetes were mostly slim or average weight before diagnosis, but at the time of diagnosis, they experienced weight loss. The people affected with Type 2 diabetes were mainly overweight or obese before diagnosis with type 2 diabetes but at the time of diagnosis, experience weight loss.

There are quite a few explanations for sudden weight loss in people with diabetes. They all sound odd, like this one; “In people with diabetes, insufficient insulin prevents the body from getting glucose from the blood into the body’s cells to use as energy”. – Diabetes.co.uk ^{(A side note: The author has, on many pages on his old website, and particularly in his book “Mechanical Stimulation, Low-Grade Inflammation: Muscles Upward Lifting Activity, Weight Loss“, explained that body weight gain/loss (body mass gain/loss) is not about energy.) The Book explain the biomechanism of weight gain (biomechanism of body mass gain/loss) and the biomechanism of body mass distribution. It also explains that body weight is not about calories and energy.}

A side note: The diabetes researchers-scientists and researchers-scientists involved in weight gain/weight loss and obesity science share one similar thing. Diabetes researchers/scientists, for almost a hundred years, believed that in people with Type 1 diabetes, the pancreas doesn’t produce insulin at all. (For almost a hundred years( since the discovery of insulin until 2013), they didn’t know that the pancreas still produces insulin in patients with Type 1 diabetes.) For more than a hundred years (since the introduction of calories as a method for controlling body weight by Dr Lulu Hans Petters in 1920 till 2002), the researchers-scientists involved in the research, prevention and treatment of obesity have believed that every calorie in food intake, if not spent for basal metabolism or burnt through physical activities, will be converted to fat mas and stored in fat tissue-adipose tissue. Obesity researchers and other professionals involved in research, prevention and treatment of obesity for over a hundred years didn’t know that the human body excretes calories through metabolic waste like faeces, urine, sweat, breath, etc. Put it out in simple words, the diabetes researchers-scientists didn’t know that the pancreas in type 1 diabetics still produces some insulin. The obesity scientists-researchers didn’t know that faeces contain calories. (There is more information about the blunders made by obesity scientists-researchers on my old website.)

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Below are links to the authors’ research work on Type 1 Diabetes from 2004 through 2012.

1. Postural Profile of People with Type 1 Diabetes – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/postural-profile-of-people-with-type-1-diabetes
2. Musculoskeletal Profile of Normal Weight People without and with T1D – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/musculoskeletal-profile-of-normal-weight-people-withou
3. A Link Between Occupation and Type 1 Diabetes – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/a-link-between-occupation-and-type-1-diabetes
4. Weight Loss and Type 1 Diabetes – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/weight-loss-and-type-1-diabetes
5. Obesity and Type 1 Diabetes – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/obesity-and-type-1-diabetes
6. Insulin Therapy and Weight Gain – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/insulin-therapy-and-weight-gain
7. Spontaneous Remission of Type 1 Diabetes – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/spontaneous-remission-of-type-1-diabetes
8. Post-exercise Hypoglycemia – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/post-exercise-hypoglycemia
9. What Stimulates the Pancreas to Work Properly – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/what-stimulates-the-pancreas-to-work-properly
10. Type 1 Diabetes in American Indians, Alaska Natives – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/type-1-diabetes-in-american-indians-and-alaska-natives
11. Chiropractic Pioneering Research into Type 1 Diabetes – https://www.modernscienceofbiomechanics.com/biomechanology-of-type-1-diabetes/chiropractic-pioneering-research-into-type-1-diabetes