Jens Lund
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lundjens.bsky.social
Jens Lund
@lundjens.bsky.social
Postdoc at University of Copenhagen trying to understand why some develop obesity while others are resistant to weight gain ⚖️
⚖️ I will also provide critical perspectives on some of the other ‘hyped’ metabolites that are claimed to have “anti-obesity” effects . . .

@cbmr.science
September 17, 2025 at 1:07 PM
😱 I will present two ‘horror stories’, one on lactate and one on pyruvate (unpublished), illustrating major overlooked methodological problems in e.g. metabolic toletance tests used to assess glucose homeostasis. 3/4

@clemmensenc.bsky.social @zgerharthines.bsky.social
September 17, 2025 at 1:07 PM
Then you should join the @easdnews.bsky.social Rising Star Symposium tomorrow (thursday) at 🕗 08.30-10.10 in📍London Hall (or online). 2/4
September 17, 2025 at 1:07 PM
👉 Legacy effect
👉 Novel subtype of T2D
👉 MASLD screening in newly diagnosed T2D
👉T2D and cardiorenal comorbidities
👉 Stressors and MetS
👉 Psychosocial inequality and foot compl. in newly diagnosed T2D
👉 Sex diff. in vascular compl.
👉 How MetS contributes to global disease burden
September 16, 2025 at 6:31 AM
Then join the epidemiology-focused short oral discussion session (Event A) today (Tuesday) from 12.00 – 13.00 at Station 03 in Hall C. It will include presentations on 👇 2/3
September 16, 2025 at 6:31 AM
Take-home 📨: Thin people are battling their own biology. The forces they try to overcome to gain weight are similar, if not the same, to those that people with high BMIs fight when trying to lose weight 👉 illustrating that biology largely determines our body weight!

www.nature.com/articles/s41...
Tracing the biological roots of obesity resistance in humans - Nature Reviews Endocrinology
Nature Reviews Endocrinology - Tracing the biological roots of obesity resistance in humans
www.nature.com
September 13, 2025 at 9:55 AM
But there are also people that seem to eat more than they burn. The observation that certain individuals with constitutional thinness remain weight stable while seemingly eating more calories than they expend might be explained by increased loss of calories in the toilet 💩 6/8
September 13, 2025 at 9:55 AM
But what might explain weight gain resistance in people with constitutional thinness? For some thin people,
enhanced satiety might play a role 🍔 For others, increased energy expenditure could be an answer 🔥 as suggested by
@johnspeakman4.bsky.social's group 5/8

www.cell.com/cell-metabol...
Higher than predicted resting energy expenditure and lower physical activity in healthy underweight Chinese adults
Contrary to popular opinion that lean individuals “eat what they want” and exercise more, Hu et al. study a cohort of healthy underweight volunteers and reveal them to have reduced physical activity r...
www.cell.com
September 13, 2025 at 9:55 AM
The numerous anecdotes and stories appearing in this network illustrate that:

1) Weight stigma hits both ends of the BMI spectrum!

2) People with thinness might also help us improve the treatment of other cardiometabolic diseases! 4/8

royalsocietypublishing.org/doi/10.1098/...
Physiological protection against weight gain: evidence from overfeeding studies and future directions | Philosophical Transactions of the Royal Society B: Biological Sciences
Body weight is under physiological regulation. When body fat mass decreases, a series of responses are triggered to promote weight regain by increasing food intake and decreasing energy expenditure. Analogous, in response to experimental overfeeding, ...
royalsocietypublishing.org
September 13, 2025 at 9:55 AM
In 2020, I started building a network for people living with constitutional thinness. This group now has more than 600 members that report to live with a persistent and healthy form of thinness. 3/8
September 13, 2025 at 9:55 AM
Building on work by Mélina Bailly et al., and myself and @clemmensenc.bsky.social, the article illustrates how constitutional thinness might hold the keys for better understanding obesity and finally unlocking its ‘The Gordian Knot’, i.e. preventing overweight. 2/8
annualreviews.org/content/jour...
Unique Energy Profile Associated with Persistent Thin Phenotype | Annual Reviews
The concept of constitutional thinness first emerged in the scientific literature at the beginning of the 20th century. Yet, this concept of a physiologically determined thinness, which clearly differ...
annualreviews.org
September 13, 2025 at 9:55 AM
In the Journal Club, we highlight potential uses, together with key limitations, of a novel mouse model for studying lactate biology. It is freely available. Take a look if you're into e.g. metabolite or exercise biology👇
physoc.onlinelibrary.wiley.com/doi/10.1113/...
Cutting through dogma: a novel tool to dissect lactate biology
Click on the article title to read more.
physoc.onlinelibrary.wiley.com
August 8, 2025 at 12:15 PM
We wrote one of these last year and I'm really happy to see the above recognition of our work which was led by @niclasrausch.bsky.social when he was visiting the @zgerharthines.bsky.social Lab at the @cbmr.science. 2/3
August 8, 2025 at 12:15 PM