Examine finds dietary dangers in GLP-1 drug customers

Adults who’re chubby or overweight and taking the modern technology of weight reduction medicine, semaglutide and tirzepatide, are inclined to eat considerably much less, making them susceptible to dietary deficiencies, in line with one in every of the primary real-world research to look at the dietary habits of individuals taking glucagon-like peptide-1 receptor agonists and twin GLP-1/glucose-dependent insulinotropic polypeptide (GIP) twin agonist RAs (collectively known as GLP-1) employ RAs) with the assist of an AI-powered vitamin monitoring app.

The research, which can be offered at this yr’s European Congress on Weight problems (ECO) in Istanbul, Turkey (Could 12-15), is by Dr. Valentina Vinelli from the metabolic well being analysis staff led by Dr.

“Whereas GLP-1 RAs produce spectacular weight reduction, the query of whether or not significant muscle loss is accompanied by corpulent loss with these therapies continues to be hotly debated. Nevertheless, there stays basic settlement that defending muscle mass needs to be a central objective of any weight reduction program,” stated lead writer Dr. Vinelli.

“Muscle well being is determined by enough protein consumption and common bodily exercise, particularly resistance coaching. For folks utilizing GLP-1 RAs, decreased urge for food can fabricate it troublesome to satisfy protein wants, making what you eat extra well-known than ever, particularly on condition that protein wants are inclined to be increased in individuals with weight problems and through energetic weight reduction. Protein wants ought to at all times be customized, expressed in grams per kilogram of adjusted physique weight, and never considered as a one-size-fits-all objective can be.”

GLP1-RAs equivalent to Semaglutide (offered beneath the model names Ozempic/Wegovy) and tirzepatide (Mounjaro/Zepbound) mimic the hormones GLP-1 and GLP-1/GIP, respectively, which the physique already produces and that are launched in response to consuming, growing satiety and lowering meals cravings.

GLP-1 RAs possess been proven to scale back calorie consumption by 16-39%, making them an efficient device for treating weight problems. Nevertheless, slight analysis has examined their results on weight-reduction plan high quality or the consumption of well-known macro and micronutrients equivalent to protein, fiber, nutritional vitamins, iron and calcium, that are crucial to keep up edifying well being.

Insufficient micronutrient consumption can improve the danger of a spread of illnesses, from hair loss, fatigue and leisurely wound therapeutic to a weakened immune system and osteoporosis.

“Whereas GLP-1 RAs medicine are remodeling the remedy of weight problems, we nonetheless know very slight about how they have an effect on consuming habits and nutrient absorption,” defined Dr. Vinelli. “As well as, many individuals taking GLP-1 RAs obtain slight or no systematic steering on weight-reduction plan high quality, protein consumption, or micronutrient adequacy.”

Conventional dietary evaluation instruments equivalent to meals questionnaires and diaries are restricted by recall bias. Current advances in AI and digital well being provide promising options that permit cell app customers to report and analyze their consuming habits in actual time.

In response to those traits, researchers analyzed 5,741 days of knowledge from 332 consenting adults with chubby or weight problems between July 2025 and February 2026 utilizing a cell vitamin monitoring app.

They in contrast whole vitality consumption, macronutrient consumption, weight-adjusted protein adequacy, meal habits, and weight reduction between 116 GLP-1 RAs customers (who used both semaglutide or tirzepatide) and 216 nonusers (imply BMI 31.3 vs. 30.6 kg/m², 52.5 vs. 50.0 years, 72% vs. 63% feminine). Of the 116 GLP-1 RA customers within the research, 87 logged not less than one injection within the app. Of those, 62 used tirzepatide and 25 used semaglutide. The remaining 29 had been recognized as GLP-1 customers by means of their profile however didn’t log particular person injections. It is well-known to notice that dose information displays what customers chosen when logging into the app.

Of the 25 semaglutide customers who logged their injections, 10 (40%) recorded a most dose of 0.25 mg (preliminary dose), 4 (16%) 0.5 mg, 6 (24%) 1.0 mg, 2 (8%) 1.7 mg, and 3 (12%) 2.4 mg (upkeep dose). Of the 62 tirzepatide customers who logged their injections, 12 (19%) recorded a most dose of two.5 mg (the beginning dose), 21 (34%) recorded 5.0 mg, 10 (16%) recorded 7.5 mg, 17 (27%) recorded 10.0 mg, and a couple of (3%) recorded 12.5 mg.

The Robin Well being cell app consists of picture recognition (utilizing a photograph of a meal, the app analyzes the elements and calculates energy, carbohydrates, proteins and fat), barcode scanning, and textual content and voice logging, offering real-time macronutrient consumption estimates [1].

The evaluation discovered that contributors taking GLP-1 RAs medicines reported considerably decrease whole vitality consumption (common 1,102 vs. 1,281 kcal/day) as properly as considerably decrease intakes of macronutrients, together with protein (53.8 vs. 62.0 g/day), carbohydrates (128 vs. 143 g/day), and corpulent (39.7 vs. 45.7 g/day).

Regardless of the decrease absolute consumption, the macronutrient distribution (the proportion of day by day energy from macronutrients) was virtually similar (protein 20% vs. 19%, carbohydrates 47% vs. 46%, corpulent 33% vs. 34%), indicating a proportional discount in meals consumption relatively than adjustments in weight-reduction plan high quality.

Nevertheless, weight-adjusted day by day protein consumption in GLP-1 RAs customers was critically low (0.6 g/kg/day), with the bulk (88%) under the Italian nationwide advice for protein consumption (of 0.9 g/kg/day). Amongst non-users, protein consumption was additionally under this advice at 0.7 g/kg/day, being 69% under the nationwide advice. This reveals that insufficient protein consumption is a drawback no matter the burden loss technique used, however is extra of a drawback for these utilizing GLP-1 RAs. Based on the most recent Italian nationwide meals consumption survey (IV SCAI, 2017 to 2020, printed in 2025), the typical Italian grownup consumes 1.1 to 1.2 g/kg/day of protein, properly above the LARN advice of 0.9 g/kg/day. Solely about 7% of the full Italian inhabitants falls under this threshold.

Moreover, GLP-1 RAs customers had been far more doubtless to skip breakfast (31% vs. 16% of days), lunch (31% vs. 18%), and dinner (40% vs. 30%) than non-users, limiting alternatives for enough protein distribution all through the day.

As anticipated, within the subgroup of 177 contributors (76 GLP-1 RAs customers and 101 non-users) with longitudinal weight information, GLP-1 RAs customers skilled considerably better weight reduction than non-users (common −2.2 kg, −2.5% vs −0.2 kg, −0.2%), with practically a quarter (24%, 18 contributors) experiencing clinically significant weight reduction (not less than 5% physique weight reduction) in comparison with simply 3%. (3 contributors) from non-users.

The authors clarify that the average weight reduction noticed within the GLP-1 group displays the real-world circumstances of the research. The research didn’t independently evaluate or monitor remedy adherence; Medicine employ was self-reported by means of the app, and it’s attainable that some customers continued to select their remedy with out logging it. Most customers solely tracked their weight for just a few weeks (the median time between the primary and final weight measurement throughout the group was 22 days), and the vast majority of those that logged their injections appeared to nonetheless be within the dose titration part and never on the total upkeep dose. Nevertheless, among the many 13 customers who tracked their weight for not less than three months, the typical weight reduction was 7.3%, on course for weight reduction of greater than 10% after 12 months in randomized scientific trials.

The authors grunt: “Actual-world employ of GLP-1 RA in adults with chubby or weight problems is related to widespread protein deficiency and elevated meal skipping, highlighting the pressing want for proactive dietary monitoring and customized dietary counseling to be built-in into weight problems remedy to help long-term well being past weight reduction,” stated Dr. Vinelli.

“In our future work, we are going to disappear past protein to look at how GLP-1 RAs affect the absorption of different well-known vitamins and discover how real-time cell apps can assist folks keep wholesome consuming and way of life habits all through their journey.”

The authors acknowledge a number of limitations of the research, together with the small pattern dimension and its descriptive nature, which precludes causal conclusions and warrants affirmation in bigger research. Moreover, dietary information had been self-reported through app-based logging and will underestimate precise consumption, though AI-assisted multimodal seize doubtless reduces recall bias in comparison with conventional dietary evaluation strategies.