Sendagaia
Semaglutide: epaiketek zer diote
Semaglutide 2.4 mg astean, 68 astetan, %15eko batez besteko pisu-galera eragin zuen. Zenbaki hori benetakoa da, errepikatua, eta askotan oker irakurtzen da.
Titulu probak
STEP 1ek obesitate edo gehiegizko pisua duten eta diabetesik gabeko helduak semaglutide 2.4 mg astean edo plazebo, biak bizimoduaren esku-hartzearekin, 68 astetan aleatorizatu zituen [9]. Pisu aldaketa batez bestekoa sendagaiaren kasuan ≈ −14.9% izan zen, plazeboaren kasuan ≈ −2.4% izan zen. Parte-hartzaileen hiru laurdenek sendagaia hartu zuten eta %20 edo gehiago galdu zuten — aurretik bariatriko kirurgiaren esparrua izan zen emaitza bat.
Bi gauza garrantzitsuak dira. Lehenik, hori batez bestekoa da: banaketa zabala da, eta gutxi galdu duten gutxi batzuek gutxi galdu dute. Bigarrenik, plazebo taldeak ere bizimoduaren aholkularitza jaso zuen, beraz %2.4 ez da "ezer ez egitea" — sendagaiaren efektua aholkularitzaren gainean neurtzen da, berak berez zerbait egiten du.
Zenbakia txikiagoa da diabetes baduzu
STEP 2k diseinu bera erabili zuen diabetes mota 2 duten helduetan eta %9.6ko pisu-galera aurkitu zuen dosi berarekin [8]. %15 eta %10 arteko aldea etengabe agertzen da klasean eta ez da semaglutide-ri espezifikoa. GLP-1 agonisten arteko analisi konparatiboak pisu eta glizemiaren helburuen gaineko antzeko patroiak erakusten ditu [3].
| Epaiketa | Populazioa | Iraupena | Pisu aldaketa batez bestekoa | Plazebo |
|---|---|---|---|---|
| STEP 1 [9] | Obesitatea, diabetesik gabe | 68 aste | ≈ −14.9% | ≈ −2.4% |
| STEP 2 [8] | Obesitatea + 2. motako diabetes | 68 aste | ≈ −9.6% | ≈ −3.4% |
| STEP 4 [7] | Jarraitu vs erretiratu 20 astetan ondoren | 48 aste gehiago | Jarraitu: galera gehiago | Erretiratu: berreskuratu |
| SELECT [5] | Obesitatea + gaixotasun kardiobaskularra | ~4 urte | Iraunkorra ≈ −10% | ≈ −1.5% |
Zenbat denbora mantentzen da?
68 asteko probek iradoki zuten baino gehiago. Datu luzeen analisi batek efektua urte batetik aurrera mantentzen dela aurkitu zuen [1], eta SELECT kardiobaskular probak — pisu probatzat ez zen diseinatua eta lau urte inguru iraun zuen — pisu galera ≈ %10 inguruan plato egiten eta mantentzen ikusi zuen, ez erortzen [5]. Platoa benetakoa da; kritikariek aurreikusi zuten atzera egitea ez da, tratamendua jarraitzen bada.
Jarraitu pisu galera tratamendu jarraituarekin
Semaglutide tirzepatide aurka
Diabetes mota 2rako, SURPASS-2k tirzepatide semaglutide 1 mg-ren aurka konparatu zuen eta tirzepatidek irabazi zuen. Obesitateari dagokionez, dosi obesitatean egindako konparaketa zuzena beranduago etorri zen eta erabakigarria izan zen: tirzepatidek semaglutide baino batez besteko pisu galera handiagoa eragin zuen [10], aurreko mundu errealean eta zeharkako konparazioetan koherentea [11].
Hori ez du automatikoki tirzepatide pertsona baten aukerarik onena egiten — tolerantzia, kostua, hornidura eta konorbiditateak guztiak eragina dute — baina pisu galera bakarrik kontuan hartuta, ordena ez da eztabaidagarria. Ikusi tirzepatide.
Non du semaglutide gidalerro bat atzean
Pisutik haratago, semaglutide metabolismo-funtzioarekin lotutako steatosi gibeleko gaixotasunaren gidalerro formaletara iritsi da, non Europako gidalerroek bere rola jorratzen duten [2]. Gainera, klaseko agente bakarra da diabetesik gabeko obesitate populazioan amaitutako kardiobaskular probarekin [5], kardiobaskular orrian jorratzen dena.
Ohiko galderak
Wegovy Ozempic baino desberdina al da?
Zergatik galdu dut %15 baino gutxiago?
Hilabete batzuetan ez al du lan egiten?
Kilogramo batzuk galdu eta gero gelditu al naiteke?
Erreferentziak
Hemen azpiko aipamen guztiak PubMed-en edo DOI bidezko jatorrizko peer-reviewed erregistroari lotzen diote. Hemen ez dago mediku aholkurik ordezkatzeko.
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Effect of glucagon-like peptide-1 receptor agonists and co-agonists on body composition: Systematic review and network meta-analysis Karakasis P, Patoulias D, Fragakis N, et al. · Metabolism: clinical and experimental · 2025 · Meta-analysis DOIPubMed 39719170
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Subcutaneously administered tirzepatide vs semaglutide for adults with type 2 diabetes: a systematic review and network meta-analysis of randomised controlled trials Karagiannis T, Malandris K, Avgerinos I, et al. · Diabetologia · 2024 · Meta-analysis DOIPubMed 38613667Full text
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Long-Term Efficacy and Safety of Once-Weekly Semaglutide for Weight Loss in Patients Without Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials Moiz A, Levett JY, Filion KB, et al. · The American journal of cardiology · 2024 · Meta-analysis DOIPubMed 38679221
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EASL-EASD-EASO Clinical Practice Guidelines on the management of metabolic dysfunction-associated steatotic liver disease (MASLD) Journal of hepatology · 2024 · Clinical guideline DOIPubMed 38851997
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A systematic review of the effect of semaglutide on lean mass: insights from clinical trials Bikou A, Dermiki-Gkana F, Penteris M, et al. · Expert opinion on pharmacotherapy · 2024 · Systematic review DOIPubMed 38629387
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Comparative effectiveness of GLP-1 receptor agonists on glycaemic control, body weight, and lipid profile for type 2 diabetes: systematic review and network meta-analysis Yao H, Zhang A, Li D, et al. · BMJ (Clinical research ed.) · 2024 · Meta-analysis DOIPubMed 38286487Full text
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Assessment of Thyroid Carcinogenic Risk and Safety Profile of GLP1-RA Semaglutide (Ozempic) Therapy for Diabetes Mellitus and Obesity: A Systematic Literature Review Feier CVI, Vonica RC, Faur AM, et al. · International journal of molecular sciences · 2024 · Systematic review DOIPubMed 38673931Full text
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Once-weekly semaglutide for obesity or overweight: A systematic review and meta-analysis He K, Guo Q, Zhang H, et al. · Diabetes, obesity & metabolism · 2022 · Meta-analysis DOIPubMed 34866313
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Efficacy and Safety of Semaglutide for Weight Loss in Obesity Without Diabetes: A Systematic Review and Meta-Analysis Tan HC, Dampil OA, Marquez MM · Journal of the ASEAN Federation of Endocrine Societies · 2022 · Meta-analysis DOIPubMed 36578889Full text
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Once-weekly semaglutide 7·2 mg in adults with obesity (STEP UP): a randomised, controlled, phase 3b trial Wharton S, Freitas P, Hjelmesæth J, et al. · The lancet. Diabetes & endocrinology · 2025 · Randomised controlled trial DOIPubMed 40961952
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Oral Semaglutide at a Dose of 25 mg in Adults with Overweight or Obesity Wharton S, Lingvay I, Bogdanski P, et al. · The New England journal of medicine · 2025 · Randomised controlled trial DOIPubMed 40934115
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Coadministered Cagrilintide and Semaglutide in Adults with Overweight or Obesity Garvey WT, Blüher M, Osorto Contreras CK, et al. · The New England journal of medicine · 2025 · Randomised controlled trial DOIPubMed 40544433
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Cagrilintide-Semaglutide in Adults with Overweight or Obesity and Type 2 Diabetes Davies MJ, Bajaj HS, Broholm C, et al. · The New England journal of medicine · 2025 · Randomised controlled trial DOIPubMed 40544432
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evoke and evoke+: design of two large-scale, double-blind, placebo-controlled, phase 3 studies evaluating efficacy, safety, and tolerability of semaglutide in early-stage symptomatic Alzheimer's disease Cummings JL, Atri A, Feldman HH, et al. · Alzheimer's research & therapy · 2025 · Randomised controlled trial DOIPubMed 39780249Full text
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Semaglutide versus placebo in people with obesity-related heart failure with preserved ejection fraction: a pooled analysis of the STEP-HFpEF and STEP-HFpEF DM randomised trials Butler J, Shah SJ, Petrie MC, et al. · Lancet (London, England) · 2024 · Randomised controlled trial DOIPubMed 38599221Full text
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Semaglutide and cardiovascular outcomes in patients with obesity and prevalent heart failure: a prespecified analysis of the SELECT trial Deanfield J, Verma S, Scirica BM, et al. · Lancet (London, England) · 2024 · Randomised controlled trial DOIPubMed 39181597
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Long-term weight loss effects of semaglutide in obesity without diabetes in the SELECT trial Ryan DH, Lingvay I, Deanfield J, et al. · Nature medicine · 2024 · Randomised controlled trial DOIPubMed 38740993Full text
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Long-term kidney outcomes of semaglutide in obesity and cardiovascular disease in the SELECT trial Colhoun HM, Lingvay I, Brown PM, et al. · Nature medicine · 2024 · Randomised controlled trial DOIPubMed 38796653Full text
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Once-Weekly Semaglutide in Persons with Obesity and Knee Osteoarthritis Bliddal H, Bays H, Czernichow S, et al. · The New England journal of medicine · 2024 · Randomised controlled trial DOIPubMed 39476339
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Semaglutide and Cardiovascular Outcomes in Obesity without Diabetes Lincoff AM, Brown-Frandsen K, Colhoun HM, et al. · The New England journal of medicine · 2023 · Randomised controlled trial DOIPubMed 37952131
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Semaglutide once a week in adults with overweight or obesity, with or without type 2 diabetes in an east Asian population (STEP 6): a randomised, double-blind, double-dummy, placebo-controlled, phase 3a trial Kadowaki T, Isendahl J, Khalid U, et al. · The lancet. Diabetes & endocrinology · 2022 · Randomised controlled trial DOIPubMed 35131037
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Two-year effects of semaglutide in adults with overweight or obesity: the STEP 5 trial Garvey WT, Batterham RL, Bhatta M, et al. · Nature medicine · 2022 · Randomised controlled trial DOIPubMed 36216945Full text
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Weight regain and cardiometabolic effects after withdrawal of semaglutide: The STEP 1 trial extension Wilding JPH, Batterham RL, Davies M, et al. · Diabetes, obesity & metabolism · 2022 · Randomised controlled trial DOIPubMed 35441470Full text
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Effect of Subcutaneous Semaglutide vs Placebo as an Adjunct to Intensive Behavioral Therapy on Body Weight in Adults With Overweight or Obesity: The STEP 3 Randomized Clinical Trial Wadden TA, Bailey TS, Billings LK, et al. · JAMA · 2021 · Randomised controlled trial DOIPubMed 33625476Full text
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Effect of Continued Weekly Subcutaneous Semaglutide vs Placebo on Weight Loss Maintenance in Adults With Overweight or Obesity: The STEP 4 Randomized Clinical Trial Rubino D, Abrahamsson N, Davies M, et al. · JAMA · 2021 · Randomised controlled trial DOIPubMed 33755728Full text
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Semaglutide 2·4 mg once a week in adults with overweight or obesity, and type 2 diabetes (STEP 2): a randomised, double-blind, double-dummy, placebo-controlled, phase 3 trial Davies M, Færch L, Jeppesen OK, et al. · Lancet (London, England) · 2021 · Randomised controlled trial DOIPubMed 33667417
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Once-Weekly Semaglutide in Adults with Overweight or Obesity Wilding JPH, Batterham RL, Calanna S, et al. · The New England journal of medicine · 2021 · Randomised controlled trial DOIPubMed 33567185
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The effect of semaglutide 2.4 mg once weekly on energy intake, appetite, control of eating, and gastric emptying in adults with obesity Friedrichsen M, Breitschaft A, Tadayon S, et al. · Diabetes, obesity & metabolism · 2021 · Randomised controlled trial DOIPubMed 33269530Full text
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Semaglutide versus dulaglutide once weekly in patients with type 2 diabetes (SUSTAIN 7): a randomised, open-label, phase 3b trial Pratley RE, Aroda VR, Lingvay I, et al. · The lancet. Diabetes & endocrinology · 2018 · Randomised controlled trial DOIPubMed 29397376
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Effects of once-weekly semaglutide on appetite, energy intake, control of eating, food preference and body weight in subjects with obesity Blundell J, Finlayson G, Axelsen M, et al. · Diabetes, obesity & metabolism · 2017 · Randomised controlled trial DOIPubMed 28266779Full text
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Tirzepatide as Compared with Semaglutide for the Treatment of Obesity Aronne LJ, Horn DB, le Roux CW, et al. · The New England journal of medicine · 2025 · Clinical trial DOIPubMed 40353578
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Semaglutide vs Tirzepatide for Weight Loss in Adults With Overweight or Obesity Rodriguez PJ, Goodwin Cartwright BM, Gratzl S, et al. · JAMA internal medicine · 2024 · Journal article DOIPubMed 38976257Full text