Obesity trials in Spain

In Spain 111 Also abroad 1939

111 trials · From ClinicalTrials.gov and EU CTIS (euclinicaltrials.eu), checked 11 November 2026. Ask the study team whether a trial fits you.

Phase 4Taking people
Effect of Semaglutide on Embryo Quality in Overweight and Obese Patients Undergoing In Vitro Fertilization.
Where
Barcelona, Reus, Sabadell, Sant Cugat del Vallès, Tarragona
Age
18 years to 38 years
People
62
Run by
Fundacion Dexeus
See details and how to joinNCT07242534 · EU 2025-522525-34-00
No phaseEnrolling by invitation
A Study to Evaluate Safety of Exposure to Wegovy During Pregnancy
Where
Madrid
Age
15 years to 50 years
People
728 worldwide
Run by
Novo Nordisk A/S
See details and how to joinNCT05872022
Phase 3Taking people
Levothyroxine as Adjuvant to a Hypocaloric Diet for the Treatment of Obesity.
Where
Cadiz, Córdoba, Jaén, Málaga, Valladolid
Age
25 years to 60 years
People
286
Run by
Fundación Pública Andaluza para la Investigación de Málaga en Biomedicina y Salud
See details and how to joinNCT07332273
No phaseTaking people
Efficacy of Semaglutide s.c. Once-weekly on Weight Loss and Management in Adolescents With Monogenic Obesity in Clinical Practice
Where
Madrid
Age
12 years to 21 years
People
70 worldwide
Run by
Prof. Dr. Martin Wabitsch
See details and how to joinNCT07302802
No phaseTaking people
EFFECTS OF SUPERVISED PHYSICAL EXERCISE AFTER BARIATRIC SURGERY ON MUSCLE MASS AND BONE DENSITY (OBEFIT STUDY)
Where
Seville
Age
18 years and over
People
54
Run by
Hospitales Universitarios Virgen del Rocío
See details and how to joinNCT07324447
No phaseTaking people
Clinical, Morphometric and Biochemical Effects on Adiposopathy Associated With the Use of GLP-1RA in CKD
Where
Valencia
Age
18 years to 90 years
People
250
Run by
Cardenal Herrera University
See details and how to joinNCT07309094
No phaseTaking people
Study on the Effect of a Gamified Health Education Programme on Primary School Children
Where
Badajoz
Age
6 years to 7 years
People
500
Run by
Universidad de Extremadura
See details and how to joinNCT07276412
Phase 2Taking people
Study of the Efficacy and Safety of Nicotinamide in Patients With Liver Fibrosis (NICOFIB)
Where
Barcelona
Age
18 years to 85 years
People
30
Run by
Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau
See details and how to joinNCT06599918
No phaseTaking people
Impact of Satiating Compounds and Hypocaloric Diet on Weight, Cardiometabolic and Osteoarticular Health in Obesity
Where
Pamplona
Age
18 years to 65 years
People
144
Run by
Clinica Universidad de Navarra, Universidad de Navarra
See details and how to joinNCT07165548
No phaseTaking people
Better4All Personalized Intervention Pilot Study
Where
Pamplona
Age
18 years to 65 years
People
490 worldwide
Run by
Harokopio University
See details and how to joinNCT07120802
No phaseTaking people
Weight Management in Obese Cancer Patients During Curative Active Treatment
Where
L'Hospitalet de Llobregat
Age
18 years and over
People
50
Run by
Institut d'Investigació Biomèdica de Bellvitge
See details and how to joinNCT07058207
No phaseNot yet taking people in Spain
Effect of CPAP Versus APAP in Patients With Obesity Undergoing Bariatric Surgery Protocol
Where
Madrid
Age
18 years to 80 years
People
104
Run by
Hospital Universitario Ramon y Cajal
See details and how to joinNCT07001215
No phaseNot yet taking people in Spain
Muscle Quality and Subcutaneous Adipose Tissue in the Rectus Femoris and Rectus Abdominis Muscles: Ultrasound Evaluation and Functional Correlation in Older Adults
Where
Salamanca
Age
65 years and over
People
150
Run by
University of Salamanca
See details and how to joinNCT07069777
No phaseNot yet taking people in Spain
Empowering Healthy Lifestyle Personalised Intervention to Prevent and Control Obesity: The HealthyW8 Project
Where
Castelldefels, Palma de Mallorca, Zaragoza
Age
7 years and over
People
2,720 worldwide
Run by
Fundació d'investigació Sanitària de les Illes Balears
See details and how to joinNCT07011368
No phaseTaking people
Bronchial Blockers vs Double-Lumen Tubes in Obese Patients
Where
Palma de Mallorca
Age
18 years to 90 years
People
46
Run by
Paulo Andrés Cano Jiménez
See details and how to joinNCT07031986
No phaseTaking people
Study of the Effects of Time-Restricted Feeding on the Immune Function of Individuals With Obesity
Where
Barcelona
Age
18 years to 64 years
People
45
Run by
Hospital Universitari Vall d'Hebron Research Institute
See details and how to joinNCT06858683
No phaseNot yet taking people in Spain
Better4All Personalized Intervention
Where
Pamplona
Age
18 years to 65 years
People
1,022 worldwide
Run by
Harokopio University
See details and how to joinNCT06997510
No phaseNot yet taking people in Spain
ENERGY2MOB STUDY: OBESITY MANAGEMENT IN BERGUEDÀ
Where
Manresa
Age
18 years to 65 years
People
136
Run by
Fundacio d'Investigacio en Atencio Primaria Jordi Gol i Gurina
See details and how to joinNCT06988904
Early phase 1Not yet taking people in Spain
Chronic Intervention With Sulforaphane-Smart® in Overweight and Obese Adults
Where
Murcia
Age
20 years to 45 years
People
40
Run by
Mª Jesús Periago
See details and how to joinNCT06964659
No phaseTaking people
Comparison of Two Surgical Techniques for Treatment of Type III Obesity (BMI 40-50 kg/m2): Single Anastomosis Duodenoileal Bypass With Sleeve Gastrectomy and Roux-en-Y Gastric Bypass.
Where
Barcelona
Age
18 years to 60 years
People
450
Run by
Hospital Clinic of Barcelona
See details and how to joinNCT06789965
No phaseEnrolling by invitation
Relationship Between Eating Patterns, Body Composition and the Detection of Fatty Liver in Children and Adolescents With Trisomy 21: LiverTy Project
Where
Madrid
Age
5 years to 22 years
People
34
Run by
IMDEA Food
See details and how to joinNCT06888570
No phaseTaking people
Modulation of the Inflammatory Response in Bariatric Surgery
Where
Barcelona
Age
18 years to 65 years
People
90
Run by
Hospital HM Nou Delfos
See details and how to joinNCT06915558
No phaseTaking people
Inhibitory Control Training for Excess Weight: Behavioural, Cognitive and Anthropometric Changes
Where
Granada
Age
18 years to 60 years
People
54
Run by
Raquel Vilar López
See details and how to joinNCT06600100
No phaseNot yet taking people in Spain
Obesity Prevention in Children and Young People Treated for Acute Lymphoblastic Leukaemia with ALLTogether
Where
Madrid
Age
5 years to 21 years
People
90 worldwide
Run by
University of Exeter
See details and how to joinNCT06846294
No phaseTaking people
Inhibitory Control Training and iTBS for Excess Weight: Behavioral and Brain Changes (InhibE).
Where
Granada
Age
18 years to 60 years
People
141
Run by
Raquel Vilar López
See details and how to joinNCT06668077