| ACT | Asthma Control Test |
| ADDQoL-19 | Audit of Diabetes-Dependent Quality of Life |
| AHT | Anti-Hypertension Medication |
| AQLQ | Asthma Quality of Life Questionnaire |
| BMI | Body Mass Index |
| CAD | Coronary artery disease |
| CDQOL | Celiac Disease-Specific Quality of Life |
| CDPQOL | Celiac Disease Pediatric-Specific Quality of Life |
| CKD | Chronic kidney disease |
| CUCQ-8 | Crohn’s and Ulcerative Colitis Questionnaire |
| CVD | Cardiovascular disease |
| DEP | Dynamic exercise program |
| DLQI | Dermatology Life Quality Index |
| DTSQ-s | Diabetes Treatment Satisfaction Questionnaire-status version |
| EDSS | Expanded Disability Status Scale |
| EQ-5D-3L | European Quality of Life 5 Dimensions 3 Level |
| FFQ | Food Frequency Questionnaire |
| GESTAFIT | Gestation and Fitness Project |
| HRQoL | Health-related quality of life |
| IBD | Inflammatory bowel disease |
| IBDQ | Inflammatory Bowel Disease Questionnaire |
| IMI | Italian Mediterranean Diet Index |
| IPAQ | International Physical Activity Questionnaire |
| LDL-c | LDL-cholesterol |
| MANSA | Manchester Short Assessment of Quality of Life |
| MCS | Mental Component Summary |
| MEDAS | Mediterranean Diet Adherence Screener |
| MEDIS-FFQ | Mediterranean Diet Score Short Food Frequency Questionnaire |
| MetS | Metabolic Syndrome |
| MDS | Mediterranean Diet Score |
| MINOA | Mediterranean Diet in Older Adults |
| MOOSE | Meta-Analyses of Observational Studies in Epidemiology |
| MSQOL-54 | Multiple Sclerosis Quality of Life-54 Instrument |
| OAI | Osteoarthritis initiative |
| PCA | Principal component analysis |
| PCS | Physical component summary |
| PREDIMED | Prevention with Mediterranean Diet |
| PUFA | Polyunsaturated fatty acids |
| rMED | relative Mediterranean Score |
| RAND-36 | RAND 36-Item General Health Survey |
| RFS | Recommended Food Score |
| ROS | Reactive oxygen species |
| SF-12 | 12-Item Short-Form Health Outcome Survey |
| SF-36 | 36-item Short Form Health Outcome Study |
| SUN | Seguimento Universidad de Navarra |
| SWLS | Satisfaction with Life Scale |
| T1D/T2DM | Type 1/2 Diabetes Mellitus |
| UAM-MDP | Mediterranean Dietary Pattern Index |
| WELL | Wellbeing, Eating and Exercise for a Long Life |
| WHR | Waist/hip ratio |
| WHOQoL-BREF | World Health Organization Quality of Life Brief Version |