Diet quality screener (MEDAS)
The 14-item Mediterranean Diet Adherence Screener used in the PREDIMED trial: a validated diet-quality vital sign that takes about two minutes. One point per criterion met.
Higher is closer to the Mediterranean pattern. The PREDIMED intervention worked by raising this score over time; track it at each visit.
1. Do you use olive oil as main culinary fat?
1 point if: Yes
2. How much olive oil do you consume in a given day (including oil used for frying, salads, out-of-house meals, etc.)?
1 point if: 4 or more tablespoons
3. How many vegetable servings do you consume per day? (1 serving: 200 g; consider side dishes as half a serving)
1 point if: 2 or more (at least 1 portion raw or as a salad)
4. How many fruit units (including natural fruit juices) do you consume per day?
1 point if: 3 or more
5. How many servings of red meat, hamburger, or meat products (ham, sausage, etc.) do you consume per day? (1 serving: 100-150 g)
1 point if: Fewer than 1
6. How many servings of butter, margarine, or cream do you consume per day? (1 serving: 12 g)
1 point if: Fewer than 1
7. How many sweet or carbonated beverages do you drink per day?
1 point if: Fewer than 1
8. How much wine do you drink per week?
1 point if: 7 or more glasses
Scored per the original instrument. If you do not drink, do not start; this point simply is not earned (AHA 2026 guidance).
9. How many servings of legumes do you consume per week? (1 serving: 150 g)
1 point if: 3 or more
10. How many servings of fish or shellfish do you consume per week? (1 serving: 100-150 g of fish or 4-5 units or 200 g of shellfish)
1 point if: 3 or more
11. How many times per week do you consume commercial sweets or pastries (not homemade), such as cakes, cookies, biscuits, or custard?
1 point if: Fewer than 3
12. How many servings of nuts (including peanuts) do you consume per week? (1 serving: 30 g)
1 point if: 3 or more
13. Do you preferentially consume chicken, turkey, or rabbit meat instead of veal, pork, hamburger, or sausage?
1 point if: Yes
14. How many times per week do you consume vegetables, pasta, rice, or other dishes seasoned with sofrito (sauce made with tomato and onion, leek, or garlic and simmered with olive oil)?
1 point if: 2 or more
Instrument: Martinez-Gonzalez MA, et al. A 14-Item Mediterranean Diet Assessment Tool and Obesity Indexes among High-Risk Subjects: The PREDIMED Trial. PLoS ONE. 2012;7(8):e43134. Source Open access under the Creative Commons Attribution License (CC BY). Scores stay in this browser; no server involved.