That is why the first advice of the Spanish Heart Foundation is to choose different restaurants that take into account the welfare of their customers, where they serve more vegetables, fruits and vegetables, etc., so-called "green menu".
Once chosen the restaurant is appropriate, the following recommendation of Dr. Sanz is to require the use of olive oil to flavor food (without going over, no more than 6 tablespoons), eating meals steamed, baked or to grilled instead of fried and avoid excess salt. Besides all this, if you suffer from any specific disease, it is best for your diet adjustments to it.
If we eat in a restaurant, a good option may be to ask first two, which generally tend to be rich in carbohydrates and fiber. The latter often contain enough fat. When eating out try not to abuse alcohol, one glass of wine is beneficial, more is not advisable, as well as having a lot of calories, alcohol causes us to lose some control of what we eat, so they tend to eat something else. Finally, if you have made the decision to overeat at lunch then remember to compensate with a light dinner.