| No. | Name of Lifestyle | Third Class | Second Class | First Class | Type | No. of Studies |
|---|---|---|---|---|---|---|
| 1 | Lacto-vegetarian | NA | Diet style | Habits+behaviors | No statistical significance factor | 1 |
| 2 | Nonvegetarian | NA | Diet style | Habits+behaviors | Reference | 1 |
| 3 | Number of meals | NA | Diet style | Habits+behaviors | No statistical significance factor | 1 |
| 4 | Pesco-vegetarian | NA | Diet style | Habits+behaviors | No statistical significance factor | 1 |
| 5 | Semi-vegetarian | NA | Diet style | Habits+behaviors | No statistical significance factor | 1 |
| 6 | Traditional Mediterranean diet score | NA | Diet style | Habits+behaviors | No statistical significance factor | 1 |
| 7 | Vegan | NA | Diet style | Habits+behaviors | Protective factor No statistical significance factor | 1 |