Avocados do contain carotenoids, in and of themselves. And thanks to their fat content, you can get good absorption of the carotenoids that they contain. However, if you happen to be consuming an avocado-free meal or snack that contains very little fat yet rich amounts of carotenoids, some added avocado might go a long way in improving your carotenoid absorption and vitamin A nourishment. Salad greens—including romaine lettuce—and mixed greens like kale, chard, and spinach are great examples of very low fat, carotenoid-rich foods that might be eaten alone but would have more of their carotenoid-richness transferred over into your body with the help of some added avocado.