6. Olive oil
Some vegetables, especially those containing vitamin A, should be consumed with olive oil because this is the only way for your body to absorb nutrients from other foods. Chop some carrots, cabbage, tomatoes. Then add some salt, spices, and drizzle some olive oil over your salad. You can also use olive oil while preparing meat or fish, just keep in mind that oil contains a lot of calories – moderation is of the key importance.