Avocados contain fiber and a great deal of vitamins. It can also help you lower bad cholesterol (LDL) and maintain your cells due to their high content of monosaturated fats. But fat still remains fat. A single avocado contains 240 calories which is about 10%-20% of a person’s ideal calory intake and ingesting too many calories can lead to artery-clogging problems. One should stick to about half or 1 avocado a day if eaten raw (so not avocado chips, for example).