There are certain things about mayonnaise which does make it bad for you, especially for those who eat it on a regular basis. Regular mayonnaise tends to be high in saturated fats which are unhealthy for you and can lead to a number of long term health problems over time. There are however “light†varieties available for those who enjoy the taste of mayonnaise but do not want to consume a lot of calories.
If you are on a diet but still want to use mayonnaise in some of your recipes or spread it on your sandwiches, it is highly recommended that you look for low-fat or non-fat varieties which will be able to provide you with the taste you love without all of the calories that are associated with regular mayonnaise.