All food is healthy. Not all diets are. There are some foods that should form a bigger part of your diet than others. See
If you want to tune your diet more toward the former and away from the latter, these two tips have been scientifically demonstrated to work.
A lot of questions are taking the form of “How do I calculate the calories in…? These special snowflake questions all have the same answer.
To calculate the calories in something, you look up the calories per unit weight, weigh the food, and multiply. A simple web search will yield the nutrition facts...(more)