The thing that determines the healthiness of food is how much nutrients it contains. It also is how much energy your body gets from it.
The Food and Drug Administration (FDA)
Price Healthiness Likeability
Here's an easy way to remember: People are healthy, food is healthful.
Helps you get rid of the food that is bad and keeps the good foods in for healthiness.
Economics determines what food products will be processed and marketed. If there is a demand for a food, then food companies will produce it.
Healthiness. Bodily cleansing.
Healthiness.
When food is transported, steps need to be taken to keep it from spoiling during transport. This can mean canning, or freezing, or the addition of preservatives, or picking produce when unripe so that it will ripen during transport. All of these processes affect the consistency and flavour of the food, as well as its healthiness. Generally flavour, consistency and healthiness are impaired in the processes used for transporting, so local food will usually taste better, last longer, and be better for you.
Abundance of food determines macro-invertebrate abundance and diversity. Species can thrive when there is an abundance of their food sources.
pH
Generally speaking, the answer is YES. Italian food made in Italy is typically made with less oil and more natural vegetables than US Italian food. However, the exact "healthiness" depends on the particular restaurant or vendor.
It is a calculation that determines the % of cost to sales.