Food families allow you to determine which foods are closely related.
Biologists have arranged the species of plants and animals into a taxonomy, a type of hierarchy, that shows the relationships between the species. There is, for example, a plant kingdom and an animal kingdom, and each are divided into phylums, classes, orders, families, genuses, and down to the level of the species.
The family is the taxonomic rank usually used to consider the relationships of foods.
Foods in the same family often share characteristics, such as:
If a food provokes allergy symptoms or makes you ill in any way (such as headaches, stomach ache, diarrhea), its relatives in the same family: