# Programs, Diets, and Rulesets

## Introduction

A program or diet is a collection of rules and it represents the underlying definition used to score and generate food suggestions.

Each rule is formed of two main elements in an "if-then" structure and it's triggered based on each user's [profile ](/graphql/start-here/core-concepts/user-profile.md)information, as follows:

* **IF** - the condition that triggers the rule, I.e. "If user's last vitamin D reading is below 20 ng/mL"
* **THEN** - the action to be executed when the rule is triggered, I.e. "Increase foods rich in vitamin D"

In the above example, the result will be that upon creation of a food suggestion, foods labeled "rich in vitamin D" will be prioritized for users who are assigned to that program and match the condition "vitamin D below 20 ng/mL". 

## Additional resources

For more information regarding programs, rulesets and diets, please check the following documentation:

* How to [create a program](https://docs.suggestic.com/console/access-the-main-menu/access-the-main-menu/programs/programs/create-a-program)
* How to [define rulesets](https://docs.suggestic.com/console/access-the-main-menu/access-the-main-menu/programs/user-segments/create-a-segment)


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