The image is a slide from a presentation on the basic rationale of carbohydrate restriction. The slide has a blue background with white text. On the left side of the slide, there is an illustration of a water tap with the words "Carbohydrate" and "Insulin" written above it. Below the illustration, there are two lines of text that explain the concept of carbohydrates. 

The first line of text explains that carbohydrates are not just a fuel but also a control element and via insulin. The second line explains that dietary fat (TAG source) is stored fat.

In the bottom right corner of the image, there appears to be a person sitting in front of a projector screen, looking at the slide.