> For the complete documentation index, see [llms.txt](https://a3626a.gitbook.io/hungryanimals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://a3626a.gitbook.io/hungryanimals/5.4/basics/disease-effect.md).

# Disease Effect

## Introduction

`disease.json` contains list of fields that affects effect of disease.

## Grammar

{% code title="disease.json" %}

```
{
  "multiply_weight_bmr" : double,
  "multiply_movement_speed" : double
}
```

{% endcode %}

## Usage

`"multiply_weigth_bmr"` : multiply to weigth bmr of patient\
`"multiply_movement_speed"` : multiply to movement speed of patient\
\
For example, `"multiply_weigth_bmr" : 3.0` will cause the animal to consume 300% more energy(weight), as a result overall 400% usage.