Write a brief summary of the passage in the video. Be sure to include only the main idea and essential supporting details from the text.

The passage in the video discusses the benefits of adopting a plant-based diet. The main idea is that plant-based diets are not only good for individual health but also for the environment. The speaker explains that plant-based diets can reduce the risk of chronic diseases such as heart disease and obesity. They also highlight the environmental benefits, stating that adopting a plant-based diet can reduce greenhouse gas emissions, conserve water, and help combat deforestation. The speaker suggests that switching to a plant-based diet can lead to a healthier and more sustainable future.