The Lemonade Diet is more of a juice fast or a body cleanse or detox since you're living on lemonade for the entire time.

You're not eating food of any kind - not even soup.

Lemonade Diet Ebook will learn you an excellent diet based on lemonade.
The diet was created to help rid your body of toxins that build up when you don't exercise or eat right. It's designed to help clear and clean your body's digestive tract, kidneys, and liver, while carrying out all the bad stuff that's settled in over time.

One of the reasons it might be gaining in popularity is because of the success a few celebrities have had with it.