Soursop, also known as guanabana and other names. The fruit can cause Parkinson's-like symptoms but also contains chemicals that are potentially beneficial. "The chemicals are called tryptamine-derived alkaloids. They're similar in structure to melatonin, a hormone involved in sleep regulation that can have protective effects on dopamine neurons."
youtube.com/watch?v=PPGaXEn...
Edit: I can't get the video to work. Copy the post title and paste in search at youtube.com will work, or try link below.