If you search the Internet and Youtube, you will come across many articles and videos explaining the health benefits of soursop leaves, especiall in treating cancer.
The problem faced by most consumers is - where to get the soursop leaves. There are virtually no supply in Singapore.
If you buy the soursop leaves in the market, you face these possible problems - you do not get fresh leaves or the leaves could be grown with pesticides. You have to wash off the pesticides.
David Soh has obtained a supply of soursop leaves from Malaysia and Indonesia that are fresh and are not grown with pesticides.
You can read his e-book which is available at http://www.tankinlian.com/cart.aspx?ID=42. It is free.
If you wish to give it a try, you can order the leaves here: www.soursopleaftea.com.