Oestrogen: The Killer in Our Midst. How to combat the biggest health threat today The author Chris Woollams has extensively researched the causes of cancer, & in this book provides information about the oestrogen pool which is abnormally high in most individuals due to synthetic hormones & chemical toxins. This oestrogen pool may be the related to many rapidly-growing male & female cancers. The book brings together research on the dangers of oestrogen & also provides information about how to combat these dangers.