Welcome to Ask Doctor. Zac, a weekly column from news.com.au. This week, Dr. Zac Turner explains if it’s possible to be too clean. QUESTION: Hi Dr. Zac, is it possible to be too clean?

QUESTION: Hi Dr Zac, there’s this really annoying girl at my gym who keeps rabbiting on about how she starts every morning by swigging a quarter of a cup of olive oil before she hits the gym.

QUESTION: Hi Dr Zac, is it possible to be too clean? I really enjoy looking after my health and value cleanliness inside and out. I eat well and exercise regularly, but also really enjoy long ...