Addiction and mental health writer (English)

Im looking for a writer (English) with experience about addiction and mental health topics, the ideal candidate must understand this specific addiction rehab niche. Ideally, the candidate must be able to write minimum 50.000 words a month.

All the articles will be around 1000 words.
Please, include the price per 1000 words article on your proposal, I will not read any offer without this.