If you are owner of a real website(ie not made for selling links only ) and it is genuine PR3+ in health niche, I would like to buy paid guest post. My site is high quality legit health/business site,which you can easily put in your real site. PM me you offer and paypal address. I have few pr4-5 high quality websites in health etc for which I can offer blogposts in exchange of your link too.
So are you looking for the health niche or the business niche? Obviously anything can be a "business" but for the purposes of a website it seems to me that they are two very different things. I only ask because I have business related sites but not health related. Perhaps you can specify a bit more?