When you have low volume of traffic, you need to sell products (which can be ebooks, amazon hard goods, etc, so each sale can bring you $20-$30 of revenue) and you work on list building, bringing in more traffic and creating more depth and width to your site with good content. As traffic builds you can start looking at monetizing more people on your site via mobile apps, paid content, contextual advertising, cpc and cpa. Once you hit a critical mass and have enough pageviews and visitors per month, you can launch into the cpm networks and selling ad space. Without much effort in the health market you can make $3.50 to $6.00/thousand ad views (put 3-6 ads on a page), with more effort and the right niches you can make as much as $20/thousand. There are also opportunities for companies or products to sponsor a section or all of your site, content placement, selling links, selling advertising on your newsletter emails, and more, just depends on your time, effort and ability to run your team.