So is there a virus out there that will do the opposite? Or maybe some gene modifications that could be made?
Here's another (in mice, not sure if they've tried people yet): http://www.bbc.co.uk/news/health-22458428
The best thing people can do to change their gut flora is to cut back on sugar and increase dietary fibre.
But it's also raising hard questions about why we think it's okay to sell so much sugar in foods...
The best thing people can do to change their gut flora
Diet change can, at best, improve the ratios of beneficial vs harmful microbes, but it can't introduce missing microbes that aren't there at all... hence the fecal transplant.One possibility is that a host that gains weight easily will be more resilient in times of famine.