Science gives us the tools to better understand obesity, addictions and so forth. In time, we may find good solutions. Nobody ever said that science was a magic spell that would quickly and easily fix every human problem. That is the kind of thing that religious people say about god--despite the obvious fact that science works consistently where god constantly fails. It was not god that brought the US infant mortality rate down from 50% to 6/1000 in the past 200 years.
I just spoke yesterday to a sweet Mexican woman whose grandmother had 22 children, of whom 11 survived to adulthood! This lady has three lovely kids, all of whom will probably, barring accidents or rare illness, live long enough to have grandkids of their own.
No thanks to god or religion, since the grandmother was at least as devout a Catholic as the granddaughter, and no doubt spent a lot of time praying desperately (to no avail) for her babies to live. Clean water, vaccinations and good nutrition have kept more babies healthy than praying ever did.
No matter how much they denigrate science as useless compared to religion or spirit or whatever, I don't see many theists rejecting the goodies that science brings us. And the few that do, like the people who don't vaccinate their kids and rely on prayer alone to heal polio, suffer the consequences. (Or rather, sadly, the kids suffer the consequences...)