Well, I'm of mixed feelings about this. I don't buy the "it's a slippery slope" argument that funding health education leads to banning products and mandating behavior. Libertarians like to use that argument for any proposed government spending - except, of course, the programs that benefit them. But I also don't buy the "government can fix this!" optimist approach.
On the one hand, I do think an education-based approach to healthy lifestyles can work. On the other, I generally think that government funding of medical interventions for unhealthy lifestyles is not the proper use of taxpayer dollars.
What's the distinction? It's that "medical interventions" part. There is a tiny body of research now - which will surely grow, in the future - relating to re-setting body chemistry so that fat people can better metabolize stored fat (by burning it as energy) instead of relying on blood sugar for energy. It's a method of rebooting the insulin metabolism, as I understand it, and has been very successful in rats.
However.
Lab rats only get to eat what you put in front of them, don't they? All the metabolic readjustment in the world wouldn't work on a person who flatly refuses to eat anything but high-fat, high-sugar, high-salt second- and third-order foods. That is to say, edible constructs that are far from what humans evolved to eat.
Taxpayer dollars are, by necessity, limited. What we can use them for is limited. Should we use them to fund research on the Lap-Band, or to underwrite gastric bypass surgeries? I think ... not. Should we use them to promote diets, and dietary products, created by for-profit institutions? Again, I think not.
I don't think we should use taxpayer dollars for A LOT of healthcare-related expenses that they are currently used for. And I definitely think we should not be using taxpayer dollars to fix a problem that is, almost all the time, solvable through behavior modification.
Yes, even the morbidly obese person whose internal chemistry is completely borked can change it, and restore hirself to health, most of the time if the effort is made consistently, consciously, and forever. It's the "forever" part where people tend to stick. Most people apparently can't keep it up for more than a few weeks or months.
But given the evidence that even people who choose bariatric surgery will fail to keep the weight off - because they fail to consciously and permanently modify their behavior - I really don't see the point in putting government money into it.
Some people will overdose on heroin. Some people will drink themselves to death. And some people will eat themselves to death. I don't think tax dollars should be going to try to "cure" these people. They aren't sick, not in the same sense that someone is sick with leukemia that can be cured with a bone-marrow transplant, or with pneumonia that can be cured with penicillin.
Along with the evidence (in rats) that this or that gene or hormone therapy can promote weight loss despite a high-calorie diet, there is even more evidence (in actual humans) that behavior modification - diet and exercise - can both promote weight loss and reverse obesity-related conditions including high blood pressure, arthritis, cardiovascular disease, and of course type II diabetes.
We can't make fat people live in a lab. They are out here in the world trying to live and work. The basic "how to" on being healthy hasn't changed since the beginning of time. Some people will make it a priority to get, or stay, healthy. Some people won't. And that's something government can't control ... and shouldn't try to.
All that said: government also, at some point, is going to have to exclude fat people from certain anti-discriminatory classes. A 400 pound inmate should not be able to sue the prison system because there's not a big enough jumpsuit. A 600 pound heart patient (or his family) should not be able to sue the hospital because the EMTs couldn't get him into the ambulance.
If you can't get out your door under your own power, you'd better make sure you're light enough for a couple of normal paramedics to lift you, is all I'm saying.