Hugh Pickens writes:
Scott Adams of Dilbert fame writes on his blog that science's biggest fail of all time is 'everything about diet and fitness':
I used to think fatty food made you fat. Now it seems the opposite is true. Eating lots of peanuts, avocados, and cheese, for example, probably decreases your appetite and keeps you thin. I used to think vitamins had been thoroughly studied for their health trade-offs. They haven’t. The reason you take one multivitamin pill a day is marketing, not science. I used to think the U.S. food pyramid was good science. In the past it was not, and I assume it is not now. I used to think drinking one glass of alcohol a day is good for health, but now I think that idea is probably just a correlation found in studies.
According to Adams, the direct problem of science is that it has been collectively steering an entire generation toward obesity, diabetes, and coronary problems. But the indirect problem might be worse: It is hard to trust science because it has a credibility issue that it earned. "I think science has earned its lack of credibility with the public. If you kick me in the balls for 20-years, how do you expect me to close my eyes and trust you?"
We all need to be responsible for ourselves. What I mean is, nobody gets more out of your life than you do, and any of your life choices can be guided by common knowledge, but you need to know your limitations and, specifically, how your body uniquely responds to different foods, medications, and exercise. So, whether any particular technique or diet or product is good for you needs to be viewed through the lens of your life experience. If a nutritionist knows what your diet needs to be better than you do without even knowing your lifestyle - you're doing it wrong.
So, yes, vegetables are good for you for obvious reasons, but don't eat the ones you're allergic to, and select for the ones with the proportion of vitamins you need. Don't use margarine, because that stuff is NOT healthier for you than butter... unless it is, because of a dairy intolerance, or whatever else. Pay attention, and apply the scientific knowledge which applies to your situation.
The only problem is that people don't want to think, don't want to do the work of keeping track of these things, they want someone else to do their thinking for them. And so the media carries the power to give the official record of the state of science, 30 seconds at a time.
Again, styep 1 is to tune out the advertisers, government agencies, doctors and nutritionists. That leaves Grandma I guess.