People make bad decisions, so it's science's fault? I don't know if i'm just missing something here, but this seems a lot less like a failing of science and a lot more like the ravings of a person who doesn't understand how science works. Nutrition is a balance, it's not as simple as saying "I thought fatty food made you fat, but turns out it doesn't guise!". Vitamins have been/are vigorously studied, it's not like scientists are clueless about their effects. My personal opinion is that he, like many, probably got duped by the downright horrible state of science reporting in the media. Now that the headlines haven't come true, it seems to make sense that those bumbling scientists had no idea what they were talking about! Scientific data about diet, health, and really anything else generally requires a lot of expertise to interpret. Headlines like to make conclusions of studies cut and dry, when the reality is that each study usually only contributes to the understanding of a system, and is not an answer in and of itself. The only way that science itself can be responsible for obesity, diabetes, and coronary problems is perhaps that since we have science we can have richer diets, and live longer lives, increasing the likelihood that those diseases will kill us as opposed to having a grizzly bear gnaw our faces off. The hard truth about it is that the public in general is really, REALLY ignorant when it comes to scientific issues, and even just how science works. Science is what keeps you alive past 30, gives you food a plenty, and every other modern amenity that you can think of, so really if diabetes, obesity, and coronary heart problems are your chief concerns i think you owe science a lot, not the other way around. Science is not a "mostly wrong" situation by design. Science is a systematic method of examination, using careful observation and logic to arrive at conclusions based on evidence - it is designed specifically to find what is Correct, not what is Incorrect.