That's a dangerous statement.

Really? Dangerous? Like loaded gun in the hands of an angry monkey dangerous, or just riding a bike while wearing flip flops dangerous?

Your lifestyle is different to the lifestyle of the Chinese over the past few millennia.

I dunno, is it? China is a big place with lots of lifestyles represented. Most climates are represented on mainland China (because it is so big), so that factor is less important than contrasting constantly frozen Russia to constantly hot Australia. China and the US aren't all that different climatically speaking. I've been a vegetarian for 14 years...which is pretty common in China, due the large Buddhist population, but not all, or even most, Buddhists are vegetarian. America has had Chinese restaurants for three generations now. How different are my eating habits, really?

I sit around more than the Chinese did in the past...but I sit around more than my American parents and grandparents did at my age, too. We're a much more sedentary culture than prior generations. But, on the whole we don't eat anything like our parents or grandparents, either.

If the option is: Eat like an average American, because it is what we're accustomed to (where "accustomed" equals "roughly one generation of eating corn in every processed nugget of fatty sugar-laced goodness the mass-market food industry serves up"); or eat like folks did in some other culture 100, 500, or 1000 years ago, because it seems to be a healthier diet based on what we do know, then I'll take the latter option.

The average American diet is, to use your inflammatory language, "outright suicidal for an average middle-American". It's high fat, high sugar, low fiber, and low in nutrients (unless "fortified" with artificial concentrations of vitamins and minerals), and it is nothing like previous American generations diet. Dramatic change is probably exactly what Americans need.

Anyway, you've taken an extreme example of epicurean culture clash and compared it to a quite mild example. Extremely high fat, high salt, foods are not good for anybody. They may be the lesser evil of limited options, but they aren't healthy and no one is claiming they are (at least no one who limits their claims to that which has scientific backing).

Tofu has quite a lot of good science behind it, in addition to thousands or hundreds of years of consumption in China, Korea, Japan, Vietnam, Hong Kong, etc.

Anyway, I'm not saying you're wrong, just saying I think maybe you're conflating two very different things, and I've certainly never suggested anyone take up bizarre eating habits of other cultures merely because those other cultures have been doing it for years...just that it probably won't hurt you, if a nation of a billion people has been eating that way for dozens of generations. And, if we take a bit more moderate view on things, even the things I avoid (corn/HFCS, soy in non-tofu or fermented forms, heavily processed foods of any sort, etc.) aren't going to kill you tomorrow.

Everything on the shelf at a modern American grocery is roughly "safe". We live in a time when we have the privilege of dying of historically bizarre age-related diseases, even if we eat like crap most of our lives. So, you can shave ten years off of your life by eating lots of meat...but, putting it into perspective there was a time, just a couple hundred years ago even in modern cultures, when eating one piece of not-quite-fresh or not-quite-cooked meat could kill you within hours or days (assuming you're already weakened by poor nutrition, illness, etc.). Starvation can take you out in a few days to a couple of weeks. Parasites certainly contributed to many an early demise before modern medicine.

We now have the opportunity to see what long-term effects of foods are--something most of our ancestors didn't have the privilege of doing. Though, it is interesting that some things that were considered good for longevity based purely on anecdotal evidence (green tea, for example) have turned out to actually be good for longevity, as far as we can tell. Then again, many other such anecdotal longevity solutions will probably turn out to be unhealthy. Wives tales are funny that way.