Can't disagree with the above.
I've been actively involved in clinical research for years, and also am a primary care physician.
Docs have tremendous amount of liability associated with anything we do or say, so we have every incentive to offer only fact-based opinions.
Deviations from such science are usually driven by someone's private agenda, commonly motivated by money or strict beliefs.
For example, anyone who derives revenue from the sale of supplements has a conflict of interest, and that recommendation might be tainted by their own personal benefit.
People want definitive answers, though, and there often are none.
Fact is, we don't know all the various agents and mechanisms that combine to start a cancer. We can perform the most thorough evaluation on the planet, and still not be able to detect cancer in microscopic amounts. Smoking certainly ruins the lungs over time (and presents about a ten-fold increase in the likelihood of contracting one of the top 7 forms of cancer), but we can never say for sure whether cancer will or will not happen. And people who have never been exposed to any appreciable inhaled irritants can still get lung cancer, though the chances are much lower.
So, if you drive a motorcycle, you might as well eat what you want, because you're taking bigger risks anyway.
But if you are risk-averse & safety conscious you should play the odds and try to live healthy.
That would involve daily aerobic exercise of 20 minutes or more, eating fresh fruit with every meal, adding whole grains and nuts daily, and consuming unlimited green vegetables. You'll get all the vitamins and minerals you ever need from this, and you won't need meat (green leafy veggies are an excellent source of iron). If you want meat, stick to white, which includes pork tenderloin. Eat only one serving of starch per meal (corn, beans, rice, bread, potatoes, pasta), and stay away from salt, fats, and sugar.
If you're counting (and you should be) fats contain 9 calories per gram, while starches have 4; therefore, you certainly
can lose weight by simply eliminating fats, but it's really about the calories. If you do 30 minutes of vigorous exercise daily, along with a full day of routine activity, you will burn roughly 2000 calories per day. One pound equals 3500 calories, so if you consume 3 meals daily of 500 calories each, you will lose 500 cal/day, or one pound/wk. You can obviously burn more than that with more activity; worldclass aerobic athletes can routinely burn 1000 cal/hr. But losing more than 1000 cal per day will only cause unsustainable consequences in the long run, so that kind of aggressiveness doesn't work.
I would also strongly advise to NOT mortgage your future by doing anything geared specifically to increase muscle mass; the risks aren't worth it.
Oh, and 2 glasses of red wine/day is also beneficial, so open up a good cabernet or merlot, and relax.