The short answer is yes, and we're doing it startlingly fast. Look around you as you drive down any street in America, there's meat, meat, and more meat. Humans are omnivores, but many of us (myself included in moments of weakness) pig out on the red meat whenever we can and our country's health is going straight into the crapper as a result.
Heart disease is at an all time high and diabeetus is right on its tail. Every year 785,000 Americans will have their first and what is statistically likely to be one of many, heart attacks. We also come in at number three of highest number of diabetics in the world. Seeing as how number one and too are China and India, who have multiple times higher populations than our wimpy 307 million, that's nothing to be proud of. The largely ignored fact is that humans are not designed for meat to be our primary source of nutrition! A meat and potatoes man is very unlikely to see his 70th birthday, which in a country that is supposedly most medically advanced in the world is a travesty of the highest order. The hilarious truth is that while our pharmaceutical companies are spending billions trying to cure high cholesterol and cancer, the cure has been with us the whole time. According to an unprecedented twenty year study conducted by cardiologist Caldwell B. Esselstyn, switching to an oil-free, plant-based diet will not only prevent cardiovascular disease, but also reverse effects already in place. He had a group of people who had previously had heart attacks switch to an entirely plant based diet and much to most other cardiologists surprise, all 17 compliant patients had zero additional heart-related symptoms. This simply reinforces the much under-publicized idea that Lipitor and quadruple bypasses only treat the symptom and not the disease.
Now, I'm a realist and don't expect the entire country to switch to a vegetarian diet, it simply isn't going to happen, but if we toned down on the meat to say... one meal a day, we could reclaim our position as king of the world. Higher life expectancy = more people producing more goods/services, its a win-win! All we have to do is put down the beef jerky for a carrot every now and again.