It’s a long way from rats to clinical practice. Rats don’t live nearly as long as humans. A man’s chances of having prostate cancer are about the same as his age. Age 60=60%, Age 80=80%. Vegetables are good for you in general, when part of a balanced diet. Nobody’s every shown that vegans live forever.
Nope. However, when one regularly eats things like tofu and seaweed it just seems like it...so in a sense an argument, on some level, could be waged for immortality.