>> Nearly useless Being able to catch a cancer early on because of increased surveillance is hugely valuable. Part of why cancer is so dangerous is because it

>> Nearly useless Being able to catch a cancer early on because of increased surveillance is hugely valuable. Part of why cancer is so dangerous is because it often grows/spreads for years before you get any symptoms. If you're in the unlucky cohort of <50 years old and have an asymptomatic cancer, it might go decades before anyone thinks to check. And mind, increased surveillance typically means once a year tests or scans, so it's not so overly onerous. It's possible even that generally being in frequent contact with doctors and more seriously minding your health could have net benefits in preventing other maladies as well.