Earlier quoted context omitted.
He's just regurgitating conventional medical wisdom that's routine in countries that aren't the US. We've been talking about the risks of over-testing, over-diagnosis, and over-treatment for many years. Mostly in the context of full body MRI scans for healthy people, or early testing for prostate cancer, but also many other things.
What's the problem with full body MRI scans for healthy people? They don't cause any harm, just cost money.
Here's some articles. (Note how old these are. This isn't new advice).
http://www.bbc.co.uk/programmes/articles/15g8LGyBzYvMHpq6qNh...
> The first problem she uncovers is that detailed but general scans, such as a full body MRI or CT scan, can frequently bring to light small abnormalities which have no implications for health at all. They are the equivalent of tiny moles, freckles or scars on the outside of our body. Yet if they are picked up on a scan, then they can cause worry and further, much more invasive, testing – usually for no reason.
> The second problem that she uncovers is that even for some very specific tests, such as ultrasound of the arteries to assess the risk of stroke, the treatment available to rectify any small issues found carries very high risks to the patient. In the case of the ultrasound of the Carotid arteries in the neck, surgery to help clear any blockages would not be advised unless the patient had already had a stroke, or mini-stroke, making a test on an otherwise healthy person pointless.
http://www.independent.co.uk/life-style/health-and-families/...
> An American patient who had a whole body scan described how it threw up an early warning of lung cancer. He had a lung biopsy after a nodule was detected but it turned out to be a healed scar, posing no threat. However, the investigation involved four days in hospital, a painful procedure, several weeks of recuperation - and a $47,000 (£25,000) bill at the end.
http://news.bbc.co.uk/1/hi/health/7150583.stm
> "Full body MOTs" may often find benign abnormalities - so-called false positives - while missing real problems, said Professor Nicholas Wald, a specialist in preventive medicine.