The LA Times reports that the U.S. spends more on healthcare than other countries with similar economic status, yet its health outcomes are worse in many ways.
There are some excellent graphs highlighting the prevailing evidence.
It’s interesting to note how the UK compares with other OECD countries. Once the UK had the gold standard in public healthcare when it introduced the NHS. But now, apart from the US, the UK has the worst outcomes, in particular in important areas like cancer treatment.
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Dr Alf's Blog 
Dr Alf brings us an interesting article to which there is a simple conclusion.
The American Medical Association keeps the number of medical students at a finite number by making the requirements to be a doctor more onerous than is the case in many other countries,consequently American doctors are very well paid.
American medicine is very high tech and with some exceptions uses the latest treatments and drugs unlike the NHS.
This adds further to the expense.
Private medical insurers are only really interested in people who are working and people who are healthy and under the age of 74.
This makes individual insurance policies very expensive for the self employed,those out of work and pensioners.
The expense can be mitigated by exclusion riders but generally many people simply pay doctors bills which are made worse by the costs of American drugs which exceed the costs of drugs in Canada by a very wide margin.
America is a great place to work in if you are bright,university educated,young and have up to date skills.
If you happen to be older and without these attributes the pressure of work is stressful and without sensible exercise and diet the cost is rather too many overweight people who get heart disease, cancer, diabetes, high blood pressure and other problems which then creates the need for yet more expensive treatments.
When these treatments go wrong ambulance chasing lawyers enter the scene,encouraging patients to sue hospitals and doctors for negligence,over medication and all manner of transgressions.
The costs of these legal actions then feed into insurance premiums for private medical insurance which when added to all the other costs mean that Americans spend 16% of GDP on healthcare whereas in the UK it is about 6.5% if Adult Social Care costs and PIP benefits are stripped out.
The stress,pressure to perform and do better is greater there than it is in Europe and the UK so mortality is worse and morbidity is worse for those who are uninsured(about 50 million people),who were supposed to be helped by Obamacare and whatever Donald Trump eventually puts in its place.