imo ehealth will only make it easier to detect illness and make it for people to faster react, and nothing else.
It can be used to detect the symptoms earlier too. Therefore people can make some steps to avoid such disease to occur.
that's the general idea. improve detection to allow for quicker intervention. a lot of cancer wouldn't be fatal if detected on time.
Health is something you can't go cheap. If there is a cure out there for your illness, even the cheapest person would spend everything he has.
Of course you can get health also cheap, its not always expensive.
Drink and eat the right food, sleep enough and avoid stress, meditate, move, stretch and strengthen your body and you have the best requirements for healt.
It can be used preventive, but it can also cure you, if you have the disease already.
