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五. If you want to find out how Big Data is helping to make the world a better place, there's no better example than the uses being found for it in healthcare(保健).Big Data in healthcare is being used to treat ill people and to better people's life. The trend(趋势)now is to understand as much about a person as possible, as early in their life as possible, so that if the person gets ill,they can get early treatment which is far more simple and less expensive than if it had not been found until later. So to take a look at Big Data in healthcare, let's start at the beginning-before we even get ill. Smart phones are just the start. The apps(应用软件)on the smart phone can help us count how far we walk in a day, or help us plan what to eat for three meals. Millions of us are now using smart phones to try and live healthier lives. What's more, a number of wearable(可佩戴的)devices such as Fitbit have also appeared. These devices can help us track our progress(跟踪进展)and upload(上传)our data alongside everyone else's. In the very near future, we could also be sharing this data with our doctor who will use it as part of his or her diagnostic toolbox(诊断依据) when we get ill and visit them. Even if there's nothing wrong with our body, access to this data about the state of our health can help doctors monitor our health, to prevent possible illness, and to give us treatment as early as possible if we do get ill.【缺少答案,请补充】