求改正英文文章文法及改錯處.THANK

Dementia disease, another name: ‘Alzheimer’s disease’, it is due to brain disorders, it will occur in old age, and dementia is progressive while resulting from long-term decline due to damage or disease in the brain, it'll be aggressive to interfere with daily life, it will affect patient to forget many things, for example: money, language, praxis, gnosis, executive, etc…but patient may remember long time ago things; dementia is not everyone will get it, nowadays , we don’t know why we get it, there are about 25 million patients and they can’t be completely cured, but we can prevent and reduce the degree of damage.
Dementia is caused by damage to brain cells. It affects the ability of brain cells to work. When brain cells cannot normal work, in turn it will affect brain operation, it will give rise to thinking, behavior and feelings issues. Because there are many distinct regions in the brain, each of which is responsible for different functions; when cells in a particular region are damaged, that region cannot carry out its functions normally.
In 2005, 25 million people were contracted with it. In the w orld,about 5 million new patient are increasing every year, so we can see dementia is growing fast,also the number of patient will grow doubly within every 20 years, and in the Asia Pacific region, they estimate the dementia cases will increase to 64.6 million by 2050. Many patients are over 65 years of age, in the prevalence of patient's age,only minority of people under 60, but after 65,the rate will bouble every 5 years.
The dementia affects patient in many things, If the patient suffered from different illnesses and varying degrees of influence, then the dementia will cause daily life problems , the main influence is memory, because it will create many behavioral problems, example of some case, the patient forget a few hours ago things i.e.where he is going, forget some people's name and relationship with him, in other case, the patient just forget some memory, e.g.6-8 months history,

係啊.. 因為真係好緊急... 可唔可以幫幫手改改文法??? 盡改都好....

你係咪由翻譯網直譯架??
真係好難明..想幫都幫唔到.
想提出一點既係..
effect係名詞而affect先係動詞-.-