Dementia is caused by damage to or loss of nerve cells and their connections in the brain. Depending on the area of the brain that's damaged, dementia can affect people differently and cause different symptoms.
It mainly affects people over the age of 65. The likelihood of developing dementia increases significantly with age. One in 14 people aged over 65 has dementia. This rises to 1 in 6 for people aged over 80.
Lower levels of education, higher rates of poverty, and greater exposure to adversity and discrimination may also increase risk of Alzheimer's disease. Among all races, women are nearly two times more likely to be affected by Alzheimer's disease than men. The difference is due primarily to women living longer.
Many people affected by dementia are concerned that they may inherit or pass on dementia. The majority of dementia is not inherited by children and grandchildren. In rarer types of dementia there may be a strong genetic link, but these are only a tiny proportion of overall cases of dementia.
The average life expectancy figures for the most common types of dementia are as follows: Alzheimer's disease – around eight to 10 years. Life expectancy is less if the person is diagnosed in their 80s or 90s. A few people with Alzheimer's live for longer, sometimes for 15 or even 20 years.
Introduction: The five-word test (5WT) is a serial verbal memory test with semantic cuing. It is proposed to rapidly evaluate memory of aging people and has previously shown its sensitivity and its specificity in identifying patients with AD.
There is currently no "cure" for dementia. In fact, because dementia is caused by different diseases it is unlikely that there will be a single cure for dementia. Research is aimed at finding cures for dementia-causing diseases, such as Alzheimer's disease, frontotemporal dementia and dementia with Lewy bodies.
The current evidence indicates that while chronic stress may play a role in the development or progression of dementia, it does not necessarily cause dementia. Hopefully, further research can begin to uncover what role stress plays in a person's risk of developing dementia.
Generally, people with dementia become agitated due to three potential trigger categories: Medical, physiological and/or environmental. Medical triggers can include sickness, fever or pain, but it can also include issues that you might not initially think about, such as: Medication side effects.
Stay mentally and socially active. Engaging in mental or social activities may help to build up your brain's ability to cope with disease, relieve stress and improve your mood. This means doing these activities may help to delay, or even prevent, dementia from developing.
Age. According to a 2020 study , increasing age is the biggest known risk factor for dementia. The majority of people with dementia are over the age of 65, and the risk of this condition increases as you get older.
For most people with Alzheimer's — those who have the late-onset variety — symptoms first appear in their mid-60s or later. When the disease develops before age 65, it's considered early-onset Alzheimer's, which can begin as early as a person's 30s, although this is rare.
A 2019 study published in Journal of Alzheimer's Disease, showed among 165 participants (45 with diagnosed neurodegenerative disease, 120 controls) a supine sleep position (on back, head at body level) for more than 2 hours per night increased the risk of dementia by almost four times (3.7 times greater).
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There is no one test to determine if someone has dementia. Doctors diagnose Alzheimer's and other types of dementia based on a careful medical history, a physical examination, laboratory tests, and the characteristic changes in thinking, day-to-day function and behavior associated with each type.
A person in the later stages of dementia is likely to have a weak immune system. This means they have a higher risk of getting infections, which in some cases can last for a long time. One of the most common causes of death for people with dementia is pneumonia caused by an infection.
The key things that affect life expectancy include: Age: Most people with dementia are elderly and may be affected by other illnesses and chronic conditions. The frail elderly are more vulnerable to falls, infections and other diseases which could, unfortunately, cause an earlier death.
increasing confusion or poor judgment. greater memory loss, including a loss of events in the more distant past. needing assistance with tasks, such as getting dressed, bathing, and grooming. significant personality and behavior changes, often caused by agitation and unfounded suspicion.
As we age, our brains change, but Alzheimer's disease and related dementias are not an inevitable part of aging. In fact, up to 40% of dementia cases may be prevented or delayed. It helps to understand what's normal and what's not when it comes to brain health.
Alcohol consumption in excess has well-documented negative effects on both short- and long-term health, one of which is brain damage that can lead to Alzheimer's disease or other forms of dementia.
Women are more likely than men to develop dementia in their lifetimes. One of the main reasons for the greater prevalence of dementia among women is the longer life expectancy of women. of people living with dementia are women.