Population growth and population aging are the main reasons behind a large rise in global dementia cases. The world population is projected to reach 8.5 billion in 2030 and increase further to 9.7 billion in 2050 and 11.2 billion by 2100.
getting dementia are: high blood pressure. increasingly stiff and blocked arteries (known as 'atherosclerosis') high blood cholesterol levels. being overweight and physically unfit.
Age is the biggest risk factor for dementia, and the number of Australians living with dementia is projected to increase with more Australians living to older ages.
Some of the more common triggers for dementia like a change in environment, having personal space invaded, or being emotionally overwhelmed may be easier to handle if you mentally practice your response before you react.
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 causes probably include a combination of age-related changes in the brain, along with genetic, environmental, and lifestyle factors. The importance of any one of these factors in increasing or decreasing the risk of Alzheimer's disease may differ from person to person.
Dementia is caused by many different diseases or injuries that directly and indirectly damage the brain. Alzheimer disease is the most common form and may contribute to 60–70% of cases.
There are many reasons why stress could be linked to dementia. Stress affects the immune system, which is known to play an important role in the development of dementia. A key hormone released when you're stressed, cortisol, has been linked to problems with memory.
Some of the world's lowest dementia rates are found in Amazonian indigenous groups. As scientists around the world seek solutions for Alzheimer's disease, a new study reveals that two indigenous groups in the Bolivian Amazon have among the lowest rates of dementia in the world.
While there seems to be no significant effect of higher intelligence on cognitive decline, there might be an association with lower dementia risk. One explanation for this finding is that more intelligent people start at a higher cognitive ability level and decline at the same speed as other people.
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.
The Mini-Cog test.
A third test, known as the Mini-Cog, takes 2 to 4 minutes to administer and involves asking patients to recall three words after drawing a picture of a clock. If a patient shows no difficulties recalling the words, it is inferred that he or she does not have dementia.
The five-minute cognitive test (FCT) was designed to capture deficits in five domains of cognitive abilities, including episodic memory, language fluency, time orientation, visuospatial function, and executive function.
Excessive alcohol consumption over a lengthy time period can lead to brain damage, and may increase your risk of developing dementia. However, drinking alcohol in moderation has not been conclusively linked to an increased dementia risk, nor has it been shown to offer significant protection against developing dementia.
We all inherit a copy of some form of APOE from each parent. Those who inherit one copy of APOE-e4 from their mother or father have an increased risk of developing Alzheimer's. Those who inherit two copies from their mother and father have an even higher risk, but not a certainty.
“Dementia is irreversible when caused by degenerative disease or trauma, but might be reversible in some cases when caused by drugs, alcohol, hormone or vitamin imbalances, or depression,” explains The Cleveland Clinic. “The frequency of 'treatable' causes of dementia is believed to be about 20 percent.”
Family history by the numbers
In absolute numbers, a 2% annual risk means that two out of 100 65-year-olds will develop dementia every year. Family history raises the 2% annual risk by about 30%, to 2.6% per year. That means going from 20 cases in a group of 1,000 to 26 in 1,000, or six additional cases in 1,000.
There's no certain way to prevent all types of dementia, as researchers are still investigating how the condition develops. However, there's good evidence that a healthy lifestyle can help reduce your risk of developing dementia when you're older.
Change in routine
People with dementia often rely on their routines as a source of comfort. A daily routine helps a person know what to expect. This means that a sudden disruption in routine may cause dementia symptoms to get worse. This is especially true if a person experiences stress.
Specifically, among study participants who had dementia after age 64, the average score on the 1932 intelligence test was 32.1, compared with 36.2 for participants in the control group. The test-score difference between people with and without dementia became statistically significant at age 72.