While dementia has many nonheritable causes, it can also run in families. Inheriting certain genes can increase a person’s risk of developing dementia.
Dementia is the general term for symptoms affecting a person’s memory, thinking, and communication. It can be a symptom of many different neurological conditions, such as Alzheimer’s disease.
This article discusses the causes, prevention, and treatment of dementia.
Damage to a person’s brain cells causes dementia symptoms. The damaged brain cells cannot communicate as they usually do with one another, leading to symptoms of the condition.
Genes are instructions in a person’s DNA that control a person’s characteristics, such as eye color and height. Biological parents pass their genes down to their children.
Inheriting certain genes
Researchers have identified some rare genes that
There are other inheritable gene mutations that almost guarantee someone
Having any of these genes may increase the risk of Alzheimer’s symptoms appearing early on.
However, this condition does not typically have a single genetic cause, as multiple genes and lifestyle factors can influence a person’s risk. People can also develop Alzheimer’s without having a family history.
Frontotemporal dementia is an uncommon type of dementia. However, health experts believe it also has strong genetic links. Around 1 in 8 people with frontotemporal dementia have family members who also had the condition. This type of dementia affects people’s behavior and language.
There is no one test for dementia. Doctors start with a physical exam, including checking the person’s vital signs. This helps assess whether they have an underlying condition causing cognitive difficulties.
Doctors will also review the individual’s medical and family history to check for dementia risk factors. Diagnosis
- cognitive and neurological tests that assess a person’s thinking, language, and memory skills
- brain scans to identify strokes, tumors, and other problems that can cause dementia
- psychiatric evaluations
- cerebrospinal fluid (CSF) tests to measure the levels of proteins or other substances in CSF that may indicate Alzheimer’s or other types of dementia
Doctors also can test people for the genes that may cause dementia.
People may also have combinations of two or more types of dementia conditions, which doctors call mixed dementia.
- controlling or treating high blood pressure
- keeping their blood sugar within certain levels
- eating a nutritious diet that includes:
- fruits and vegetables, whole grains, lean meats, and seafood
- unsaturated fats such as olive oil, low fat or nonfat dairy products
- staying physically and mentally active
- preventing social isolation and loneliness by staying connected with family and friends
- treating hearing problems and hearing loss
- preventing or avoiding head injuries
- drinking less or no alcohol
- quitting or avoiding smoking
Doctors can also prescribe medication to manage dementia symptoms, such as anxiety or behavior changes.
The following are some questions people frequently ask about dementia.
How likely is someone to get dementia if it runs in their family?
People with a parent or sibling with Alzheimer’s disease have an increased risk of developing it themselves. Their risk increases again if more than one biological parent or sibling has Alzheimer’s.
According to the Centers for Disease Control and Prevention (CDC), having a close relative with Alzheimer’s increases a person’s risk of developing it by
Who is most at risk for dementia?
Although getting older
What can trigger dementia?
According to a
- lower levels of education
- having high blood pressure, which doctors call hypertension
- having hearing impairment
- having depression
- being physical inactive
- having diabetes
- having low social contact
- excessive alcohol consumption
- traumatic brain injuries
- air pollution
What side of the family does dementia come from?
People can inherit the genes linked to Alzheimer’s disease from either biological parent.
What can families do to avoid dementia?
There is no way to avoid dementia completely. However, avoiding triggers and following certain lifestyle habits can help reduce a family’s dementia risk.
Dementia can run in families. However, people can develop symptoms without having a family history of dementia.
Although there is no cure for dementia, lifestyle changes may help reduce a person’s risk of developing it. Additionally, medication can help manage symptoms in people who develop the condition.