Alzheimers Disease

Find out everything there is to know about Alzheimer's disease and stay updated on the latest news in memory loss with the comprehensive articles, interactive features and pictures at LiveScience.com. Learn more about this disease as scientists continue to make amazing discoveries about memory.

Latest about Alzheimers & Dementia

A senior man and woman smile as they walk along the beach during a sunset

Nearly half of global dementia cases could be delayed or prevented, scientists say

By Eric B. Larson, Laura Gitlin published

In a new study, scientists have identified 14 modifiable risk factors that boost dementia rates, but could be addressed.

Alzheimers & Dementia
illustration of a strand of RNA, which resembles DNA but has one strand instead of two

'Look at all this we don't understand': Study unravels whole new layer of Alzheimer's disease

By Nicoletta Lanese published

A new study begins to unpack an understudied aspect of brain biology and Alzheimer's disease.

Alzheimers & Dementia
Close-up image of an opened box of blue, diamond-shaped Viagra tablets with two pill packets sticking out towards the camera. The Pfizer logo can be clearly seen on the side of the box.

Active ingredient in Viagra tied to lower Alzheimer's risk — but don't get too excited

By Emily Cooke published

Once more, sildenafil, the main active component of the "little blue pill," has been found to be associated with a reduced risk of developing Alzheimer's disease.

Alzheimers & Dementia
close up on a person's hand as they use a pen to point at an image of 6 brain scans, labeled "PET amyloid and tau imaging"

Alzheimer's may be caused by immune cells thinking brain cells are bacteria, expert says

By Donald Weaver published

A new theory of Alzheimer's disease reassesses the role of beta-amyloid in the brain.

Alzheimers & Dementia
Medical illustration of a neuron, in blue, in the background being surrounded by a plaque of amyloid-beta protein, in yellow with the illustration visualizing how the proteins join together

Alzheimer's is transmissible in extremely rare scenarios

By Emily Cooke published

A small study suggests that "seeds" of Alzheimer's can be transferred from one person to another via certain medical procedures, leading to the disease later in life.

Alzheimers & Dementia
Social worker in foreground rests arm on shoulder of senior man who is sitting on a couch

Alzheimer's comes in at least 5 distinct forms, study reveals

By Emily Cooke published

Knowing that Alzheimer's comes in at least five distinct forms could change the treatment landscape, the scientists behind the new study say.

Alzheimers & Dementia
Illustration of small, spiky microglial cells (depicted in pink) interacting with larger neurons (in blue)

Brain inflammation may drive mood changes in Alzheimer's

By Emily Cooke published

Agitation, anxiety and depression seen in people with Alzheimer's may be driven by brain inflammation, in addition to abnormal proteins.

Alzheimers & Dementia
illustration of dna molecules depicted in rainbow colors

Gene variant carried by 1 in 5 people may guard against Alzheimer's and Parkinson's, massive study finds

By Dr. Alakananda Dasgupta published

An immune-related gene variant has been tied to a reduced risk of Alzheimer's and Parkinson's across a huge, diverse population of people.

Alzheimers & Dementia
close up of an older white man's hand as he uses a spoon to garnish a plate of broccolini with a sauce. Other vegetable dishes can be seen in the background of the image

'MIND diet,' intended to prevent dementia, doesn't offer significant brain benefit, trial suggests

By Nicoletta Lanese published

A clinical trial suggests that the MIND diet, which is intended to guard against dementia, offers little benefit over a standard diet in the short term.

Alzheimers & Dementia
a female medical provider wearing a short white lab coat and name tag prepares to give an older male patient a vaccine in his arm. He's waring a yellow polo and looking away from the camera towards the medical provider

Could vaccines prevent and treat Alzheimer's disease?

By Simon Spichak published

Scientists are testing vaccines as potential treatments for Alzheimer's, in an attempt to reign in harmful immune activity tied to the disease.

Alzheimers & Dementia
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