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Alzheimer's disease. Series of coloured computed tomography (CT) scans of an axial section through the head of a 74-year-old patient with Alzheimer's disease. The front of the brain (brown) is at the top. Alzheimer's is a neurodegenerative disease and a common cause of dementia in the elderly. It causes brain atrophy (decrease in size), shown here by the enlarged ventricle cavities (white, at centre of brain) and the widened pale blue regions. The brain shrinkage caused by Alzheimer's disease leads to memory loss, confusion, personality changes and ultimately death. The cause of Alzheimer's disease is not known and there is no cure.

Mind

Treating Alzheimer's as having many causes may help us beat it

We have focused on the same suspected cause of Alzheimer's for too long. Thinking of it as resulting from multiple overlapping risk factors gives us an opportunity to fight back

Leader

Vaccine skin patch

Health

Skin patch coated in covid-19 vaccine may work better than injections

News

Empty airport

Health

Australia has had zero measles in 2021 due to covid-19 border closure

News

koala being vaccinated

Environment

This koala was first to be vaccinated against chlamydia in new trial

News

Lake Hazen base camp on Ellesmere Island

Environment

Climate change linked to risk of viruses jumping species in the Arctic

News

Guinea confirms West Africa’s first case of deadly Marburg virus

Health

Guinea confirms West Africa’s first case of deadly Marburg virus

News

Frogs are battling their own terrible pandemic – can we stop it?

Environment

Frogs are battling their own terrible pandemic – can we stop it?

Features

sick person

Health

Some people can tell if you have an infection just by looking at you

News

Traded wild animals carry 75 per cent of diseases humans can catch

Life

Traded wild animals carry 75 per cent of diseases humans can catch

News

badger

Environment

Cattle vaccine to be trialled in England in fight against bovine TB

A vaccine and new test to tackle bovine tuberculosis in cattle are being deployed in field trials in England, as the UK government shifts away from culling badgers to curb the disease

News

Health

Early dementia more likely to impact Black and Hispanic people in US

News

Health

Rising BMI and diabetes have stalled the decline of heart disease

News

Health

Global plan aims to make vaccines for future pandemics within 100 days

News

Definition

Endemic