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A new drug, Donanemab, has been hailed as a turning point in the fight against Alzheimer's after a global trial confirms it slows cognitive decline.

One trial was shown to have 鈥渟ignificantly slowed鈥� the progression of the disease鈥攂y 35%.

Earlier this year, Lecanemab, the first drug to slow the destruction of the brain in Alzheimer's, received regulatory approval in America. Lecanemab was shown to slow the rate of cognitive decline by 27% in an 18 month study involving participants in the early stages of Alzheimer鈥檚.

Although not a cure, charities say the results in the journal JAMA mark a new era where Alzheimer's can be treated. The drug works in Alzheimer's disease, not in other types of dementia, such as vascular dementia.

But the new drugs are not risk-free treatments. Brain swelling was a common side-effect in up to a third of patients in the Donanemab trial.

The World Health Organisation forecasts more than 150m people around the world will be living with dementia by 2050. Until recently, we鈥檝e been told that there are currently no approaches that have been proven to prevent Alzheimer鈥檚 disease and related dementias.

But are we beginning to see a future where we can make dementia a chronic condition, one you live with and die with but don鈥檛 die from? Are we inching closer towards a treatment for dementia? Can we ultimately prevent or cure the disease? In the battle against dementia, is the end in sight?

Shaun Ley is joined by:

Reisa Sperling - Professor of Neurology at Harvard Medical School and Director of the Center for Alzheimer's Research and Treatment at Brigham and Women鈥檚 Hospital.

Dr Sandeep Jauhar - cardiologist and the author of "My Father's Brain", a memoir of his relationship with his father as he succumbed to dementia.

Sir John Hardy - Professor of Neurodegenerative Disease at University College London.

Also featuring:

Paola Barbarino - chief executive of Alzheimer's Disease International.

(Photo: Caregiver Nadia Chebil (L) helps Alzheimer's patient Jean-Marie (R) at "Les Papillons de Marcelle" house, in Arles, southeastern France, on May 9, 2023. Credit: Clement Mahoudeau/AFP via Getty Images)

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