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Hello, and welcome back to Everyday Science.

When the NHS rejected two new treatments for Alzheimer’s disease last year on the grounds that they are not cost-effective, medical charities and some doctors branded the decision a blow to patients. But this week, an independent review has found that the drugs don’t deliver any worthwhile benefits.

Why can’t experts agree on whether the drugs work or not – and what are the other options for patients and their families?

Shorts