Guardian Science Weekly

Is there hope on the horizon for patients with Alzheimer’s?

Loading player...
A trial is under way to find out if a £100 blood test could transform the way that the NHS diagnoses Alzheimer’s disease. Alzheimer’s is the leading cause of dementia and diagnosis is currently costly and time-consuming. To find out how this blood test could benefit patients, Ian Sample talks to Prof Jonathan Schott, who is co-leading the trial. He explains what the test involves and why it could pave the way for exciting new treatments for the devastating disease. Help support our independent journalism at theguardian.com/sciencepod
23 Sep 2025 English United Kingdom Science · Nature

Other recent episodes

Meningitis explained: who is most at risk?

Over the weekend, news emerged of an outbreak of meningitis among university and school students in Kent in south-east England. The outbreak has killed two young people and left several others seriously ill. Health officials confirmed that the meningitis B strain has been identified in some of the cases. To…
18 Mar 15 min

What’s behind the injectable peptide craze?

Grey-market injectable peptides – a category of substances with obscure, alphanumeric names such as BPC-157, GHK-Cu, or TB-500 – have developed a devoted following among biohackers and health optimisers. To understand how these unregulated substances have become mainstream and what they could be doing in our bodies, Madeleine Finlay hears…
17 Mar 17 min

Was Iran really building a nuclear weapon?

Among the many justifications Donald Trump has presented for the US and Israel attacking Iran has been the supposedly imminent threat posed by its nuclear weapons programme. But how close was the country really to developing an atomic weapon? Ian Sample hears from Kelsey Davenport, the director of non-proliferation policy…
10 Mar 16 min

Will China own the green energy future?

The conflict in the Middle East has sent energy prices soaring, and for countries that import a high proportion of their fuel, it’s a reminder of the perils of energy dependence. As the recipient of almost 90% of Iran’s crude oil, China knows this only too well. Which partly explains…
5 Mar 17 min
All episodes