Guardian Science Weekly

From the archive: what are the hidden costs of our obsession with fish oil pills?

Loading player...
They may be one of the world’s favourite supplements but, according to a study from earlier this year, more than one in 10 fish oil capsules are rancid. Most of the oil comes from Peruvian anchovetas, a type of anchovy that is also used to feed pigs, poultry and farmed fish. And despite catching more than 4m tonnes a year of anchovetas to cater to the global demand, large industry players want to scale this up even further. In this episode from January 2022, Madeleine Finlay speaks to environment journalist Richa Syal about why so many fish oil pills are rancid, and hears from journalist Dan Collyns in Chimbote, Peru, about how the industry is affecting the local environment and its residents. Help support our independent journalism at theguardian.com/sciencepod
16 Aug 2022 English United Kingdom Science · Nature

Other recent episodes

The incredible science of the sleeping brain

Humans have been wondering why we sleep for thousands of years. Is sleep’s purpose rest and relaxation, memory consolidation or maybe cognitive processing? In the last 15 years, scientists have discovered another possible explanation – waste disposal. In 2012 neuroscientist Maiken Nedergaard’s lab discovered that the brain has its own…
2 Jun 14 min

Are robots nearing their ChatGPT moment?

Last month at Beijing’s half marathon, a robot named Lightning beat the human world record by nearly seven minutes. It’s the latest in a string of AI-powered milestones that have got people wondering whether robots are about to enter our everyday lives, just as chatbots have. And the country leading…
28 May 17 min

Do red-light masks really keep you looking young?

Home red-light therapy devices have exploded in popularity as masks, body wraps and mittens promise to reduce wrinkles, redness and even acne. But do the claims stack up, and what other benefits are scientists investigating? Ian Sample hears from his co-host, Madeleine Finlay, and the consultant dermatologist Dr Jonathan Kentley…
26 May 14 min

Can a name change transform PCOS outcomes for women?

After more than a decade of global consultation, polycystic ovary syndrome – which affects as many as one in eight women – has been renamed. The condition is caused by high levels of androgens, which can lead to symptoms such as excess hair, weight gain and irregular periods. To understand…
21 May 16 min
All episodes