In this programme we explore the realities of island diets. Ruth Alexander hears how diets are changing, and what this means for population health. Indigenous diets were limited to what grew in the native soil or could be raised or caught in the limited space available. Today imported, often processed foods are becoming increasingly popular. We start in the Faroe Islands, in the North Atlantic Ocean between Iceland and the United Kingdom. Traditionally the Faroese diet is protein heavy, fermented wind dried lamb is a staple and the poor soil makes growing a wide range of vegetables challenging. Reporter Tim Ecott travelled to the Faroe Islands for this programme to report on how diets there have changed. We then look South to the Pacific Islands, starting with the coral atoll nation of Kiribati. The coral ground makes it difficult to grow food to supplement the diet of seafood. Ruth speaks to dietitian and public health nutritionist Dr Libby Swanepoel from the Australian Centre for Pacific Islands Research based at the University of the Sunshine Coast, Libby makes the case for seaweed cultivation to supplement diets and incomes. In contrast the nation of Fiji in the Pacific Ocean has volcanic soils, and an array of fruit and vegetables can be grown. Despite this communities have increasingly turned to imported processed foods, contributing to a health crisis. Sashi Kiran, founder of FRIEND Fiji - the Foundation for Rural Integrated Enterprises and Development – talks about how this can be addressed. Presented by Ruth Alexander. Produced by Beatrice Pickup. (Image: part of the Kiribati island nation, palm tree covered island surrounded by blue sea. Credit: Getty/BBC)

All-you-can-eat restaurants are popular, as are high-end buffets at big weddings and posh hotels. But what’s the trick to making money out of them, and what happens to the leftovers? Ruth Alexander finds out the tricks of the trade with John Wood of catering software company Kitchen Cut, Sandeep Sreedharan of Goa, and Michael Brown of Cosmo, in Manchester, UK. If you would like to get in touch with the show, please email: thefoodchain@bbc.co.uk (Picture: Hands of someone serving out chicken at a buffet. Credit: Getty/BBC)Producer: Elisabeth Mahy

Today’s Sephardic Jewish community has its roots in Spain and Portugal. The Hispanic Jews lived for many centuries in those countries but faced increasing persecution in the 13th and 15th Centuries. Many were forced to convert to Christianity, but some secretly continued their Jewish faith and practices. In 1478, the Spanish Christian royalty created the Inquisition, a series of trials aimed at identifying those who had not converted. Food and methods of food preparation are frequently cited as evidence against Jewish people in Spanish Inquisition trial records. Ultimately the Jews were expelled from Spain and they fled to other countries. This was the beginning of a diaspora which carried its Spanish food traditions with it. Ruth Alexander meets three women who have published Sephardic cookbooks reflecting on this turbulent past. Hélène Jawhara Piñer is a French historian and chef, she studied Spanish Inquisition trial records for her book Sephardi: Cooking the History. Stella Hanan Cohen lives in Zimbabwe; in her book Stella’s Sephardic Table she records the cuisine of the Sephardic community that settled on the island of Rhodes, now part of Greece. Genie Milgrom was born in Cuba and lives in Florida in the United States, she found handwritten recipes that had been passed down by generations of women in her family, which she published as ‘The Recipes of My 15 Grandmothers’. Presenter: Ruth Alexander Producer: Beatrice Pickup (Photo: A dish of swiss chard and chickpeas cooked by Ruth Alexander. Credit: BBC)

What are the nutritional challenges, and the highs and lows of food in space? As NASA looks at creating a lunar habitat, and even launching a mission to Mars, how can the right food be prepared and transported to keep astronauts both healthy, and happy? Marie Keyworth speaks to veteran astronaut Nicole Stott, and NASA’s top nutrition expert Scott Smith, who leads the Nutritional Biochemistry Laboratory at NASA’s Johnson Space Center, in Houston, Texas. Marie finds out what it’s really like to eat in zero gravity, and how nutrition is being used to counteract the extreme health impacts of spaceflight on the human body. Studying astronaut diets in space might even help our understanding of nutrition here on earth. Presented by Marie Keyworth. Produced by Sarah Treanor.(Image: astronaut in space holding a burger. Credit: Getty / BBC)

Global food prices reached record highs this year due to a combination of factors including the war in Ukraine, rising energy prices and poor harvests. Prices are now falling, but remain higher than last year. In this programme Ruth Alexander talks to three farmers on three different continents, to discuss if they’re profiting from these higher prices, the impact of higher costs, and whether farmers ultimately have any influence over the price we pay in the shops. Ruth is joined by Anne Gitau, a poultry farmer in Nairobi Kenya; John Kelly, a dairy farmer in Country Wicklow Ireland; and Bob Lowe, a beef and barley farmer in Alberta, Canada. The BBC’s Global Trade Correspondent Dharshini David joins the discussion to explain what is happening in global feed and fertiliser markets. Presented by Ruth Alexander. Produced by Beatrice Pickup. (Image: trays of meat on a butcher’s counter with prices. Credit: Getty/BBC)

We may be living in a disposable age, but many of us probably own at least one hand-me-down pot, pan or kitchen utensil. They can be heavy and cumbersome to use but promise quality and reliability - a steadfast companion in the kitchen. They hold sentimental value too: memories of home, of loved ones who have passed, and ancestral traditions. In this programme, Ruth Alexander explores the history of some of these pieces, the sentimental and practical value to their owners, and the stories contained within. She speaks to three amateur cooks: Steven Hopper from Mississippi in the US, Alice Smith from South Wales in the UK, and Amrita Amesur in Hyderabad, India. We would love to hear about your precious pots and pans - please email your stories and pictures to thefoodchain@bbc.co.uk(Picture: An old saucepan. Credit: Getty/BBC)Producer: Elisabeth Mahy

Today’s seed industry is dominated by a handful of companies. Approximately 60% of the market is controlled by just four companies. Many of the seeds planted by farmers are controlled by international property rights or patents, that limit how they can be used. Court cases have centred around whether farmers have the right to save and reuse seeds for future harvests. In this programme we’ll chart the history of the seed industry, from the 19th century, when the United States government sent seeds in the post to farmers for free, to the growth of genetics in the 20th century which set the foundations for today’s market. Ruth Alexander is joined by Courtney Fullilove, Associate Professor of History at Wesleyan University in Connecticut, United States, and author of ‘Profit of the Earth: the global seeds of American Agriculture'; Frank Terhorst, Head of Strategy and Sustainability in the Crop Sciences Division of Bayer Global, the biggest seed company in the world; Michael Fakhri, the United Nation’s Special Rapporteur on the right to food, and Professor at the Oregon University School of Law in the United States; and Dr Tamene Yohannes, from the Ethiopian Biodiversity Institute in Ethiopia, which works with community seed banks around the country. Presented by Ruth Alexander. Produced by Beatrice Pickup. (Image: a man holding a pile of seeds in two hands. Credit: Getty/BBC)

Mental health is a hugely complex issue with many causes. There’s no simple answer, then, when it comes to therapies for conditions like anxiety and depression. But a growing body of research is now supporting a connection between nutrition and mental health - that what you eat can have a role to play in reducing symptoms of depression and anxiety. It’s an emerging field, but dietary recommendations for patients are already being made in clinical settings. Jordan Dunbar explores the scientific evidence for this, and what a ‘happier diet’ might look like. He speaks to Professor Felice Jacka, Director of the Food and Mood Centre at Deakin University in Australia; US psychiatrist Dr Emily Deans; UK-based chef, Daniel Edwards, and nutritionist Dr Nada Benajiba, who’s based in Saudi Arabia. If you've been affected by the content of this programme, information and support is available via the BBC Action Line. Go to https://www.bbc.co.uk/actionline If you would like to get in touch with the show, please email: thefoodchain@bbc.co.uk (Picture: Woman holding a pot of mixed berries. Credit: Getty/BBC)Producer: Elisabeth Mahy

Meet the flavourists – the people who bring together art and science to create the flavours in our food. Each crisp, soft drink, or toothpaste flavour has been concocted by someone in a lab who has spent years studying why things taste good. In this programme, Ruth Alexander visits the International Flavour Research Centre at the University of Nottingham in the UK, where flavour chemist Professor Ian Fisk demonstrates machines that can act as an artificial nose and tongue. Historian Dr Nadia Berenstein explains how this profession began and evolved alongside the boom in consumer goods in the 20th century. And we meet a master flavourist at the top of their field – Yukiko Ando Ovesen from Japan, who works for the international flavour and fragrance firm, Firmenich. Presented by Ruth Alexander Produced by Beatrice Pickup (Image: girl eating doughnut with brightly coloured sprinkles. Credit: Getty/BBC)

Food contamination is a serious public health problem around the world. The World Health Organisation estimates that 600 million – almost 1 in 10 people in the world – fall ill after eating contaminated food and 420,000 die every year. In this episode, Ruth Alexander speaks to some of the people whose lives have been shaped by serious food safety breaches and how they are working to ensure food safety and strengthen our food systems. She speaks to US food policy campaigner, Darin Detwiler, whose son Riley died following an E. coli outbreak in 1993, food safety consultant Lone Jespersen, and Tina Potter, head of incidents at the Food Standards Agency for England, Wales and Northern Ireland.If you would like to get in touch with the show, please email: thefoodchain@bbc.co.uk(Picture: Scientist inspecting meat sample in laboratory. Credit: Getty/BBC)Producer: Elisabeth Mahy