Secrets Of Your Supermarket Food Episode Rating Graph

Sian Williams and Stefan Gates present the documentary lifting the lid on the growth, production and sale of supermarket food. They focus on dairy products, visiting a dairy farm to find out how they supply the huge demand for milk - and also finding out why plant-based milk alternatives can cost four times as much. Plus, a report on the sugar content of some of the most popular yoghurts on the market.

Sian Williams, Stefan Gates and Nisha Katona investigate how the food we eat can affect our wellbeing. Stefan visits the London Sleep Centre to explore how what we eat and drink can drastically affect the quality of our sleep, and undertakes an experiment to see how excessive amounts of caffeine, alcohol and takeaways alter his sleep patterns. Meanwhile, Sian takes a look at changes to portion sizes over the past three decades, and Nisha meets dietitian Hannah Whittaker to discuss superfoods.

Sian Williams, Stefan Gates and Nisha Katona return to lift the lid on production and sale of supermarket food, beginning with an investigation into snacks and treat. With the help of the Hill family, Sian asks whether it is possible to tell the difference between branded biscuits and the cheaper versions, while Stefan examines how junk food affects good gut bacteria.

Stefan Gates reports on whether British grass-fed beef is the best option for people concerned about food miles, and Sian Williams finds out whether bottled water is worth the high mark-up over tap water. Plus, reports on the healthiness of lunchtime meal deals and how to avoid bacteria when cooking with and storing rice.