Hi, it's William Brangham from PBS NewsHour. We're launching a new show. It's called Horizons,

and we're going to cover science and health and technology, everything from AI to climate change to genetic engineering.

We hope you'll tune in and find us on PBS, on YouTube, or wherever you get your podcasts.

I'm William Brangham, and this is Horizons.

In the land of plenty, a lot of what we eat is making us sick.

Ultra-processed foods make up more than half the average American diet,

and they're linked to rising rates of obesity and heart disease.

Health and Human Services Secretary Robert F. Kennedy Jr.

says the administration has a solution.

President Trump and I are going to transform our food system.

But will this plan really make America healthy again?

Coming up next. Welcome to Horizons. This is a brand new program from PBS News. We will be covering the latest in science and health and technology. That's everything from

genetics to climate change to artificial intelligence. This is a thrilling time, but it is also a

complex and confusing one. So we're going to try and help make sense of the rapid changes

that are occurring everywhere around us. We're going to start today talking about food.

We live in an era of abundance, but a lot of what we eat is making us sick. Three quarters of us

have at least one chronic disease, like obesity, hypertension, diabetes. About one in five

kids in America is obese.

And the vast majority of our health care dollars are spent treating these diseases.

Health and Human Services Secretary Robert F. Kennedy Jr. is leading the so-called Maha movement, as they call it, to, quote, make America healthy again.

And they're targeting, among other things, the ultra-processed foods and

chemicals in the average American diet. So will this work? And what would it really take to address

...