Helen Zoe Veit

It's something that can cause ongoing stress and anxiety at mealtimes.

So what makes a child a picky eater? What's the best way to handle it? Helen Zoe Veit is a professor of history at Michigan State University, specialising in American food in the 19th and 20th centuries.

Her latest book is Picky, How American Children Became the Fussiest Eaters in History.

Helen, thanks for your time.