I have two friends who are currently undergoing chemotherapy. They're different ages, in different countries with different cancers – one far more advanced than the other. What they share is the debilitating nausea and upset stomach caused by their treatment. How and what can they eat?

I've turned to Rebecca Katz, author of the award-winning The Cancer-Fighting Kitchen: Nourishing, Big-Flavor Recipes for Cancer Treatment and Recovery for help in The Living Hour today.

Katz's nutritional recipes are science-based. They are designed to boost a patient's immune system during all forms of cancer treatment, which can be harder on the body than cancer itself. She tells you how to make teas, soups and salads, smoothies, grains and desserts. Her recipes are grouped around specific side effects. She tells you which spices and herbs are especially helpful for those with impaired taste buds.

If you have questions or need some tips about what to cook for yourself or a friend or relative, post below. Then join us today at 1pm ET (6pm BST) for an invaluable chat.