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Hello and welcome to Health Check from the BBC.
I'm Claudia Hammond and for the next half an hour I have stories for you from the world of health.
In a moment, how do you tackle months of malnutrition and a lack of health care?
The challenge of distributing aid in Gaza.
And to help me today I have journalist Andrew Green joining me fresh from the Global Health Summit in Berlin.
How are you?
Doing well.
Thanks for having me.
What do you have for us today?
So I'll be looking at an ultra-processed food ban in California schools that was just passed.
And what's the answer to constipation?
We'll hear how there's more to it than fiber and fluids.
First to Gaza.
While the ceasefire is in place, aid has finally started flowing into the region.
In August, a famine was officially declared.
The health system is at breaking point and there is a lack of sanitation and supplies for many residents.
Now that aid trucks have been allowed in, in large numbers,
we want to know where you even start tackling such huge health problems in the population.
On Tuesday afternoon I spoke to Olga Sherevko who's in Gaza and is the spokesperson for the United Nations Office for the Coordination of Humanitarian Affairs and she told me what's happening on the ground in terms of aid.