Hello, I'm Mark Lohen.

Welcome to the documentary from the BBC World Service.

This time it's BBC OS Conversations, where we bring people together to share their experiences.

Israel faces growing international isolation over the shocking images of starvation in Gaza.

UN-backed global food security experts have warned that the worst-case scenario of famine is currently playing out.

It is, said the UN Secretary-General Antonio Guterres, a humanitarian catastrophe of epic proportions.

Israel imposed a total blockade on aid deliveries to Gaza at the beginning of March,

shortly before it resumed its military offensive against Hamas.

The country said it wanted to put pressure on the armed group to release the remaining

Israeli hostages.

After lifting the blockade, Israel has said there are no restrictions on aid deliveries,

which it coordinates, or any starvation. But charities say the aid being allowed in is only a fraction

of what's needed. They say Gaza needs to be flooded with supplies to prevent mass starvation.

So what is the reality on the ground? The BBC is banned by Israel from reporting in Gaza,

but with our conversations, we wanted to try to get a sense of what the two million people

living there are experiencing in terms of access to food, water and medicine.

We hear from journalists, doctors, and throughout the program, extracts from an audio diary

recorded during a typical day by Garda. She's a medical student. Here's the first.

I wake up after a night filled with terrifying sounds,

bomb-bang and the drones that never stopped.

My body actually was tired, my heart even more.

I tried to take a quick shower, but the water was freezing.

...