Does anyone know about the GM-CSF protein?

Is this something you can increase in your body through food?
I’ve read that having this protein can help decrease inflammation caused by the flu – I’m curious to know if you can get this protein in any food?
The anti-inflammatory diet?
Is is something that even comes from food, it’s something way above my brain capacity – understanding what GM-CSF actually is… so thought I’d ask you brain boxes here.