To be honest I don't know
I've had a sore area at the lower end between the ribs - like low-grade indigestion. I've had background reflux some nights, i.e. it starts in that region, works quickly upwards into my chin, cheek and sometimes into my head. It's on my list to talk to the Nurse about on Monday.
I may take some 'magnesia' soon. From the knees down, I think I'm fine .