Does heat from a hot water bottle damage egg quality?

Dear Professor Winston,

I am currently on a long protocol IVF Stimulation with Menopur.  There is conflicting advice online about using a moderately warm hot water bottle/heat pad on the lower abdomen area during IVF stimulation.  Some say the gentle heat encourages the follicles to grow by promoting blood flow to the area.  Others say the heat damages egg quality and hinders follicle growth.  I would be most grateful if I could get your opinion, please.

I know it’s an inane question, but it’s been hard to get a definitive answer.  Thank you very much for your time.

Best wishes,


Dear I.,

I know of no evidence to support this idea.  The advice seems nonsense

Robert Winston