I have had neck pain for years. A physical therapist suggested that I try a buckwheat pillow. So I ordered the Hullo small and have used it for months now to thoroughly give it a try. Unfortunately, my neck pain increased and I began having headaches which I am certain was associated with the pillow use. Removing some of the fill didn’t help. I stopped using the pillow and though my chronic neck issues are still present the increased neck pain and headaches are gone.