My starting point would be searching nih.gov. Google does a good job indexing them. On google use things like: site:nih.gov "reduction in migraine triggers

My starting point would be searching nih.gov. Google does a good job indexing them. On google use things like: site:nih.gov "reduction in migraine triggers" site:nih.gov "migraine triggers" And so on. Social media, blogs, news communities have intelligent well meaning people, but you will get mostly anecdotal data that may or may not apply to you. Very little feedback will be scientific in my opinion.