Cholesterol link

Study shows migraine with aura is related to high cholesterol. Not sure which is cause and which is effect, but worth looking into if you have auras.

http://www.internalmedicinenews.com/news/neurology/single-article/migraine-with-aura-may-mean-higher-cholesterol/dd8d0ce99b.html

Several earlier studies also suggest that there is an association between lipid levels and migraine :
ncbi.nlm.nih.gov/pubmed/17986270

Also, recent research suggests possible relationship between migraine and obesity, and weight loss can help alleviate migraines:
ncbi.nlm.nih.gov/pubmed/21700645