Eliminate migraine with diet and exercise - for real?

Greetings - with all the advice I get, I'm wondering if anyone has eliminated their migraines strictly through only a diet and exercise program. I have severe photophobia (daughter says "oh, so you are scared of light then, that' what it means" and...she is a physician, it hurt...like she was mocking me, and I would think she of all in my family would be educated enough to know what it means). Light sensitivity makes me very nauseous, and prolonged visual stimulation leads to aura. I have motion sickness, and sometimes they come on for no reason. I have tried, and diet and exercise has not been a complete cure-all. I know the drill - hydration, clean food, no spice, etc. But to totally wipe out migraines with a diet and exercise routine...anybody have success?