Close to 15% of the global population will experience migraines at some time or another. Despite decades of empirical and anecdotal evidence, studies and research, the exact causes of migraines are still unknown. Sufferers, or migrainers, are advised to avoid migraine triggers; those that are well documented. Other research suggests links between environment, genetics, diet, and hypothyroidism. Associated conditions and symptoms with one or all of the above include depression, anxiety and recurring/constant neck pain.