Below are links to research articles on the effectiveness of Chiropractic for various health issues. You will find many more research articles at www.uschirodirectory.com/research.
Headaches and migraines
http://uschirodirectory.com/research/item/639-chiropractic-migraine-headaches.html
http://uschirodirectory.com/research/item/519-headaches-migraine-chiropractic-vs-medication-effectiveness-safety.html
http://uschirodirectory.com/research/item/481-migraine-headaches-and-chiropractic.html
http://uschirodirectory.com/research/item/753-case-report-the-efficacy-of-chiropractic-adjustments-in-the-care-of-migraine-headache-with-patients-presenting-with-cervical-disc-bulge.html
Whiplash
http://uschirodirectory.com/research/item/493-whiplash-disorders-and-neck-pain.html
Neck pain
http://uschirodirectory.com/research/item/506-acute-neck-pain-torticollis-disability-and-chiropractic-patient-satisfaction-results.html
http://uschirodirectory.com/research/item/502-chronic-neck-pain-and-chiropractic-a-comparative-study-with-massage-therapy.html
http://uschirodirectory.com/research/item/486-neck-pain-and-chiropractic.html