Under a new bill approved by the state Senate, California would prohibit chiropractors from treating allergies. Senate Minority Leader Bob Huff, a Republican from Diamond Bar, says some chiropractors have claimed they can use lasers to diagnose and treat hypersensitivity to certain foods, medicine and environmental allergies, without evidence that the treatments work. His bill prohibits chiropractors from treating allergies because the state defines it as practicing medicine. It also bans chiropractors from advertising that they can treat allergies. The ban includes but is not limited to laser therapy. The bill is supported by the California Medical Association but opposed by the state Board of Chiropractic Examiners and the California Chiropractic Association.