The expo will be from 10 a.m. to 4 p.m. at the Downtown Community Center, 28 E Main St. It is sponsored by the OKC Health and Wellness Group, a nonprofit organization dedicated to community efforts that inform and educate Oklahomans about various aspects of preventive health care. Weight loss, diet, breast cancer, pain management alternatives and hormone effects will be discussed during separate hourlong sessions. There will be health screenings, chair massages and samples of health products.