Maintain your brain -- The Baltimore County Department of Aging, in partnership with the Alzheimer's Association, will sponsor free sessions at local senior centers. For a list of times and locations, call 410-887-2594.
Plastic surgery lecture -- Woodholme Medical Office Building, 1838 Greene Tree Road, Suite 260, Pikesville / Learn about cosmetic breast surgery and thread lift procedures. A light meal will be provided. 6:30 p.m.-8:30 p.m. Thursday. Free, pre-registration required. 410-601-9355.
Type 2 diabetes -- Greater Baltimore Medical Center's Geckle Diabetes & Nutrition Center, 6569 N. Charles St., Physicians' Pavilion East, Suite 507, Towson / Days and times vary. Registration: 443-849-2036.
Walking program -- Harbor Hospital, held at the Centre at Glen Burnie, 6711 Ritchie Highway / 8 a.m.-10 a.m. daily. Free. Registration required. 410-350-8255.
Indoor walking program -- Wheels Skating Center, 1200 Odenton Road, Odenton / Co-sponsored by Baltimore Washington Medical Center and O'Malley Senior Center. 9 a.m.-10 a.m. Mondays, Wednesdays and Fridays. Free. Registration required. 410-222-6227.
Lung cancer -- Harbor Hospital, 3001 S. Hanover St. / Computerized tomography (CT) scans for those older than 50 with a history of smoking, exposure to asbestos or secondhand smoke. $50. 410-350-2563.
Breast and cervical screenings -- Franklin Square Hospital Center, 9000 Franklin Square Drive / Screenings for women ages 40 to 65 who meet income requirements. Free. 443-777-8138.
ALS -- St. John's Episcopal Church, Center for Ministry and Education Auditorium, 9120 Frederick Road, Ellicott City / 1 p.m.-3 p.m. tomorrow. 301-978-9855.
Adults with epilepsy -- Abingdon Library, 2510 Tollgate Road, Abingdon / 6 p.m.-8 p.m. Monday. 410-828-7700, ext. 1247.
Crohns disease and colitis -- St. Joseph Medical Center, Canticle Room, 7601 Osler Drive, Towson / 7 p.m. Monday. 410-337-1479.
Breast cancer -- HopeWell Cancer Support, 10628 Falls Road, Brooklandville / 7 p.m.-8:30 p.m. Monday. 410-832-2719.
Stroke -- Baltimore Washington Medical Center, 301 Hospital Drive, Glen Burnie / 6 p.m. second Tuesdays. 410-787-4118.
Cardiac patients -- St. Agnes Hospital's Community Room A, 900 Caton Ave. / noon Tuesday. 410-368-2246.
Parkinson's disease -- Howard County General Hospital, 5755 Cedar Lane, Columbia / 10 a.m. Thursday. 410-844-4756.
Parkinson's disease -- Johns Hopkins Green Spring Station, 10753 Falls Road, Lutherville / 2 p.m.-4 p.m. Thursday. 410-955-8795.
For calendar listings, e-mail releases four weeks in advance to email@example.com or mail typed news releases to Health Calendar, Features, The Sun, 501 N. Calvert St., Baltimore 21278.