Blood drive -- J.R. Jones Conference Room, Laurel Regional Hospital, 7300 Van Dusen Road, Laurel / 2 p.m.-8 p.m. Tuesday. Registration: 301-497-7950.
Dinner with the doc -- Baum Auditorium, Harbor Hospital, 3001 S. Hanover St. / Learn how to prevent osteoporosis. Harbor Hospital rheumatologist Deep Dalal will speak at 5:30 p.m. Wednesday. Free, registration required. 410-350-2563.
Essentials in babysitting -- Howard County General Hospital Wellness Center, 11055 Little Patuxent Parkway, Columbia / 9 a.m.-2 p.m. tomorrow. Learn methods of managing children and how and when to use emergency procedures. Cost: $46, which includes lunch and certification. Registration: 410-740-7601.
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.
Breast and cervical screenings -- Harbor Hospital, 3001 S. Hanover St. / Screenings for women ages 40 to 64 who meet income requirements and live in the city. Free. 410-350-2001.
Blood pressure screenings -- Good Samaritan Hospital's Good Health Center, 5601 Loch Raven Blvd. / Free. No appointment necessary. 9 a.m.-4 p.m. Mondays-Fridays. 410-532-4100.
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. Johns 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.
Parkinson's caregivers -- Johns Hopkins at Green Spring Station Pavilion II, 10753 Falls Road, Lutherville / 10 a.m.-11:30 a.m. Thursday. 410-955-8975. For calendar listings, e-mail releases four weeks in advance to firstname.lastname@example.org or mail typed news releases to Health Calendar, Features, The Sun, 501 N. Calvert St., Baltimore 21278.