Thursday 15

LANGSTON-BROWN WALKERS, walk around the neighborhood. 9:30 a.m. today and Sept. 22, Langston-Brown Senior Center, 2121 N. Culpeper St., Arlington. Free. 703-228-6300.

MENTAL HEALTH SUPPORT, for those who have parents or siblings suffering from depression, schizophrenia, bipolar disorder or obsessive-compulsive disorder, sponsored by National Alliance for the Mentally Ill, 7-8:30 p.m., Our Lady Queen of Peace Church Ministry Center, 2700 S. 19th St., Arlington. Free. 703-892-2197.

Friday 16

SEATED STRENGTH TRAINING, low-impact aerobic classes for seniors. 9 a.m., Madison Senior Center, 3829 N. Stafford St., Arlington. Seven classes, $24.50; registration required. 703-228-5285.

LEE WALKERS, weekly walking program, travel by van to Fort Marcy Park in Fairfax. 10 a.m., Lee Senior Center, 5722 Lee Hwy., Arlington. $2.50; registration required. 703-228-0555.

BLOOD PRESSURE SCREENING, seniors. 10 a.m., Madison Senior Center, 3829 N. Stafford St., Arlington. Free. 703-228-5285.

PERSONAL SAFETY ISSUES, seniors, presented by Thomas Rakowski of the Arlington County Police Department. 10:30 a.m., Aurora Hills Senior Center, 735 S. 18th St., Arlington. Free; registration required. 703-228-5722.

Sunday 18

POSTPARTUM DEPRESSION FORUM, with Karen Kleiman of Postpartum Stress Center, David Rubinow of National Institute of Mental Health and Adrienne Griffen, sponsored by Women's and Children's Wellness Foundation. Noon-2 p.m., Virginia Hospital Center, John T. Hazel conference center, 1701 N. George Mason Dr., Arlington. Free; registration required. 301-881-9464, 703-243-2904 or 703-536-9469.

MENTAL HEALTH SUPPORT, for parents of children, teens and young adults who have had diagnoses of psychiatric illness, 1-2:30 p.m., Trinity Presbyterian Church, 16th and North Inglewood Streets, Arlington. Free. 703-862-9588.

Monday 19

ARLINGTON WATER EXERCISES, seniors. 8:40 a.m. Mondays, Wednesdays and Fridays, Washington-Lee High School pool, 1300 N. Quincy St.; and noon Tuesdays, Wakefield High School pool, 4901 S. Chesterfield Rd. For registration, fees and schedule, call 703-228-4745.

WALTER REED WALKERS, weekly walking program, travel to Old Town Alexandria. 9:30 a.m., meet at Walter Reed Senior Center trailer, 2909 S. 16th St., Arlington. $2.50; reservations required. 703-228-5703.

ALEXANDRIA BLOOD DRIVE, sponsored by Inova Blood Donor Services. Noon-8 p.m. Mondays and Wednesdays and 8 a.m.-4 p.m. Tuesdays, Thursdays and Fridays, Inova Alexandria Hospital, 4320 Seminary Rd., 703-504-3500; 4-7 p.m. Mondays-Thursdays, Inova Mount Vernon Hospital, 2501 Parker's Lane. 703-664-7229. Registration required.

OBSESSIVE-COMPULSIVE DISORDERS, support group for people with obsessive and compulsive disorders. 7:30-9:30 p.m. Mondays, St. Andrew's Episcopal Church, 4000 Lorcom Lane, Arlington. Free. 703-250-1126.

Tuesday 20

ALTERNATIVE TREATMENT, discussed by Fred Schack of George Mason University. 10 a.m., Culpepper Garden Senior Center, 4435 N. Pershing Dr., Arlington. Free; registration required. 703-228-4403.

Wednesday 21

SENIOR WALKING CLUB, bus ride to River Farm in Alexandria, walk to Belle Haven, and a picnic. 9:30 a.m., meet at Culpepper Garden Senior Center, 4435 N. Pershing Dr., Arlington. Free. 703-228-4403.

ARLINGTON MEDICARE PROGRAM, for Medicare beneficiaries, explores Medicare Part D and prescription drug benefits, question-and-answer session. Sponsored by Arlington Agency on Aging. 10:30 p.m., Carver Senior Center, 1415 S. Queen St.; and 1 p.m., Lee Senior Center, 5722 Lee Hwy. Free. 703-228-1700.

-- Compiled by RIA MANGLAPUS

To Submit an Item

E-mail: alexextra@washpost.com

Fax: 703-518-3001

Mail: Health Calendar, The Washington Post, Alexandria-Arlington Extra, 526 King St., Suite 515, Alexandria, Va. 22314

Details: Notices are accepted on a space-available basis from public and nonprofit organizations only and must be received at least 14 days before the Thursday publication date.