PROSTATE AND COLON CANCER SEMINAR: Learn about treatment options and risk factors for colon and prostate cancer during a free seminar today at Medical City Dallas Hospital. The event will feature presentations and a question-and-answer session with a radiation oncologist, a colon-rectal surgeon and a genetic counselor. Registration starts at 6 p.m.; the seminar will be from 6:30 to 8:30 p.m. in CareTower East, second floor, City Hall Conference Center, 7777 Forest Lane. Advance registration recommended. Call 972-566-2333.

FINDING STOMACH RELIEF: Baylor University Medical Center at Dallas will host Heartburn and Acid Reflux: Get the Facts, Thursday from 7 to 9 p.m., with registration beginning at 6:30 p.m., at Hotel Palomar Dallas, 5300 E. Mockingbird Lane. Free. Registration and information: 1-800-422-9567.

LIFEGUARD TRAINING: The Baylor Tom Landry Fitness Center offers American Red Cross Lifeguard Training and CPR certifications through an intensive weekend course. Instruction includes water rescue training, first-aid activities, CPR scenarios and classroom lectures. Participants must be 15 or older and physically able to pass the course prerequisites. Classes are held each weekend through June. Space is limited. Monthly lifeguard and CPR/AED renewal courses are available on weekday evenings. Registration and information: contact Jeremy Post at 214-820-7946 or e-mail, jeremyp@baylorhealth.edu. Cost is $200 for the full training, $100 for recertification and $50 for CPR alone.

HEALING THOUGHTS: "Healing Imagery for Wellness" will be the topic from 6:30 to 8 p.m. April 29 at Gilda's Club North Texas, One Works of Grace Plaza, 2710 Oak Lawn Ave. The session will cover the use of mental imagery to promote well-being and relaxation and to enhance the body's ability to heal. Reply required. Call 214-219-8877.