Contraception & Safe Sex

Commonly Asked Questions
Common temporary contraceptive options include hormonal birth control, barrier methods like condoms and diaphragms, the withdrawal method, IUDs, natural family planning and fertility awareness, and implants. Vasectomy and tubal ligation are permanent contraceptive surgeries.
Using condoms can reduce your risk of getting an STI. Vaccines are also available for some STIs, such as hepatitis B and human papillomavirus (HPV). The only 100-percent-effective STI prevention method is not having sex at all.
Emergency contraception involves methods to prevent unwanted pregnancy after unprotected sex, including several pills and the copper IUD. Choosing emergency contraception depends on several factors, including how much time has passed since having unprotected sex and body weight.
Used correctly, external condoms are about 98-percent effective at preventing unplanned pregnancy, while internal condoms are around 95-percent effective. However, not everyone uses condoms correctly, so condom effectiveness is lower in reality.
A primary care physician or ob-gyn can test for STIs, and many areas have clinics that focus solely on STI diagnosis and treatment. Check the CDC website for a list of clinics. At-home STI test kits are also available online.

Kara Smythe, MD
Medical Reviewer
Kara Smythe, MD, has been working in sexual and reproductive health for over 10 years. Dr. Smythe is a board-certified fellow of the American College of Obstetricians and Gynecologists, and her interests include improving maternal health, ensuring access to contraception, and promoting sexual health.
She graduated magna cum laude from Florida International University with a bachelor's degree in biology and earned her medical degree from St. George’s University in Grenada. She completed her residency in obstetrics and gynecology at the SUNY Downstate Medical Center in Brooklyn, New York. She worked in Maine for six years, where she had the privilege of caring for an underserved population.
Smythe is also passionate about the ways that public health policies shape individual health outcomes. She has a master’s degree in population health from University College London and recently completed a social science research methods master's degree at Cardiff University. She is currently working on her PhD in medical sociology. Her research examines people's experiences of accessing, using, and discontinuing long-acting reversible contraception.
When she’s not working, Smythe enjoys dancing, photography, and spending time with her family and her cat, Finnegan.

Kacy Church, MD
Medical Reviewer
Dr. Church always knew that she wanted to pursue endocrinology because the specialty allows for healthy change through patient empowerment. She completed her fellowship in endocrinology, diabetes, and metabolism in 2017 at Stanford University in California.
She loves running, dancing, and watching her sons play sports.

Jennifer Payne, MD
Medical Reviewer
Jennifer Payne, MD, is a physician at Penn Medicine Lancaster General Health.
She earned her bachelor's from the University of St. Thomas, majoring in biochemistry and minoring in theology. She was the first service learning assistant for the service learning program and did extensive volunteer work with Open Arms of Minnesota during this time, including building a library on multiple sclerosis information. She obtained her MD from the Georgetown University School of Medicine, where she was part of the first class to run the Hoya Clinic for people without housing. She also completed an elective in medical writing and editing, working with American Family Physician magazine. Dr. Payne completed her residency in family medicine at Lancaster General Hospital and a primary care sports medicine fellowship at Wellspan Health in York, Pennsylvania.
She has served on the board of the Mid-Atlantic Regional Chapter of the American College of Sports Medicine and assisted in obtaining speakers and clinical case studies for the physician portion of the conference.
She enjoys reading, all sports (particularly Olympic weightlifting), walking her dog, and spending time with her husband, sons, and their extended family.

John Paul McHugh, MD
Medical Reviewer
John Paul McHugh, MD, is an obstetrician-gynecologist and lifestyle medicine specialist in southern California. He has always placed wellness at the center of his work, in both delivering babies and improving practice standards. Dr. McHugh believes that bringing lifestyle medicine to the center of health and wellness empowers patients to make the change they seek and enjoy the benefits of true wellness.
He is a graduate of Harvard Medical School and the Massachusetts Institute of Technology and a fellow of the American College of Lifestyle Medicine. He served as a department chair at Scripps Mercy Hospital in San Diego and is now the chair-elect for the American College of Obstetricians and Gynecologists for California.
He has published several articles in the American Journal of Lifestyle Medicine and served as a peer reviewer for many articles. He contributed to the first textbook of lifestyle medicine in women's health: Improving Women's Health Across the Lifespan.
- Contraception. World Health Organization.
- Sexually Transmitted Infections (STIs). Centers for Disease Control and Prevention. February 27, 2025.
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