This test finds breast cancer in its early stages—when it’s most treatable. Here’s what you need to know to get ready.

It’s natural to feel nervous about having a mammogram. But remember, this is something you’re doing to take care of yourself.
What it is
A mammogram is an X-ray of your breasts. It’s used to get a clear picture of your breast tissue to check for any areas of concern. Only 2 to 4 screening mammograms out of every 1,000 lead to a diagnosis of breast cancer.
Who needs it
According to the American Cancer Society, women ages 40 and up need a screening mammogram every year. If your risk of breast cancer is higher, your doctor may recommend you begin testing sooner. Other organizations have different mammogram guidelines. To know what’s right for you, talk to your doctor about your risk and decide together how often and when to schedule mammograms.
Screening vs. diagnostic
A screening mammogram is preventive. It checks for changes in your breasts that could be cancerous. A diagnostic mammogram is used if you have breast symptoms like a lump, or if a change shows up in your screening mammogram.
Before your appointment
First, check that the facility where you’re having your mammogram is certified by the Federal Drug Administration (FDA). Try not to make your appointment for the week before or the week during your period. Your breasts can be more tender and swollen during this time. If you’ve had a mammogram before, but at a different location, call to get copies of the X-rays so the radiologist can compare them to your new ones.
Relax and enjoy the ride
Showing up is the easy part. A colonoscopy is a relatively painless procedure, helped out in part by sedatives and painkillers. “The medication usually helps to relax patients. I also try to talk to my patients to alleviate their anxiety. Comfort is key,” says Ganjhu.
Getting ready
On the day of your exam, don’t wear any deodorant, powder or lotion under your arms, or on or around your breasts. These can show up on your X-ray and make it harder to get a clear picture of your breasts. Tell your mammogram technician about any breast symptoms you’re having so she can pay close attention to those areas. Also, tell your technician if you have breast implants.