ABC News’ Dr. Jen Ashton talks about the drop in screening age and what women should know.

The new guidance comes on the heels of mounting evidence showing higher rates of breast cancer among women in their 40s.

Olivia Munn opened up about how boyfriend John Mulaney and their son Malcolm have supported her amid her cancer battle.

The actress shared details about her yearlong battle in a new interview with People magazine, saying "it was a lot tougher" than she expected.

A new CDC report published on Tuesday found that about one-third of socially vulnerable women were not receiving recommended mammograms.

A new study has shown that altering the treatment for breast cancer patients may lower the need for multiple surgeries.

ABC News' Dr. Darien Sutton breaks down promising new breast cancer research from Memorial Sloan Kettering Cancer Center about using ice to shrink tumors in breast cancer patients.

The co-anchor of "SportsCenter," who is now cancer-free, revealed publicly for the first time that she was diagnosed with breast cancer in January.

Former "Baywatch" star Nicole Eggert debuted her new look as she continues to share her cancer journey on social media.

Dr. Jen Ashton breaks down the GAIL Model, which Munn credited in part with saving her life.

The actress opened up about a nearly year-long private battle with breast cancer.

The actress shared her yearlong private battle with breast cancer, revealing she underwent four surgeries, including a double mastectomy, since her diagnosis.

Oliva Munn revealed her breast cancer diagnosis and that she has undergone four surgeries, including a double mastectomy.

Early detection of breast cancer is critical for overall survival rates. A new breast imaging technology shows promising preliminary results in detecting breast cancer. Dr. Jen Ashton explains.

A simulation-based study reports a 58% reduction in breast cancer deaths from 1975 to 2019. ABC News chief medical correspondent Dr. Jen Ashton explains why.

The "Baywatch" and "Charles in Charge" star opened up to People magazine about why she initially brushed off her symptoms.

Former 'Baywatch' star Nicole Eggert, 51, said she gained 25 pounds and had "terrible pain" prior to her breast cancer diagnosis.

The vaccine could be available in five years if studies go well.

ABC News’ Dr. Jennifer Ashton explains a new breast cancer trial out of the Cleveland Clinic that shows promising phase one results.

The "Beverly Hills, 90210" star discusses her journey with stage 4 breast cancer and her new podcast.

Shannen Doherty recently shared an update on her stage 4 breast cancer, saying she isn't giving up the fight.

GMA Lifestyle contributor Lori Bergamotto showcases products that give back to an amazing cause.

Paula Flory founded Move Over Breast Cancer, which provides free, non-clinical support to breast cancer patients, after being diagnosed with stage three breast cancer in 2011.

Women have formed a sisterhood to discuss treatment and are thriving after battling the disease.

For Men's Breast Cancer Awareness Week, two men open up about their journey after receiving their diagnosis.

Dr. Elizabeth Comen, an oncologist at Memorial Sloan Kettering Cancer Center, discusses what men need to know about breast cancer.

Sally Joy Wolf was diagnosed with early stage 2 breast cancer at 40, which later spread to her hip.

ABC News' Erielle Reshef breaks down how to find breast cancers that are not always easily identifiable.

Dr. Elizabeth Comen, oncologist as Memorial Sloan Kettering Cancer Center, talks through what to expect at a first mammogram.

Country star Mackenzie Porter and ABC News contributor Dr. Alok Patel talk about the importance of getting early screening for breast cancer with genetic risks.

Broadway actress Sarrah Strimel Bentley opens up about her journey of battling breast cancer, and teams up with sponsor Eli Lilly and Company.

While the physical toll of cancer is apparent, “GMA” examines the less-obvious financial toll of the disease.

Kate Korson was diagnosed with stage 3, triple-negative breast cancer.

October is breast cancer awareness month and Dr. Darien Sutton shares what you need to know about prevention, treatment, and how you can help.

Markeeta Morrow and Lauren Dages found each other during treatment of triple-negative breast cancer and are encouraging others to do self-exams and get screened early.

Kate Korson was diagnosed with an incredibly rare form of breast cancer just before she turned 34 and now works to raise awareness about getting screened early.

Kate Korson's friends and family will attend the Phillies playoff game this week.

One woman shares her story of turning to surrogacy after her breast cancer diagnosis and awaiting the birth of her child.

Dr. Ami Shah and Dr. Erica Stringer-Reasor discuss the state of the battle against breast cancer, including the importance of getting screened, racial disparities and new treatment options.

Sarrah Strimel Bentley opens up about getting diagnosed with breast cancer and how it impacted her fertility and dreams of starting a family.

Researchers found that there were fewer deaths in areas with higher mammogram screenings and obesity levels were linked to more deaths.

The study found women are 66% less likely to die from breast cancer than they were 20 years ago.

The former "Beverly Hills, 90210" star gave her Instagram followers a sobering look at her ongoing battle with stage 4 breast cancer.

Shannen Doherty opened up about feeling "fear" and "turmoil" while giving a sobering update on her cancer treatments.

New research found the medication, marketed under the name Kisqali, can lower chances of recurrence for many of those diagnosed with earlier stages of breast cancer.

Kisqali is already FDA approved, but the new data means it could be used in a broader range of patients.

Beth Fairchild, 40, is a mom and grandma from Greensboro, North Carolina who gives back to cancer patients through her work on areola restoration and involvement of metastatic breast cancer awareness.

Technology still being developed in order to use AI to potentially find new ways to analyze, detect and treat the spread of breast cancer.

Most women should start screening for breast cancer at age 40, and they should get screened every other year through age 74, according to new draft guidance.

The U.S. Preventive Services Task Force's draft guidance drops the recommended age from 50 amid mounting evidence showing higher rates of breast cancer among women in their 40s.