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SpeakBase Times·Science·
Ozempic Effect: Women on Weight-Loss Drugs Had 30 Percent Lower Breast Cancer Risk in Study of 111,000
A study of 111,646 women published in JCO Oncology Practice and presented at the 2026 ASCO Annual Meeting found that those taking GLP-1 drugs such as Ozempic and Wegovy were about 30 percent less likely to develop breast cancer. The research drew on electronic health records from the Penn Medicine system, covering women aged 45 to 80 with a body mass index of 25 or higher. Scientists call the findings hypothesis-generating and say clinical trials are now needed to investigate GLP-1 drugs as a breast cancer prevention strategy.
By SpeakBase Times Editorial Team
Level 1 - Absolute Beginner
Ready
Reading PassageTap highlighted words for definitions
Scientists did a big study about medicines called GLP-1 drugs. Famous examples are Ozempic and Wegovy. Many people take these medicines to lose weight.
The scientists looked at health records from over 111,000 women. The women were between 45 and 80 years old. Some women took GLP-1 medicines and some did not.
The scientists found something surprising. Women who took GLP-1 medicines got breast cancer much less often. They were about 30 percent less likely to get breast cancer.
The scientists say we need more studies to be sure. This study only looked at health records. We need special tests called clinical trials to know if these medicines can really prevent breast cancer.
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Key Vocabularymedicine —a substance taken to treat or prevent illness
weight loss —the process of reducing body weight, often through diet, exercise, or medication
study —a careful scientific examination of data or people to learn something new
cancer —a serious disease where cells in the body grow out of control
risk —the chance or possibility that something harmful will happen
percent —a part of something expressed as how many out of every 100
clinical trial —a carefully controlled test in which a medicine or treatment is given to patients to see if it works and is safe
prevention —action taken to stop something harmful from happening
Exercises
Multiple Choice
1What are Ozempic and Wegovy?
2How many women were included in the study?
3How much less likely were GLP-1 users to get breast cancer?
4What kind of records did scientists look at?
5What do scientists say is needed to be more certain about the results?
True or False
6GLP-1 drugs like Ozempic are taken to help people lose weight.
7The study found GLP-1 users were more likely to get breast cancer.
8Scientists looked at records from women between 45 and 80 years old.
9Scientists say the study results are already 100 percent certain.
10Clinical trials are needed to confirm whether GLP-1 drugs can prevent breast cancer.
Fill in the Blank
11Ozempic and Wegovy are examples of ___ drugs.
12Women on GLP-1 drugs were about ___ percent less likely to get breast cancer.
13Scientists say we need ___ trials to confirm the results.