--- description: Breast cancer is the most prevalent cancer in the U.S. These six lifestyle habits may reduce your risk of getting breast cancer. title: These 6 Habits May Reduce Your Risk of Breast Cancer image: https://static.time.com/v3/assets/bltea6093859af6183b/blte6ea9786d8256b23/6988d473cf40a8652fc48699/time-magazine-exercise-fitness-health-bethan-mooney-42.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 ---  * [Health](/section/health/) ## Health Update your preferences in [Account Settings](/account/preferences/) Close # These 6 Habits May Reduce Your Risk of Breast Cancer  by [Jamie Ducharme](/author/jamie-ducharme/)  ## Jamie Ducharme Update your preferences in [Account Settings](/account/preferences/) Close Ducharme is a contributor to TIME. Oct 1, 2018 4:41 PM CUT  Bethan Mooney for TIME  by [Jamie Ducharme](/author/jamie-ducharme/)  ## Jamie Ducharme Update your preferences in [Account Settings](/account/preferences/) Close Ducharme is a contributor to TIME. Oct 1, 2018 4:41 PM CUT Breast cancer is the most prevalent cancer in the U.S., affecting almost 85 of every 100,000 Americans, according to [recent data](http://gco.iarc.fr/today/online-analysis-map?v=2018&mode=population&mode%5Fpopulation=continents&population=900&populations=900&key=asr&sex=0&cancer=39&type=0&statistic=5&prevalence=0&population%5Fgroup=0&ages%5Fgroup%5B%5D=0&ages%5Fgroup%5B%5D=17&nb%5Fitems=5&group%5Fcancer=1&include%5Fnmsc=1&include%5Fnmsc%5Fother=1&projection=natural-earth&color%5Fpalette=default&map%5Fscale=quantile&map%5Fnb%5Fcolors=5&continent=0&rotate=%255B10%252C0%255D "undefined") from the World Health Organization’s International Agency for Research on Cancer (IARC). Around the globe, 627,000 people are [projected to die from breast cancer](http://time.com/5396246/global-cancer-burden/ "undefined") this year alone. The silver lining is that with [early detection](http://time.com/4629245/who-needs-a-mammogram-for-breast-cancer-guidelines/ "undefined") and proper care, breast cancer is among the most treatable forms of the disease. In the U.S., [breast cancer deaths dropped by 40%](http://time.com/4967148/breast-cancer-death-rates/ "undefined") between 1989 and 2015, thanks to better screening and access to care — but a large body of research suggests that widespread adoption of certain lifestyle choices could reduce that number even further. While there’s no single or definitive way to prevent cancer, here’s what science says may reduce risk for developing breast cancer. ## Limit alcohol consumption Regularly drinking alcohol is associated with [at least seven different kinds of cancer](http://time.com/5015058/alcohol-cancer-risk/ "undefined"), and the [link between booze and breast cancer](http://time.com/4760290/alcohol-breast-cancer/ "undefined") is particularly strong, perhaps because alcohol can increase estrogen levels to a potentially dangerous degree. [Federal dietary guidelines](https://health.gov/dietaryguidelines/2015/guidelines/appendix-9/ "undefined") recommend drinking only in moderation, defined as up to a drink per day for women or two per day for men; drinking at this level, many experts say, likely does not harm health, and [may confer some benefits](http://time.com/5166514/moderate-drinking-live-longer-study/ "undefined"). But most of the possible health benefits of drinking appear to be related the heart, and [one 2015 study](http://time.com/4002182/drinking-alcohol-cancer/ "undefined") published in _the BMJ_ found that even one drink a day may raise a woman’s risks of developing cancer, particularly breast cancer, by up to 13%. Accumulating evidence about these risks and others even recently led some researchers, writing in _the Lancet_, [to urge people not to drink any alcohol](http://time.com/5376552/how-much-alcohol-to-drink-study/ "undefined"). ## Exercise Exercise is beneficial for many reasons, ranging from better [cardiovascular health](http://time.com/5285426/exercise-heart-health-aging/ "undefined") to [improved mood](http://time.com/4779638/exercise-depression-mood/ "undefined"). Research also shows that regular physical activity may lower a person’s risk of developing breast cancer, and it likely does so for a variety of reasons. Exercise can reduce [inflammation](http://time.com/5235368/what-is-inflammation/ "undefined"), improve the [immune system](http://time.com/5313656/best-foods-for-immune-system/ "undefined") and lead to a drop in body fat, which is associated with a lower breast cancer risk. About 300 minutes of physical activity per week is ideal for breast cancer prevention, researchers found in [a 2015 _JAMA Oncology_ study](http://time.com/3960035/exercise-breast-cancer/ "undefined"). Similarly, [other research has suggested](http://time.com/4970989/obesity-overweight-cancer/ "undefined") that up to 40% of cancers are related to being overweight or obese, which an exercise regimen can help prevent. ## Eat a fiber-filled diet Fiber — the part of plant-based foods that your body cannot absorb and digest — helps with everything from digestion to cholesterol and weight management. And a [2016 study](http://time.com/4326798/breast-cancer-diet-teen-girls-fruit/ "undefined") published in _the BMJ_ found that women who said they ate about three daily servings of fiber-filled fruit when they were teenagers had a 25% lower chance of developing breast cancer as adults, compared to those who said they ate less fruit. ## Limit fat intake Fat is a hotly contested nutrient. Recent research suggests that eating full-fat dairy may [increase longevity](http://time.com/5391756/dairy-whole-fat-milk-yogurt/ "undefined") and reduce the risks of developing [Type 2 diabetes and obesity](http://time.com/collection/guide-to-weight-loss/4279538/low-fat-milk-vs-whole-milk/ "undefined"). But, on the other hand, [a study](http://time.com/5289246/low-fat-diet-breast-cancer/ "undefined") published in _JAMA Oncology_ in May found that women who followed low-fat diets that were also rich in produce and whole grains had a 22% lower risk of dying of breast cancer during more than eight years of follow-up, compared to women who did not adjust their fat intake. The study couldn’t tease out exactly why a low-fat diet was linked to a lower cancer risk, however, and the authors noted that women on this eating plan also tended to lose more weight and report higher overall nutrient intake. ## Don’t smoke Smoking is typically associated with lung cancer, but some research suggests that carcinogens in cigarettes may also increase a person’s risk of developing other types of the disease, including breast cancer. [One study](https://breast-cancer-research.biomedcentral.com/articles/10.1186/s13058-017-0908-4 "undefined"), published in the journal _Breast Cancer Research_ in 2017, suggested that this risk may be particularly strong for people who start smoking early in life, potentially because of the way cigarettes affect hormonal pathways during breast development. ## Think carefully about hormone replacement therapy A 2016 [_JAMA Oncology_ study](http://time.com/4349231/here-are-the-things-women-can-do-to-avoid-breast-cancer/ "undefined") found that even women with a genetic risk of breast cancer may be able to reduce their odds of getting the disease by adopting a number of the habits listed here, like limiting alcohol and cigarettes, and keeping body weight down. Among those lifestyle choices: avoiding hormone replacement therapy for menopause**.** Hormone replacement therapy replaces flagging levels of hormones such as estrogen and progesterone, and it can ease symptoms of menopause, including hot flashes and fatigue. But [research has also found](https://www.cancer.org/cancer/cancer-causes/medical-treatments/menopausal-hormone-replacement-therapy-and-cancer-risk.html "undefined") that it can increase breast cancer risk, leading many doctors to believe that the risks outweigh the benefits for many women. 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