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Fact Finder Tool

Discover insights, research, and information to help you navigate cancer-related topics with confidence.

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CLAIM: Hormone replacement therapy (HRT) causes cancer

Medical Issue or Treatment
Definitely or most likely true

What you may have heard Women who take hormone replacement therapy have a higher risk of developing breast cancer. What science tells us There are various types of hormone replacement therapy (HRT), including estrogen only, estrogen + progestin (combined), or bioidentical hormone replacement therapies. Estrogen While hormone replacement therapy with estrogen alone improves symptoms of…

Older woman touching a patch on her arm

CLAIM: Lack of sleep increases your risk of cancer

Lifestyle Medical Issue or Treatment
Definitely or most likely true

What you may have heard A disrupted sleep cycle reduces our body’s ability to function properly and decreases its ability to ward off cancer (Shafi et al.). What science tells us The World Health Organization (WHO) states that circadian disruption alone is a risk factor for cancer.“Circadian disruption” is defined as any change in sleep…

Person lying awake in bed in darkened room
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