Green circle with question mark inside Most likely or definitely true

Red circle with X insideFalse/misinformation

Gray circle with question mark insideWe’re not sure yet

Change or refine your search

Hormone replacement therapy (HRT)

Hormone replacement therapy causes cancer

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), […]


Lead exposure causes cancer

What you may have heard

Exposure to lead causes cancer.

What science tells us

Lead is harmful, regardless of the type of lead exposure (breathing in, swallowing, or absorbing through the skin), but the body absorbs the highest levels of lead when […]

2022-08-25T14:50:49+00:00Categories: Occupational & environmental exposure|Tags: |

Tobacco use

Tobacco use causes cancer

What you may have heard

Tobacco use is a leading cause of cancer and cancer death. It is also the biggest preventable cause of cancer.

What science tells us

All tobacco products, including cigarettes, cigars, pipe tobacco, chewing tobacco, and snuff contain […]


Stress increases cancer risk

What science tells us

Short-term or acute stress, such as stress you might feel before giving a speech, tends to go away soon after the stressful event. Long-term or chronic stress, however, is more damaging.

Chronic stress can weaken your immune system and increase your […]

2022-04-08T17:26:26+00:00Categories: Lifestyle|Tags: , |


Obesity causes cancer

What you may have heard

Obesity has been linked to various types of cancers.

What science tells us

Obesity or high body mass index (BMI) is a condition in which a person has an unhealthy amount and/or distribution of body fat. To measure […]

Low physical activity

Low levels of physical activity increase cancer risk

What you may have heard

Low physical activity increases risk of developing cancer.

What science tells us

Epidemiological Evidence

There is strong evidence that higher levels of physical activity are linked to lower risk of several types of cancer. Much […]

Go to Top