What Is Prostate Cancer?
A plain-language look at prostate cancer, why it often grows slowly, and what screening involves, based on National Cancer Institute resources.
Source: National Cancer Institute · Verified 2026-07-02
The 30-second version
Prostate cancer is the most common cancer among men in the United States and the second leading cause of cancer death among men. It usually grows very slowly. Because of this, finding and treating it early does not always help a man live longer or feel better.
Key takeaways
- Prostate cancer is the most common cancer among men in the United States.
- It is the second leading cause of cancer death among men in the United States.
- Prostate cancer usually grows very slowly.
- Finding and treating it before symptoms appear may not always improve health or help a man live longer.
- A test called the prostate-specific antigen (PSA) test is one tool related to prostate cancer screening.
Choose how you want to understand this
The full explanation.
The simple version
The prostate is a part of the male body. When cancer forms there, it is called prostate cancer.
Prostate cancer is the most common cancer among men in the United States. It is also the second leading cause of cancer death among men in the country. That may sound alarming, but there is an important detail that changes the picture: prostate cancer usually grows very slowly.
Prostate cancer is common, but it often grows slowly.
Why slow growth matters
Because prostate cancer usually grows very slowly, it does not always behave the way people expect cancer to behave. With many health problems, finding them early and treating them right away helps a person feel better or live longer. Prostate cancer can be different.
Finding and treating prostate cancer before symptoms appear may not always improve a man's health or help him live longer. In other words, catching it early is not always a clear benefit. Whether screening and treatment are helpful depends on the person, and it is a decision to make with a healthcare team.
Screening and prostate changes
Screening means checking for a disease in people who do not have symptoms. A test called the prostate-specific antigen (PSA) test is one tool related to prostate cancer screening.
Because the benefits of screening are not the same for everyone, it helps to talk with a healthcare team about whether screening is right for you. Your team can also help you learn about prostate changes and conditions in general, so you understand what is normal and what to ask about.
Screening decisions are personal — a healthcare team can help you weigh them.
What you can do
If you have questions about your own risk or about screening, the best step is to talk with your healthcare team. They can help you understand the choices, the possible benefits, and the possible downsides for your situation. Learning about prostate cancer, prevention, and screening can help you take part in those conversations with confidence.
Watch instead
Animated lessons are in production. Here’s the planned video slate for this topic — each one will be based on the same NCI-sourced explanation you’re reading.
What Is Prostate Cancer: the quick overview
A one-breath explanation you can watch before an appointment.
Coming soonWhat Is Prostate Cancer, explained simply
The core ideas with friendly animation and plain language.
Coming soonUnderstanding what is prostate cancer — full lesson
A deeper walkthrough covering the key takeaways and common questions.
Coming soonVideo transcript▾
A full, readable transcript will appear here when the video is published — so the lesson is accessible whether you prefer to watch, listen, or read. For now, the article above is the complete text version.
Suggested animation storyboard▾
- 1Open on a calm title card: "What Is Prostate Cancer?" with the Cancer Explained mark.
- 2Narrator reads the 30-second summary while a soft animated diagram builds on screen: "Prostate cancer is the most common cancer among men in the United States and the second leading cause of cancer death among men. It usually grows very slowly. Because of this, finding and treating it early does not always help a man live longer or feel better."
- 3Scene 2: illustrate the idea — "Prostate cancer is the most common cancer among men in the United States."
- 4Scene 3: illustrate the idea — "It is the second leading cause of cancer death among men in the United States."
- 5Scene 4: illustrate the idea — "Prostate cancer usually grows very slowly."
- 6Close on a reminder card: this is educational only; talk with your healthcare team, and a link to the NCI source.
Words to know
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Quick knowledge check
According to this article, how common is prostate cancer among men in the United States?
Frequently asked questions
▸Is prostate cancer common?
Yes. Prostate cancer is the most common cancer among men in the United States. It is also the second leading cause of cancer death among men in the country.
▸Does prostate cancer grow slowly?
Usually, yes. Prostate cancer typically grows very slowly. Because it often grows so slowly, finding and treating it before symptoms appear may not always improve a man's health or help him live longer.
▸Is there a screening test for prostate cancer?
A test called the prostate-specific antigen (PSA) test is one tool related to prostate cancer screening. Your healthcare team can explain what screening options may make sense for you.
▸Does finding prostate cancer early always help?
Not always. Because prostate cancer usually grows very slowly, finding and treating it before symptoms occur may not improve a man's health or help him live longer. This is something to discuss with a healthcare team.
Test your understanding
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Questions to ask your healthcare team
Consider bringing these questions to your next appointment.
- Am I at higher risk for prostate cancer than most men?
- What are the benefits and downsides of prostate cancer screening for me?
- What does the PSA test involve, and is it right for my situation?
- If prostate cancer is found, does it always need to be treated right away?
- What signs or symptoms should I watch for and report to you?
- Where can I find trustworthy information about prostate changes and conditions?
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