The 6 Most Common Myths About Cancer

TL;DR

Clearing up misconceptions about cancer, including whether sharks get cancer, the impact of sugar and superfoods on cancer, and the truth about cancer rates.

Transcript

Here at SciShow, we know how to stay on top of the truth. So when there are misconceptions about science -- especially ones that seem plausible -- we try to help clear things up. And one topic that generates a lot of myths is … cancer. We’re not talking conspiracy theories here -- we’re going to focus on things that sound like they could be true, a... Read More

Key Insights

• 🥺 Misinterpretation of scientific studies can lead to myths and misconceptions about cancer.
• 🧑‍🤝‍🧑 Cancer is not exclusive to modern times and has been found in human remains dating back thousands of years.
• 🌐 The global burden of cancer is shifting from developed to developing nations.

Questions & Answers

Q: Why do people believe that sharks don't get cancer?

The myth originated from misinterpreted studies in the 70s, but subsequent research has shown that sharks can develop tumors.

Q: Is it true that cancer cells thrive on sugar?

While cancer cells do rely on sugar for energy, restricting sugar intake doesn't significantly impact the glucose available to cancer cells.

Q: Do antioxidant supplements help prevent cancer?

Scientific studies have shown that antioxidant supplements, such as vitamins A and E, do not lower the risk of cancer and may even accelerate its progression.

Q: Is there a risk of cancer spreading during a biopsy?

While there is a slight risk of tumor cells getting displaced during a biopsy, the risk is minimal and can be managed with techniques such as using biopsy needles with vacuums.

Summary & Key Takeaways

• Sharks do get cancer, contrary to the myth that they are immune.

• Eating sugar does not directly affect the glucose available to cancer cells.

• Antioxidant supplements do not lower the risk of cancer and may even speed up cancer progression.

• Biopsies have a very small risk of spreading tumor cells and provide valuable information for doctors.