Why do some people who eat healthy and exercise regularly still get colon cancer?

The rise in colorectal cancer cases among young people has experts baffled, but a recent study has shed some light on the mystery.

Strangely, even people who exercise daily and eat healthy get cancer.

The growing number of people under 50 developing colorectal cancer has alarmed the medical community and left many wondering why this is happening.

Not only that, more young people are dying from the disease. The American Cancer Society reports that people born in the 1990s are twice as likely to develop colon cancer and four times as likely to develop rectal cancer as those born in the 1950s.

Normally, drinking alcohol, smoking and obesity are the main causes of cancer. But strangely, even people who exercise daily and eat healthily can get this type of cancer, according to the Mirror .

Now, doctors at Georgetown University, in Washington DC (USA), say the gut microbiome - the collection of microorganisms, such as bacteria, fungi and viruses that naturally live in the human body - may play a role in this.

What did the study find?

The authors studied tissue samples from 63 patients under 45 years of age or over 65 years of age.

They found that tumors from younger patients were more likely to contain the fungus Cladosporium sp. than those from older patients.

Dr Benjamin Weinberg, a specialist in gastrointestinal cancers, said: “A lot of people blame obesity and diabetes. But we see patients who run every day and eat healthily but still have advanced colorectal cancer, according to the Mirror .

Now, US scientists say the gut microbiome may play a role in this.

Apparently, changes in the gut microbiota may increase the rate of colorectal cancer in people under 50 years of age.

Studies have shown that diet, obesity, exercise, and certain medications (such as antibiotics) can all change the amount and type of bacteria in the gut.

Tumors in young adults have more Cladosporium sp.

They looked at the DNA of microorganisms in the tumors and found that the fungus Cladosporium sp. was more common in younger people.

Scientists are still unsure why Cladosporium sp. is mutating in these cases, but they believe it may damage the cells' DNA, turning them into cancer cells, according to the Mirror .

It's still unclear why younger people's tumors have more Cladosporium sp. in them. Dr. Weinberg said something was causing the increase, and "we don't know why yet."

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