homehome Home chatchat Notifications


Men can reduce bowel cancer risk by eating a plant-based diet

Add this to the list of reasons to eat more plants.

Fermin Koop
November 29, 2022 @ 10:39 pm

share Share

If you aren’t eating less meat to reduce your carbon footprint, you might consider doing it just for your health. A large study found that eating a plant-based diet packed with vegetables, whole grains, nuts and legumes can reduce the risk of bowel cancer in men by over a fifth – in line with previous studies pointing in the same direction.

Image credit: Wikipedia Commons.

Bowel cancer is the third most common cancer worldwide, and while screening and treatment have improved, preventive strategies to lower the risk remain a priority. Diet is an important modifiable risk factor. Red and processed meats are linked with a higher risk of cancer, while foods rich in fiber are associated with a decreased risk. But the specifics of how individual cancers are affected by diet patterns are still poorly understood.

This is where the new study comes in.

The study, involving almost 80,000 men and over 93,000 women, found that men who ate the largest amounts of healthy plant-based foods had a 22% lower risk of bowel cancer compared to those who ate the least. No such link was found in women, which the researchers explained by women being less at risk for this type of cancer.

“In our study population, women consumed greater amounts of healthy plant foods and fewer amounts of unhealthy plant foods compared to men, and they might not have further benefits with higher scores of plant-based diet indices. In addition, men are at higher risk for colorectal cancer than women in general,” the researchers wrote in their paper.

Diets and healthy habits

For the study, participants were asked about the frequency with which they ate certain foods and drinks out of a list of 180 items. They were also asked about the size of the portions. They could say they consumed each food item “never or hardly ever” up to “two or more times a day,” while for drinks options reached up to “four or more times a day.”

The food and drink items in the list were classified into three groups, based on how “good” they are: healthy plant foods (vegetables, whole grains, nuts, legumes such as lentils, tea, and coffee), less healthy plant foods (refined grains, fruit juices, potatoes, and added sugars) and animal foods (dairy, eggs, animal fat, fish or seafood, and meat)

The researchers believe the antioxidant and anti-inflammatory features of fruits, vegetables, and whole grains in a plant-based diet could be the reason behind the lower cancer risk. Dietary fiber leads to the production of fatty acids through microbial fermentation, which reduces inflammation and carcinogenesis, they explained, while meat can have exactly the opposite effect.

“Although previous research has suggested that plant-based diets may play a role in preventing colorectal cancer, the impact of plant foods’ nutritional quality on this association has been unclear,” Jihye Kim, corresponding author, said in a statement. “Our findings suggest eating a healthy plant-based diet is linked with a reduced risk of colorectal cancer.

The researchers cautioned that this is still an observational study that established a correlation, and there’s no clear causation demonstrated between the link between plant-based food and bowel cancer. The researchers call for more research to be done in the same field, hoping to better understand the role of diets in the fight against cancer.

The study was published in the journal BMC Medicine.

share Share

These researchers counted the trees in China using lasers

The answer is 142 billion. Plus or minus a few, of course.

New Diagnostic Breakthrough Identifies Bacteria With Almost 100% Precision in Hours, Not Days

A new method identifies deadly pathogens with nearly perfect accuracy in just three hours.

This Tamagotchi Vape Dies If You Don’t Keep Puffing

Yes. You read that correctly. The Stupid Hackathon is an event like no other.

Wild Chimps Build Flexible Tools with Impressive Engineering Skills

Chimpanzees select and engineer tools with surprising mechanical precision to extract termites.

Archaeologists in Egypt discovered a 3,600-Year-Old pharaoh. But we have no idea who he is

An ancient royal tomb deep beneath the Egyptian desert reveals more questions than answers.

Researchers create a new type of "time crystal" inside a diamond

“It’s an entirely new phase of matter.”

Strong Arguments Matter More Than Grammar in English Essays as a Second Language

Grammar takes a backseat to argumentation, a new study from Japan suggests.

A New Study Reveals AI Is Hiding Its True Intent and It's Getting Better At It

The more you try to get AI to talk about what it's doing, the sneakier it gets.

Cat Owners Wanted for Science: Help Crack the Genetic Code of Felines

Cats are beloved family members in tens of millions of households, but we know surprisingly little about their genes.

The World's Smallest Microcontroller Could Reshape the Future of Wearable Tech and Medicine

This speck-sized chip could be incorporated in anything from smart pills to environmental sensors.