Illnesses and conditions

75% of stomach cancer cases could be prevented with a simple treatment

75% of stomach cancer cases could be prevented with a simple treatment
Millions of today's youth are expected to develop stomach cancer
Millions of today's youth are expected to develop stomach cancer
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Millions of today's youth are expected to develop stomach cancer
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Millions of today's youth are expected to develop stomach cancer

Globally, stomach cancer is on the rise in young people, but new research shows that three-quarters of future cases could be prevented by screening for and treating a common bacterial infection: Helicobacter pylori.

Chronic infection with the bacteria Helicobacter pylori is the strongest known risk factor for gastric, or stomach, cancer. Importantly, it’s a preventable risk factor, treatable using a combination of antibiotics and proton pump inhibitors (PPIs), which reduce the amount of acid produced in the stomach.

Regardless of its preventability, there has been an alarming rise in stomach cancer in people under 50. Now, research led by the International Agency for Research on Cancer (IARC), the specialized cancer agency of the World Health Organization (WHO), has projected the future incidence of stomach cancer, including cases attributable to H. pylori infections, among people born between 2008 and 2017.

The researchers first used large-scale modeling to estimate the future burden of stomach cancer, assuming there were no changes in current prevention or treatment strategies. Then they estimated how many of those cases are linked to H. pylori. National, age-specific incidence rates were pulled from GLOBOCAN 2022, a global cancer statistics database, with mortality projections coming from the United Nations. The simulation model estimated how many people will develop cancer during their lifetime based on how often the cancer occurs at different ages, how likely people are to die before they can develop cancer, and demographic trends like population growth and aging.

If current treatment practices were to continue unchanged, based on these simulations, it’s expected that during the lifetime of all men and women born between 2008 and 2017, there will be 15.6 million new gastric cancer cases globally. Of those cases, 76% – or three-quarters – are attributable to infection with H. pylori and are therefore potentially preventable. Asia is projected to bear the highest burden, with 10.6 million cases, followed by the Americas (2 million) and Africa (1.7 million cases).

A 100% effective H. pylori screening and treatment program could reduce cases by up to 75%. Even programs that are 80% to 90% effective would still prevent between 60% and 68% of stomach cancer cases. These strategies are cost-effective, the researchers said, even in lower-income settings, and comparable to vaccination campaigns for human papillomavirus (HPV) or hepatitis B.

“A shift in focus toward the life course of today’s young people and their prospects of developing gastric cancer, with or without interventions, underscores the need for greater investment in gastric cancer prevention, including the implementation of population-based H. pylori screen-and-treat strategies,” said the researchers.

The study had limitations. Many lower-income countries lack reliable cancer registries, especially in Africa, leading to possible underestimation, and some data for stomach cancer location (upper versus lower stomach) were incomplete or imprecise. As has been mentioned, the simulation model assumed no change in cancer incidence rates or screen practices over time, and it also assumed that the prevalence of H. pylori remained constant.

The findings suggest that the majority of future stomach cancer cases are preventable with better public health action. Eradicating H. pylori is a proven, affordable strategy that should be prioritized, according to the researchers. Programs can be tailored for high-, middle- and low-income countries. For example, endoscopy-based screening and insurance-supported treatment for the former; population-level screening and early treatment for the latter. The researchers also note the importance of investing in developing an H. pylori vaccine.

This study sends a clear message: stomach cancer remains a significant global health threat, particularly for today’s youth. But with targeted, evidence-based interventions like screening for and treating H. pylori, millions of lives could be saved.

The study was published in the journal Nature Medicine.

Source: IARC/WHO

6 comments
6 comments
bwklast1
This study sends a clear message
"Programs can be tailored for high-, middle- and low-income countries. For example, endoscopy-based screening and insurance-supported treatment for the former; population-level screening and early treatment for the latter.
You call that clear?
anthony88
I'm surprised that straight after Marshall and Warren got a Nobel Prize for discovering the role of Hp in all of this - and especially since it's presence can be detected in some pretty simple tests - that this kind of program wasn't immediately rolled out 20 years ago.
SuziJet
The bacteria connected to cancer has also been linked to stomach ulcers. In the case of stomach ulcers the simple cure is cayenne pepper in capsules. Taking it in the form of capsules gets it past the mouth where the burning takes place. When in the stomach it kills the Hp bacteria allowing the ulcer to heal. The standard treatment of an antibiotic and acid reducing medicine screws with the ability to digest food. Cayenne pepper is not patent able, cheap and it allows the body to heal. So if killing the Hp bacteria prevents the cancer, include cayenne pepper capsules as a regular part of your life.
Christian
back in the day, before H Pylori was discovered, it was a common practice for patients with severe stomach ulcers to surgically pinch off the ulcered part of the stomach, stitch it shut, kinda like modern weight loss surgeries. Unfortunately, most of those who had that treatment eventually died of stomach cancer, decades later. Crazy how much the study of antibiotics has changed things.
Also, crazy story, the guy that discovered H Pylori proved that it caused ulcers by infecting himself with the bacteria, getting diagnosed with ulcers after, and then curing it with antibiotics. Got the nobel prize for it. Nasty bug. Props to the dude who made himself the case study to prove it.
NMorris
@suzijet, any link to evidence of cayenne being effective?
Interesting to ask where/how these people contracted their Hp infection. Is breaking the transmission cycle th emost effective path forward`?
Kpar
Geez, H pylori has been know as the PRIMARY contributor for stomach ulcers for decades- I remember reading about it when I was in my twenties, and I am now 73. And ulcers come before cancer.