Peanuts are one of the world’s most popular snacks. They are rich in protein, healthy fats, fiber, vitamins, and minerals, and many people enjoy them as part of a balanced diet.
For most healthy people, peanuts can be a nutritious food that supports heart health and provides lasting energy. However, a new study from researchers at the University of Liverpool suggests that people who have cancer may need to be more careful.
The findings do not prove that peanuts cause cancer or make cancer worse, but they do raise important questions about whether a protein found in peanuts could help cancer spread in some patients.
Cancer becomes much more dangerous when it spreads from its original location to other parts of the body. This process is called metastasis. Instead of staying in one place, cancer cells can break away from the original tumor, enter the bloodstream, travel through the body, and form new tumors in different organs.
Preventing this spread is one of the main goals of cancer treatment because metastatic cancer is often much harder to treat.
The researchers focused on a natural protein found in peanuts called Peanut agglutinin, or PNA. Earlier studies showed that after people eat peanuts, small amounts of this protein can enter the bloodstream.
In the new study, the scientists discovered that PNA can trigger the body to release signaling chemicals called cytokines, including IL-6 and MCP-1. These chemicals help cells communicate with one another and play important roles in inflammation and the immune system.
The team found that higher levels of these cytokines changed the lining of blood vessels in a way that made it easier for cancer cells to attach to them. If cancer cells stick more easily to blood vessel walls, they may have a better chance of leaving the bloodstream and forming new tumors elsewhere in the body.
This finding suggests one possible way that PNA might increase the risk of cancer spreading, although much more research is needed to confirm whether this happens in patients.
This is not the first time the Liverpool research team has investigated PNA. In earlier work, they found that the protein acts a bit like Velcro. It can attach to certain sugar molecules that are commonly found on cancer cells and pre-cancerous cells.
This stickiness may allow cancer cells to clump together, helping them survive while traveling through the bloodstream. Combined with the new findings, the research provides another possible explanation for how peanut proteins might influence cancer spread.
It is important to understand what this study does and does not show. The researchers are not saying that peanuts cause cancer. They are also not recommending that healthy people stop eating peanuts.
For most people, peanuts remain a healthy food with many nutritional benefits. The concern mainly relates to people who already have cancer or who are recovering from cancer treatment.
Because this research is still at an early stage, scientists do not yet know how much peanut consumption, if any, might increase the risk of cancer spreading. Larger clinical studies will be needed before doctors can make firm dietary recommendations.
Until then, people with cancer should not make major changes to their diet without first discussing them with their cancer specialist or dietitian. Their healthcare team can provide advice based on the person’s type of cancer, treatment plan, and overall health.
The study was led by Professor Lu-Gang Yu and published in the journal Carcinogenesis. Although many questions remain unanswered, the findings highlight how foods and natural compounds may interact with the body in unexpected ways.
As scientists continue to learn more about the relationship between diet and cancer, patients and doctors will be better able to make informed decisions that support long-term health.
If you care about cancer, please read studies about how to fight cancer with these anti-cancer superfoods ,and a berry that can prevent cancer, diabetes and obesity.
For more health information, please see recent studies about how to harness the power of anti-cancer foods and supplements, and cancer-fighting foods and recipes.
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