Anti-Angiogenic Compounds Used In Drugs To Treat Cancer Are Found Naturally In Over 30 Foods
Angiogenesis is the process of building new blood vessels and is inherently coordinated with building new tissue, but increased angiogenesis can also have a deadly side effect - a distinguishing characteristic of cancer growth. Some cancer treatments for halting the growth of cancer-feeding blood vessels have been successful in treating tumors. This term is known as anti-angiogenesis. Although several drugs have been incorporated with isolated anti-angiogenic compounds, there are more than 30 dietary sources of naturally-occurring anti-angiogenic substances.
Angiogenesis plays a critical role in the growth and spread of cancer. A blood supply is necessary for tumors to grow beyond a few millimeters in size. Tumors can cause this blood supply to form by giving off chemical signals that stimulate angiogenesis. Tumors can also stimulate nearby normal cells to produce angiogenesis signaling molecules. The resulting new blood vessels “feed” growing tumors with oxygen and nutrients, allowing the cancer cells to invade nearby tissue, to move throughout the body, and to form new colonies of cancer cells, called metastases.
Dr. William Li, the president and medical director of the Angiogenesis Foundation recently spoke at a TED conference above.
“Angiogenesis is what makes the difference between a small, innocuous cancer and a runaway, dangerous disease,” says Li. Our bodies carry thousands of microscopic dormant tumors on a constant basis. Thankfully, our immune systems naturally prevent them from becoming larger and potentially harmful through the process of angiogenesis and vessel growth.
Li came to the TEDx event to talk not about cancer itself but about the intersection between good food and good health -- and particular foods that actually have the potential to “starve” cancer through the process of antiangiogenesis, preventing the growth of blood vessels that feed a tumor.
Most of us have heard for years about the potential cancer-fighting benefits of antioxidant-rich foods, such as berries, cherries, artichokes, apples, nuts, and green tea, to name a few. Li explained that research is still being conducted on whether antioxidants are significantly effective in preventing cancer. But his foundation’s research on foods that affect antiangiogenesis is compelling.
Chinese women who drank a cup of green tea three or more times a week lowered their colon-cancer risk by 34 percent. Other recent research finds that cocoa and chocolate are not only high in flavonols (antioxidants), but they also reduce markers of angiogenesis. Citrus and grapes bear similar traits.
Artichoke is said to contain 3 different cancer-fighting molecules and specifically counter angiogenesis. One of its phytochemical interferes with estrogen receptors which promotes the secretion of PSA in prostate cancer. And also has demonstrated proliferation and apoptotic proprieties and also inhibits inflammation in other studies.
A recent study conducted by researchers at UCLA’s David Geffen School of Medicine shows that pomegranate extract inhibits tumor blood vessel growth. Pomegranate extract inhibits both angiogenesis and tumor growth. In vitro, pomegranate inhibited the secretion of two key angiogenesis-stimulating proteins.
Based on the research of Angiogenesis Foundation, thyme is known to be rich in antiangiogenic phenol content, including apigenic, luteolin, erodictyol, rosmarinic acid and quercetin.
There are literally hundreds of more studies on all the foods listed above with supporting evidence that anti-angiogenic compounds within foods can prevent cancer. Let food be thy medicine.
Dr. Marianna Pochelli is a Doctor of Naturopathic Medicine specializing in the treatment of disease through superfoods and herbal strategies. She actively promotes detoxification, colon cleansing, and a vegetarian lifestyle using living foods as a platform to health.