Vietnam has a spice that you can eat a few slices of every day to both nourish your blood and help prevent cancer.

Boost immune system

Onions are rich in antioxidants, especially quercetin, which helps protect cells from free radical damage. Sulfur compounds in onions have the ability to stimulate the production of immune cells, such as lymphocytes. Vitamin C in onions supports the function of white blood cells, helping them fight pathogens more effectively.

Protect heart health

Quercetin in onions helps prevent the oxidation of LDL cholesterol (bad cholesterol), reducing the risk of plaque formation in the arteries. Sulfur compounds have the ability to reduce platelet stickiness, preventing blood clots. Potassium in onions helps regulate blood pressure, reducing the risk of high blood pressure.

Purple onions are extremely good for health but not everyone knows how to take advantage of them. Photo: Getty Images

Cancer Prevention

Antioxidants in onions, such as quercetin and anthocyanins, help protect cells from DNA damage, reducing the risk of cancer-causing gene mutations. Sulfur compounds have the ability to inhibit the growth of cancer cells and stimulate their self-destruction. Onions may affect signaling pathways involved in cancer development.

Improve digestive health

The fiber in onions helps increase intestinal motility, preventing constipation. Sulfur compounds have antibacterial properties, helping to balance intestinal microflora, reducing the risk of infection. Onions can stimulate the secretion of digestive enzymes, supporting the process of food decomposition.

Blood sugar control

Compounds in onions have the ability to increase insulin sensitivity, helping cells use glucose more effectively. Fiber in onions helps slow the absorption of sugar from the intestine into the blood. Onions can affect the process of glucose metabolism in the liver.

Enhance brain function

Onions contain an important compound called gamma-aminobutyric acid (GABA). This is a neurotransmitter that plays a key role in regulating brain activity. GABA acts as an inhibitor, slowing down the transmission of signals between nerve cells, thereby creating a feeling of relaxation and reducing stress.

Maintain bone density

Onions are a rich source of calcium, a mineral essential for building and maintaining strong bones. Calcium plays a key role in increasing bone density, helping to prevent the risk of osteoporosis and bone and joint problems.

Improve blood circulation

Rich in iron, copper, and potassium, onions play an essential role in the production of red blood cells, which helps prevent anemia and promote overall health. By increasing red blood cell production, onions improve the body’s ability to transport oxygen to organs and tissues. Good blood circulation increases energy, improves brain function, and supports cell growth.