"An apple a day" is a well-known health slogan. Indeed, apples are rich in carbohydrates, organic acids, dietary fiber, vitamins, minerals, polyphenols, and flavonoid nutrients, earning them the scientific title of "all-around healthy fruit." So, what are the specific health benefits that have earned it such a reputation?
Preventing Cancer
Research from Hirosaki University in Japan has confirmed that polyphenols in apples can inhibit the proliferation of cancer cells. A study from Finland is even more exciting: flavonoids in apples are a highly effective antioxidant, serving not only as the best blood vessel cleanser but also a nemesis to cancer. If people eat more apples, the risk of lung cancer can be reduced by 46%, and the risk of other cancers can be reduced by 20%. The latest research from France's National Institute of Health and Medical Research also tells us that proanthocyanidins in apples can prevent colon cancer.
Strengthening Bones
Apples contain the mineral elements boron and manganese, which can enhance bone density. A U.S. study found that boron can significantly increase the concentration of estrogen and other compounds in the blood, which can effectively prevent calcium loss. Medical experts believe that if menopausal women can consume 3 grams of boron daily, their calcium loss rate can be reduced by 46%. Eating more apples is beneficial for calcium absorption and utilization, helping to prevent and treat osteoporosis.
Maintaining Acid-Base Balance
70% of diseases occur in people with an acidic constitution. Apples are an alkaline food; eating apples can quickly neutralize excessive acidic substances in the body (including acids produced by exercise and acidic metabolic products from acidic foods like fish, meat, and eggs), thereby enhancing physical strength and disease resistance.
Antioxidant Effects
A research team at Cornell University in the U.S. immersed rat brain cells in a liquid containing quercetin and vitamin C, finding that the antioxidant capacity of the brain cells was significantly enhanced. Compared to other vegetables and fruits, apples contain the best source of quercetin, and red apples are better than yellow and green ones. Therefore, for patients with Alzheimer's disease and Parkinson's syndrome, apples are the best food.
Lowering Blood Lipids
Human trials by the Japanese Fruit Research Institute showed that eating two apples daily for 3 weeks reduced triglyceride levels in the blood of subjects by 21%. High triglyceride levels are the main culprit in arteriosclerosis. When pectin from apples enters the human body, it combines with bile acids, absorbing excess cholesterol and triglycerides like a sponge before excreting them. At the same time, acetic acid broken down from apples helps in the metabolic breakdown of these two substances. Additionally, vitamins, fructose, magnesium, and other components in apples can also lower their levels.
Lowering Blood Pressure
Excessive sodium is an important factor causing high blood pressure and stroke. Apples contain ample potassium, which can combine with excess sodium in the body and excrete it, thereby lowering blood pressure. At the same time, potassium ions can effectively protect blood vessels and reduce the incidence of high blood pressure and stroke. Dr. Susan Orelich, a renowned British pharmacologist, discovered that the polyphenols and flavonoids in apples can effectively prevent cardiovascular and cerebrovascular diseases.
Weight Loss
Apples increase the feeling of fullness; eating them before a meal can reduce food intake, achieving the goal of weight loss.