1. Improves Digestive System
Issues with digestive disorders are often due to stomach acid, empty stomach, or unhygienic eating habits. Orange juice contains natural acids that help reduce pH and stimulate digestive secretions. As a result, the digestive system operates smoothly, better, and more efficiently.
Having a glass of orange juice in the morning can regulate bowel movements, ease bloating, and aid food digestion. Those who frequently experience diarrhea or constipation can benefit greatly from orange juice as it ensures regular bowel movements.
Due to its acidic and alkaline nature, orange juice also cleanses the stomach and digestive system regularly. With its anti-inflammatory properties, orange juice is beneficial in preventing bloating, especially in women.


2. Detoxifying the Body
One of the main functions of the liver is to prevent and metabolize toxins from the outside into the body such as alcohol, food, and smoke. However, the detoxification ability of the liver is limited. If the body receives too many harmful toxins, the liver may not have enough capacity to metabolize them, leading to their accumulation. This can initially manifest as a heated liver with symptoms like constipation, hives, itching, and discomfort. In the long run, the liver may suffer severe damage such as inflammation, fibrosis, and even life-threatening conditions like cancer. Therefore, when there are signs of a heated liver, immediate detoxification is necessary.
Oranges and grapefruits are rich sources of vitamin C, vitamin E, vitamin B1, vitamin B3, vitamin B9, and carotenoids. Additionally, they contain magnesium, copper, and zinc, making them highly beneficial for health. Apart from aiding in height growth in children, they also have anti-aging and immune-boosting properties. All the nutrients in oranges and grapefruits are essential for supporting liver health. Moreover, the antioxidants in these fruits help flush toxins out of the liver effectively. Furthermore, orange and grapefruit juice contains limonoids that prevent cancer, promote diuresis, and aid in detoxification. It's advisable to consume citrus juice in the morning or afternoon, avoiding usage in the evening.


3. Boosting the Immune System
Currently, the acute respiratory illness caused by the coronavirus is spreading with increasing complexity. It is crucial to build and enhance the immune system to help combat this type of virus before a vaccine becomes available. Orange juice, rich in various nutrients, especially high levels of vitamin C, assists in supporting the immune system and contributes to preventing Covid-19 infection.
Vitamin C is one of the compounds that enhance the body's immune system. A deficiency in this vitamin can make you more susceptible to diseases, particularly respiratory infections. However, our bodies cannot produce or store vitamin C, making daily supplementation through a variety of foods essential for boosting immunity and preventing diseases. Most experts recommend obtaining vitamin C from a diet rich in vegetables and fruits rather than using synthetic supplements. Freshly squeezed orange juice or concentrated frozen juice is an excellent choice for supplementation.
A portion of orange juice is believed to provide 200% of the body's required vitamin C, and once this vitamin is introduced into the body, it helps reduce the risk of illness. Often, children fall ill due to a weakened immune system, so it is crucial to provide them with oranges and its juice regularly. This not only enhances the immune system but also reinforces cells against infections and bacteria. Orange juice also supplies essential collagen components for cell repair and the development of new tissues in the body. It stimulates the immune system on a significant scale.


4. Orange Juice Helps Reduce Inflammation
Acute inflammation, a normal part of the immune response designed to protect against diseases and infections, can lead to the development of chronic conditions when prolonged and at high levels. Elevated signs of inflammation, such as C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α), have been observed in metabolic syndrome, cardiovascular diseases, and certain cancers.
Some studies identify the role of orange juice in reducing inflammation and issues related to inflammatory conditions. Orange juice also possesses anti-inflammatory properties that can decrease the levels of specific inflammatory markers associated with chronic diseases.
Furthermore, a study conducted with 22 participants over an 8-week period demonstrated that both fresh orange juice and commercially available orange juice reduced inflammatory markers such as CRP and IL-6 - potentially supporting disease prevention.


5. Improving Blood Circulation
Lưu thông máu kém xuất hiện bởi tác động của một số tình trạng như bệnh động mạch ngoại biên (PAD), tiểu đường, béo phì, hút thuốc. Lưu lượng máu giảm gây ra các triệu chứng như đau đầu, chuột rút, tê liệt, các vấn đề tiêu hóa. Ngoài những người có tuần hoàn máu kém, vận động viên và những người có cường độ tập luyện cao có thể muốn tăng lưu lượng máu để cải thiện hiệu suất tập luyện và phục hồi.
Cơ thể của chúng ta cần được cung cấp máu liên tục để hoạt động bình thường. Nếu tuần hoàn không thích hợp, các cơ quan không nhận được chất dinh dưỡng cần thiết và cuối cùng là trục trặc.
Cam có hàm lượng folate cao giúp hình thành DNA và đảm bảo tế bào phát triển khỏe mạnh. Folate cũng được biết là có tác dụng bảo vệ tế bào khỏi bị hư hại thường xuyên và chống lại các gốc tự do. Một ly nước cam hàng ngày không chỉ đảm bảo hoạt động đều đặn và trơn tru của máu trong cơ và các cơ quan mà còn giúp hình thành các tế bào hồng cầu mới cho thấy một cơ thể khỏe mạnh. Nước cam cũng làm giảm đáng kể quá trình oxy hóa tế bào.
Trong một nghiên cứu ở 31 người, những người uống 17 ounce (500 ml) nước cam ép mỗi ngày trong một tuần đã cải thiện đáng kể sự giãn nở động mạch và giảm đáng kể các dấu hiệu viêm như IL-6 và CRP so với nhóm đối chứng. Ngoài ra, tiêu thụ thường xuyên các loại trái cây có múi, như chanh và bưởi, có liên quan đến việc giảm huyết áp và giảm nguy cơ đột quỵ.


6. Cardiovascular Well-being
Heart disease, a grave concern contributing to over 17 million global deaths annually. Research suggests that incorporating orange juice for individuals with heart conditions may mitigate risk factors such as high blood pressure and elevated cholesterol, promoting a resilient heart. A study involving 129 participants consuming orange juice demonstrated prolonged effectiveness in reducing overall LDL cholesterol.
Furthermore, an overview of 19 studies on the cardiovascular benefits of citrus juice noted its positive impact on reducing systolic blood pressure.
Orange juice has also proven to elevate HDL cholesterol levels, potentially enhancing cardiovascular health, especially in individuals with pre-existing high levels.


7. Beneficial for Diabetes Patients
Oranges are a highly nutritious fruit. In 100g of orange, you'll find 87.6g of water, 1,104 micrograms of carotene, 30mg of vitamin C, 10.9g of starch, 93mg of potassium, 26mg of calcium. Additionally, with a similar weight, oranges contain 9mg of magnesium, 0.3g of fiber, 4.5mg of sodium, 7mg of chromium, 20mg of phosphorus, 0.32mg of iron, and an energy value of 48 Kcal. Rich in antioxidant phytochemicals, an average orange contains about 170mg of phytochemicals, including skin-nourishing and anti-aging compounds. Consuming fruits and vegetables high in phytochemicals may delay the sudden surge of glucose in the body, preventing the risk of diabetes.
Due to their phytochemical content, fiber, vitamins, and low fat, oranges are a good choice for diabetes patients in regulating blood sugar levels. However, it's advisable to avoid bottled fruit juices and concentrated juices as they contain excessive sugar, resulting in the loss of essential vitamins and lack of fiber.
Diabetes patients should prefer eating fruits directly rather than consuming fruit juices, as whole fruits provide more fiber. If opting for fruit juice, avoid adding sugar or honey. Prioritize fruits from the citrus family, like oranges and grapefruits, rich in vitamins, particularly vitamin C with antibacterial, antiviral properties, enhancing immunity. In this way, you can still enjoy orange juice but in moderation, limiting intake to 1-2 cups per day.


8. Boosts Dental, Bone, and Muscle Health
Entering middle age often brings challenges related to bone health for most people. The primary cause is often a deficiency in vitamins. Additionally, when uric acid accumulates in the joints, individuals may experience severe joint inflammation, causing discomfort and pain. Hence, one of the easiest ways to prevent bone-related issues is to consume oranges regularly, either as segments or as freshly squeezed juice.
Drinking orange juice daily helps the body eliminate uric acid, thus aiding in preventing the risk of conditions like gout or joint inflammation. However, it's crucial to consume pure, freshly squeezed fruit juice, as sweetened and sugary beverages not only contribute to excess calories but also give rise to other health concerns.
Calcium deficiency is a significant global health issue, affecting children and women the most. Oranges contain a good amount of calcium, which can address calcium deficiencies and maintain healthy blood pressure and blood flow.
The carotenoids in oranges act as a potent support against harmful free radicals that weaken bone health and development. Regularly drinking a glass of orange juice can contribute to stronger and more robust bones. Additionally, teeth and gum health benefit from a diet rich in fruits and orange juice. Orange juice helps enhance tooth enamel and gum health, while also combating bacteria and other infections that may linger in the mouth.


9. Boost Anti-Aging Properties
In addition to enhancing health, oranges are excellent for brightening the skin, a desire shared by many today. Oranges not only impart a radiant and glowing complexion but also aid in natural anti-aging. Thanks to the antioxidants present in oranges, the skin can generate new cells for repair and rejuvenation, resulting in a vibrant and youthful appearance.
It also helps reverse the effects of aging in individuals. Aging is primarily influenced by three factors - vitamin deficiency, free radicals, and an increase in toxins within the skin. Regular consumption of orange juice can help overcome all three issues and provide a youthful skin appearance. Oranges, in significant quantities, cleanse, detoxify, and nourish internal organs while reducing oxidative stress on the skin.


10. Support Cholesterol Improvement
According to statistics from the Vietnam Nutrition Institute, over 29% of adults suffer from high cholesterol. Although not directly causing death, high cholesterol is a leading factor in other dangerous diseases such as arterial plaque, coronary heart disease, etc. The good news is that individuals can reduce the risk factors for developing diseases by lowering cholesterol levels through daily exercise and diet.
Orange juice contains a substance called Hesperidin, a type of polyphenol with a flavonoid ring. Hesperidin functions to strengthen capillaries and is referred to as Vitamin P. Besides enhancing capillary strength, hesperidin has various benefits such as improving blood flow, reducing neutral fat levels in the blood, enhancing cholesterol levels, allergy prevention, improving joint symptoms, and more. Due to its antioxidant properties and blood pressure-lowering effects, hesperidin is effective in reducing the risk of heart disease and cerebral vascular disorders.
A study published in the 'Biomedical Environmental Science' journal in April 2008 also demonstrated that orange juice helps improve blood lipids by increasing 'good' HDL cholesterol and reducing 'bad' LDL cholesterol.


