Immune system can be improved through vegetables, fruit and other foods, which is called food therapy. Nowadays H1N1 influenza A is spreading worldwide. Most people are in panic and take many medicines to prevent H1N1 virus. In fact, some vegetables or fruits are useful to prevent H1N1 virus, above all, they are cheaper and have no side effect. Here are some foods which could prevent flu and even H1N1 virus at a certain extent.

Carrot

Scientific research shows that vitamin A have the function of protecting respiratory and gastrointestinal mucosa, so lacking of vitamin A is one of reasons for respiratory disease like H1N1. In my views, carrot is undoubtedly the best vegetables to supplement vitamin A.

Garlic

Garlic contains a special material which can stimulate human body macrophages to improve immune ability. By this way, flu and wound infection can be prevented.

Ginger

Ginger is sometimes used as medicine because it can promote blood circulation, eliminate fatigue and reduce appetite. From traditional Chinese medicine, ginger have the function of dispelling the cold, promoting digestion and detoxification. So it is useful to eliminate fever and headache. By the way, the morning is the best time to eat ginger or drink ginger soup.

Chili

Chili is rich in vitamin C, iron, calcium, phosphorus and vitamin B family. Every 100 grams fresh chili contains 144 mg vitamin C. Vitamin C can control heart coronary atherosclerosis and lower cholesterol. One thing you need to note is that excessive consumption of chili is harmful to the health and some people suffering from hypertension or tuberculosis should eat less chili.

Mushrooms

As is known to people, mushroom is delicious with rich nutrition, but not all people know that mushrooms can prevent flu effectively. Mushroom can promote metabolism and make people energetic. A research from nutritionists shows that mushroom contains a material called Michael sterol, which most vegetables lack. Michael sterol turns into Vitamin D through sunshine.

Chicken soup

Not only is chicken soup delicious, but also it has the ability to improve the body’s immune function. Chicken or chicken soup contains kinds of amino which are needed for people. If people in foreign country suffer from flu, the first thing they do is not to see a doctor, but to have a bowl of chicken soup.