How Lemon juices solves Gastric & various problems

Lemon juice:
Lemon juice is widely recognized for its medicinal properties. In fact, it has been used for hundreds of years for medicinal purposes. 

It is a natural antihistamine and will reduce congestion. Very effective for all gastric problems, it helps to strengthen your immune system.
When taken regularly first thing in the morning, the fresh juice acts as a tonic to the liver and stimulates it to produce bile making it ready to digest the day's food. It helps to lower blood sugar and can lower the glycemic impact of any meal.
Excellent  cleanser :
Lemon juice is excellent as a cleanser because it affects the efficiency of the body's digestive system. Years of eating fried and processed foods means your digestive system can become sluggish and inefficient. 
Natural metabolizer:
It is a tremendous natural metabolizer, breaking down the mucus and fat that can build up in the body, helping to break up hardened material in the joints and muscles, it clears the kidneys, dissolves toxins and congestion all throughout your body and lymphatic system.
It breaks up and dislodges the sticky mucus deposits that tend to clog up the system. Full of powerful enzymes and with a high vitamin-C content, the juice will flush your system of toxic wastes. Which is why it is said to help to prevent and cure osteoarthritis and the development and progression of atherosclerosis.
Health Benifit of Lemon juice:
Another great health benefit is that the juice of a lemon can protect your body against germs and bacteria. When used as part of a cleansing process it helps to rid the body of gallstones. It helps make colds less toxic in the body and can reduce the length of a cold. It is also one of the best alkalizing foods for the body.
The fresh juice can lower blood sugar and lower the glycemic impact of any meal. Supplying one of the richest and most concentrated food sources of vitamin C. Recent research suggests that people who include more fresh citrus fruits and juices in their diet are more likely to lose weight and are less likely to suffer from obesity as they generally are less hungry, therefore consume less food. The citric acid in lemons helps to stimulate gastric juices and saliva, helping the digestive process.

Control & reduce the problems
It helps to control Blood Pressure, purifies blood, reduces swollen spleen and strengthens immune system as it has vitamin C, B, B2, calcium and iron. It protects your body against germs and bacteria. 
The juice is also effective for people suffering from acid reflux because it stimulates the flow of saliva and gastric juice and is an excellent digestive agent.
Lemon juice will help constipation, liver disorders, reduce mucus accumulation, improve digestion, reduce infections, and help to clear skin disorders like acne. It can even boost immunity and brain function, fight cholesterol and fire up your metabolism. 
Cleansing the lymphatic system, invigorating skin tissue and increasing blood flow.
It is a potential detoxifier for you and can drain away all toxins out of your body. it is a most potent solvent for breaking up the calcified formations existing in the body. Mixing the juice of a fresh lemon with water easily relieves heartburn.
I am a great believer in freshly squeezed juice. Nearly all of the store bought juices are filled with chemicals, pasteurized and not fresh at all. Processing lemon juice can seriously damage its health benefits. I like to make my own juice as it's really easy and quick.
Pick up an electric citrus press, they are very inexpensive. Cut one or two lemons in half and juice them yourself. That way you can include the pulp which is a great source of natural fibre in your juice as well. I like to add a some hot water, it makes the juice easier to drink and it will be closer to the temperature of your body. It takes me no more than 5 minutes in the morning to prepare my juice. I do it while I am brewing some nice decaf coffee.
Don't be tempted to add anything else to the pure juice and pulp such as sugar, honey or sweetners. If you do this then you are not drinking pure home made lemon juice and the health benefits I have written about here will not apply. In just a couple of days your taste buds will become used to the taste of lemon juice and you will have no problem drinking a glass or two per day.
The very first thing I take every morning is freshly squeezed home made lemon juice with a good dash of hot water. I really enjoy it and wouldn't miss it, especially now that I know about all the amazing health benefits it is giving me.
Teeth Problems:
I like to follow my juice with a glass of warm water, I swish it around my mouth and teeth before swallowing it. This way I have washed away any residues of the lemon juice from my teeth and gums.