Originally, alkaline is the body's natural and pure state. However, many factors in today's society contribute to an over acidic environment. These factors range from the abundance of processed foods, the overuse of antibiotics, the natural process of aging, and even stress. It is important for us to assist our body in creating and maintaining a healthy pH ratio of 70:30, alkaline to acid.
Most diseases, illnesses, and bad bacteria thrive in an over acidic environment. When pH levels are unbalanced, it is mostly in the case of being too acidic. This causes the body to borrow crucial minerals from organs, bones, and tissue to try and neutralize the acid and remove it from the body. Over acidity weakens all systems and can be seen in acute symptoms such as yeast/fungi overgrowth (candida among others), chronic fatigue, slow elimination, hormonal concerns, premature aging, free radical damage (may lead to cancerous mutations), weight gain, bladder and kidney damage such as kidney stones, diabetes, joint pain, and lactic acid build up.
Luckily for most of us, it is not too late to take measures and start making lifestyle changes to reduce the amount of acidity and create and maintain healthy pH levels. Even if we have a healthy ratio right now, it is just as important to maintain it through proper diet and lifestyle. Remember, preventative medicine is the best cure for all diseases!
The first step begins with diet. Below is a list of the levels of alkaline/acid foods. When in doubt about basic acid/alkaline properties of food remember that most vegetables, fruits, and herbs are alkaline forming. The most acidic foods (should be avoided) are processed flours and sugars, most dairy, soda, sugars, coffee, alcohol and harmful external toxins such as tobacco and over the counter medicine and drugs.
Refer to the charts below and use them as basic dietary guidelines.
"Note that a food's acid or alkaline-forming tendency in the body has nothing to do with the actual pH of the food itself. For example, lemons are very acidic, however the end-products they produce after digestion and assimilation are very alkaline so lemons are alkaline-forming in the body. Likewise, meatwill test alkaline before digestion but it leaves very acidic residue in the body so, like nearly all animal products, meat is very acid-forming." -- http://www.naturalhealthschool.com