Alkalized is when one's body works best. How does one know his/her body's pH? For me and our son, we check our first morning urine and saliva desiring a pH of 6.5-7.25 and 6.75-7.5 respectfully.
How does one get to this pH?
The less grains, sugar, and animals products and the more vegetables we consume the higher our pH becomes. There are so many acidic/alkalizing food charts. Use google to find one that is user friendly for you.
To alkalize is very individual. I can eat limited amounts of animal products (meat, cheese, eggs) a couple of times a week and stay within range. For me grains and sugar really lower my body's pH.
Whereas my son can have a couple of eggs a week, but not any other animal products. He also can only eat flax and quinoa.
Cucumbers are the best food to raise our pH. Cucumbers are low in sodium so a better choice than baking soda.
This is an article on how one's body being acidic may harm it and how alkalizing may help it. It has with many sources cited at the bottom.
Here is another link
Here is another good link for information concerning alkalizing: http://www.thebestofrawfood.com/alkaline-foods.html
This is from NIH on the benefits of an alkalized diet
Another from the Chopra http://www.chopra.com/ccl/neutralize-your-body-ph-with-the-right-foods?utm_source=Newsletter&utm_medium=Email&utm_content=CCL%20Newsletter%20150811&utm_campaign=August