In an age where cancer rates are rising incredibly fast, the need for alternative treatments is becoming even more prominent. Research is being put into a number of different avenues with one supporting Dr. Marty Pagel, PhD, from the University of Arizona Cancer Center, who will test the effects of sodium bicarbonate (baking soda) on breast cancer patients. He is receiving a $ 2 million grant from the National Institutes of Health (NIH) to find to perform the study.
An important note to understand right off the top- any treatment for cancer will react differently in various patients and also to various types of cancers. Traditional methods can work well on some cancers and terribly on others. The same can be said for various natural cures. On top of this fact, the state of the human body receiving treatment with either method also plays a big role. Do they have access to clean organic food? Clean water? Do they believe and feel they can overcome their disease? These are all important factors with any treatment.
A number of studies in the past have shown interesting in vivo results surrounding the use of sodium bi-carbonate on cancer tumors. While research is not fully complete on the matter, early results are already showing some powerful effects of tumor metastasis. This of course encourages funding for further research as early signs are looking good.
Dr. Robert J. Gillies and his colleagues have already demonstrated the effectiveness of baking soda in alkalinizing the area around tumors in mice. The same researchers found that bicarbonate increases tumor pH and also inhibits spontaneous metastases in mice with breast cancer. 
Lemon has shown to contain anti-carcinogenic properties as it contains limonoides which are phytochemicals found in a number of citrus fruits.  Lemon also has been shown to have strong anti-microbial effects which has been tested in research exploring the idea that cancer is very much like a fungus within the body.  When treating cancer as a fungus, various methods can be used and some have found that lemon and bicarbonate can help fight the fungus causing various types of cancer.
For the rest of the story: http://www.collective-evolution.com/2014/04/15/lemon-baking-soda-shown-to-be-powerful-healing-combination/