Although research into the use of baking soda, or sodium bicarbonate, for use in treating cancer is ongoing as of 2015, no published clinical trials to prove its efficacy exist, notes Cancer Research UK. Large doses of sodium bicarbonate can lead to alkalosis, a serious medical condition.
The myth of baking soda's effectiveness stems from the belief that cancer is a fungal infection and that tumors occur as a result of the body trying to protect itself, notes Cancer Research UK. Proponents of a baking soda remedy believe that it treats this fungal infection.
However, some scientific studies in mice have found that sodium bicarbonate affects cancer by creating a less acidic environment around tumors, as Cancer Research UK explains.