Bacon is a type processed (cured) meat that often contains nitrates as preservatives. The problem with processed meat and nitrates is that studies have linked both to cancer [1, 2]. However, many other studies found that nitrates from food can have a positive effect on health, by for example helping make nitric oxide, a compound that keeps your blood pressure stable .
Nitrates are also present in many other foods and even in water. In fact, you get 80% of nitrates from vegetables rather than meat . So, we really don't know yet much about the role of nitrates in health.
If you want to play it safe, you can counteract any potential harm from the processed, deli, and cured meats by eating antioxidant-rich food.
Keto diet foods high in antioxidants include:
- Green tea, black tea and coffee, cocoa powder, red wine
- Eggplants (most antioxidants are in the peel)
- Artichoke, garlic sauerkraut
- Broccoli, brussels sprouts and kale
- Watercress and spinach
- Pecan nuts
- Spices such as cinnamon, vanilla beans and ginger root
- Xie L, Mo M, Jia HX, Liang F, Yuan J, Zhu J. Association between dietary nitrate and nitrite intake and site-specific cancer risk: evidence from observational studies. 2016 July 29 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5302962/
- Domingo JL, Nadal M. Carcinogenicity of consumption of red meat and processed meat: A review of scientific news since the IARC decision. 2017 April 24 - https://www.ncbi.nlm.nih.gov/pubmed/28450127
- Lundberg JO, Govoni M. Inorganic nitrate is a possible source for systemic generation of nitric oxide. 2004 August - https://www.ncbi.nlm.nih.gov/pubmed/15223073/
- Hord NG, Tang Y, Bryan NS. Food sources of nitrates and nitrites: the physiologic context for potential health benefits. 2009 May 13 - https://www.ncbi.nlm.nih.gov/pubmed/19439460