The Health Hazards of Cast Iron PansUpdated: June 17, 2018 Healthy Living
This may seem like heresy particularly since cast iron skillets are almost universally considered to be a healthy and durable choice for preparation of homecooked meals. However, I have good reasons for my head scratching decision, and science bears out my serious concerns about using cast iron pans unless they also include a quality enamel layer to prevent contact of the food with the iron surface.
Excess Iron is a Health Hazard
My primary reason for opting out of cast iron revolves around the health problems caused by excess iron in the diet. Research has demonstrated that cooking with iron pots and pans significantly raises iron levels in food. Correspondingly, the iron levels of those who eat that food increase as well. (1, 2)
Women do not typically need to worry about this problem as long as they are menstruating. The monthly cycle is a protective factor against this condition. Growing children also are not particularly susceptible as growth obviously requires more blood and more iron.
However, for adult men (even fully grown young men) and menopausal women, cast iron can definitely pose a problem as the iron that naturally gets into food from utilization of this type of cookware can result in iron rising to toxic levels. This condition is associated with a host of serious health problems.
Iron is one of the few minerals we cannot eliminate except through blood loss, therefore supplements should never contain iron. Moreover, cooking with cast iron is a questionable choice for this segment of the population.
Most people view iron as a nutrient, and indeed it is. It is also a powerful agent of oxidation in the body. This means that excess iron increases the chances of cancer and can severely damage the heart, arteries, and other organs. In addition, persons with an inherited condition called haemochromatosis, or iron overload disease, can be especially harmed from iron intake. If you have any family members with this condition (about 1 million Americans), you should be especially careful with sources of iron in your diet.
Iron Overload Symptoms
Unfortunately, the symptoms of iron overload are similar to those of other conditions. Therefore it may be wise to request a transferrin saturation test at your next check up to eliminate iron as a potential source of your health woes. This is particularly important if you suffer from any of the following and are an adult male or menopausal female:
- Joint or muscle weakness
- Mysterious stomach or other gastrointestinal pain/nausea
- Weight loss that cannot be explained
- Elevated liver enzymes
- Shortness of breath
- Early menopause
- Loss of sex drive
- Loss of body hair (this is also a symptom of adrenal fatigue)
Later stage symptoms of iron toxicity
- Greying or bronzing of the skin
- Blood sugar issues
- Irregular heartbeat
- Liver problems
How to Resolve Iron Overload Quickly
If you’ve been cooking with cast iron for a long time and are an adult male or menopausal female, it might be wise to donate blood right away. This practice will reduce iron stores immediately. Remember, loss of blood is the only way to resolve iron toxicity problems. Continue regular blood donation until you can completely switch over to another type of nontoxic cookware such as enamel, glass, or titanium.
Anemia Problems Are Usually an Imbalanced Gut – NOT – Inadequate Iron Intake
Believe it or not, there is plenty of iron in the diet of the typical American. Even those eating the horrific Standard American Diet need not worry about about inadequate iron intake. In addition, there is almost certainly adequate iron intake for a person eating a diet based on traditional foods and also in the diets of vegetarians.
Therefore, if you are anemic or suffer from pregnancy anemia and feel the need to use cast iron to increase your iron levels, you may wish to consider an imbalanced gut as a more likely source of the problem. Common gut pathogens consume iron and are a frequent cause of anemia. These pathogens include Actinomyces spp., Mycobacterium spp., pathogenic strains of E. coli, Corynebacterium spp., along with many others. Previous use of The Pill or antibiotics makes one especially prone to anemia issues.
Unfortunately, increasing iron intake with cast iron only makes these iron loving pathogens grow stronger. It does little to remedy anemia over the long haul. Therefore, rebalancing the gut with beneficial bacterial strains through diet and lifestyle changes rather than use of cast iron or iron supplements is the best approach to solving the root of the problem.
Using Cast Iron Safely
As mentioned above, using enameled cast iron is a safe option if you prefer the ease of use and heavy feel of cast iron pans. The enameled layer protects the food from contact with the iron portion of the pan and hence, offers an option that is both practical and safe. I recommend Le Creuset cookware as one of the best quality brands on the market if this is something you wish to explore.
It’s not just cast iron that is a potential health hazard. Learning to use stainless steel cookware, aluminum bakeware, and other kitchen equipment safely is of paramount importance for the modern cook. It’s not just about the food. Preparation is very important too to avoid the introduction of unwanted toxins!
Sarah, The Healthy Home Economist
The Healthy Home Economist has been a Nutrition Educator since 2002. She has served on the Board of Directors for the Nutrition nonprofit the Weston A. Price Foundation since 2011.
Sarah earned a Bachelor of Arts (summa cum laude, Phi Beta Kappa) in Economics from Furman University and a Master’s degree in Government (Financial Management) from the University of Pennsylvania.
Mother to three healthy children, blogger, and best-selling author, she writes about the practical application of Traditional Diet and evidence-based wellness within the modern household. Her work has been featured by USA Today, The New York Times, National Review, ABC, NBC, and many others.