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    Could Your Slow Cooker Be Leaching Neurotoxic Lead?

    33KViews Modified: Feb 21, 2025 · Published: May 22, 2016
    By Jacqueline 17 Comments

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    Could Your Slow Cooker Be Leaching Neurotoxic Lead? A red CrockPot
    (Source: Creative Commons – Flickr)

    I started researching slow cookers in order to replace mine when I found crazing in the glaze. In the end analysis, this may or may not be a big deal. However, I thought this would be worthy to pass on for those who were unaware of this as I was so you can make your own evaluation.

    [Excerpts used with permission of US Wellness Meats: Written by Kelley Herring, Healing Gourmet]

    In the 1970s, the electric slow cooker became almost as popular as disco music and pet rocks. As you probably already know, the slow cooker has made a dramatic resurgence in recent years. And it’s not just for their convenience (although that’s still a top selling factor).

    It’s also because “slow cooking” is a very healthy way to cook. Cooking “slow and low” in a sealed chamber helps to keep the moisture and the nutrients in your food. It also helps to prevent the formation of cancer-causing compounds – such as lipid oxidation products (LOPs) and heterocyclic amines (HCAs). These dangerous compounds form when certain fats and most meats are cooked at high temperature.

    Unfortunately, there is a potential danger lurking in your slow cooker that you may not know about: lead.

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    The Dangers of Lead

    Lead is a neurotoxic heavy metal and a systemic poison that affects every organ in the body.

    The medical consensus is that there is no safe level of lead exposure. And while the health risks of lead are great for all of us, they are especially harmful to children, who absorb a higher proportion per body weight and are more vulnerable to its effects.

    What’s more, lead exposure is cumulative over time. According to the Mayo Clinic:

    “Lead poisoning occurs when lead builds up in the body, often over a period of months or years. Even small amounts of lead can cause serious health problems.”

    So while one serving of food prepared using contaminated cookware won’t kill you, over the years, it could lead to lead poisoning. In adults, lead poisoning is linked to a wide number of neurological problems. In children it is linked to:

    •    Learning disabilities
    •    Developmental delays
    •    Lower IQ scores

    And what’s more, lead poisoning is often “silent” with no obvious symptoms.

    Is Your Slow Cooker Leaching Lead?

    Could Your Slow Cooker Be Leaching Neurotoxic Lead? Bill Gephardt reporting
    (Source)

    In 2004, Bill Gebhardt of Salt Lake City’s KUTV investigated the lead content in a number of kitchen tools, including slow cookers. In his investigation, he took a number of slow cookers to the Data Chem Lab in Salt Lake where they were analyzed for lead.

    Crockpot inserts (what you put your food into), are most commonly made of glazed ceramic, which has a reputation for leaching lead. His analysis found that 20% of slow cookers were leaching measurable amounts of lead into food. 

    When ceramic vessels are heated to just 80 degrees Fahrenheit, they release ten times the amount of lead than they do at room temperature. And slow cookers heat up to more than 250 degrees Fahrenheit.

    While temperature is part of the equation, time and acidity also impact lead-leaching. This means that acidic ingredients like vinegar, tomatoes or citrus, as well as longer cooking times will cause more lead to be released from the vessel and into the food.

    From the reports available on the topic, most of the lead leaching is believed to come from the glaze – the smooth, often brightly-colored coating on the inside of the slow cooker vessel. This is because lead compounds, such as lead oxide, have historically been used in glaze formulations.

    A vast majority of slow cookers state that their products do not contain leaded glaze or that their slow cooker is in accordance with government guidelines for lead (the FDA Compliance Policy states that leach levels of 1 mcg/mL are acceptable for large vessels such as slow cookers).

    However, these levels do not necessarily infer safety. Nor is this level indicative of the actual leaching that can occur with normal cooking and the variables of time, temperature or acidity of ingredients.

    Many other companies purport that their product is “safe” as long as there is no cracking, chipping or haziness of the glaze.  But that isn’t a very reassuring statement given the fact that micro-fissures are undetectable to the eye and lead is a systemic poison with cumulative effects.

    And to balance this post, there is conflicting information in this post: Can Your Ceramic Cookware Give You Lead Poisoning? Crock-Pot lovers, please don’t be upset with me! I am not trying to be an alarmist.

    And how about unglazed inserts? These too can pose an issue as lead is naturally found in all ceramic materials and clay.

    So, (Keep in mind, “meets FDA guidelines” does not mean it is free of lead, and “lead free” only means that it does not contain “extractable” lead.)

    Slow Cooker Brands and Lead Contamination

    Recommendations:

    Could Your Slow Cooker Be Leaching Neurotoxic Lead? the lead-free VitaClay Slow Cooker

    1. VitaClay:  Clay pots made by VitaClay are manufactured using organic Zisha clay. Zisha is an extremely pure clay. Most risk of lead contamination comes from glazed ceramic dishes and pots. The Zisha clay pots are unglazed and have been certified by an independent third party lab as lead-free (test results here), exceeding the FDA, CA 65, and UL safety requirements. If the clay pot chips or breaks for whatever reason, it can be easily replaced without buying a whole new cooker. Clay pots are very resistant to damage, by the way, so the chances of this happening are low.

    Could Your Slow Cooker Be Leaching Neurotoxic Lead? Instant Pot 7 in 1

    2. Instant Pot IP-DUO60 7-in-1 Slow Cooker, 6Qt 3-ply bottom Food Grade 304 (18/8) stainless steel cooking pot completely lead-free.  4.5 star rated by 8,022 reviewers. #1 Best Seller. The video shows it all in detail………………………..>

    3. 360 Cookware Gourmet Slow Cooker and Stainless Steel Stock Pot: Food Grade Stainless steel completely lead-free. 4.5 star rated by 83 reviewers. Very beautiful but very expensive.

    4.  Precise Heat 12-Inch Surgical Stainless Steel Deep Electric Skillet/SCould Your Slow Cooker Be Leaching Neurotoxic Lead?  Precise Heat 12-Inch Surgical Stainless Steel Deep Electric Skillet/Slow Cookerlow Cooker: Insert is surgical grade stainless steel and lead-free. Full 5 star rated in reviews ………………………………………………..>

    Companies you’ll have to take their word for it:

    • Proctor Silex: States there is “no lead or cadmium in the crock”.

    • KitchenAid: States their slow cooker glazes are lead-free.

    • Crock Pot & Rival: States their product meets FDA guidelines for lead.

    • Cuisinart: States their slow cooker glazes are lead-free.

    • Hamilton Beach: “Satisfy FDA heavy metal requirements”.

    • West Bend: “Glazes are inspected for maximum allowable amounts of trace elements in accordance with the United States Food and Drug Administration’s guidelines. If the glazes are chipped or cracked, the vessel should not be used.”

    Prop 65 and Lead Contamination in Slow Cookers

    While the FDA guidelines (and even individual companies) are unhelpful in regards to determining how much lead your slow cooker may be leaching, California Prop 65 – The Safe Drinking Water and Toxic Enforcement Act of 1986, can provide additional clarity on this murky issue.

    With Prop 65, you can determine if your slow cooker leaches more than 0.1 parts per million of lead (this is 10 times LESS than the FDA limit of 1.0 ppm or 1 mcg/ml).  

    An easy way to find out if your slow cooker is subject to Prop 65 labeling? Check out Amazon to look under the “Product Details/Information” section. If the item has a Prop 65 label, there will be a statement:

    “California residents: click here for Proposition 65 warning.”

    While this provides an added layer of protection from what the FDA mandates, unfortunately, amounts of lead even below the Prop 65 limit of .1 ppm can be measurably harmful (especially for developing fetuses and children).

    How to Protect Your Family from Lead Exposure

    In this day and age, there are many potential hazards in our food supply and cookware.

    Tamara Rubin (Lead Safe Mama) says that testing for lead is a waste of time.  You CANNOT use a LeadCheck swab to test your CrockPot liner for Lead. The Lead levels are far below the detection limits for the swabs. Many bloggers have suggested this in their posts about Crock Pots and this is simply a waste of your money. You can read more about that here.

    Here are 3 ways you CAN help protect your family from lead exposure:

    1.  Go Inert: Opting for tried-and-true inert cookware – including glass (like Pyrex), stainless steel, cast iron, and enameled cast iron. Always do your research before purchasing.

    2.   Avoid “Made in China”: Do not buy glazed plates or cooking items that come in contact with food that are made in China – they have less regulation on chemical contamination. 

    Helpful read: What’s with China and Lead Poisoning?

    3.   Detox Naturally: Detoxify from aspartame AND heavy metals with this protocol.

    Kelley Herring is author of more than a dozen books on nutrition and natural healing. She is also the co-founder of  Wellness Bakeries, which has just released their newest product – Better Bread – a 100% Paleo bread mix you can whip up in 5 minutes flat.

    Could Your Slow Cooker Be Leaching Neurotoxic Lead? Kelley Herring

    ***For the Full Spike Protein Protocol to protect from transmission from the “V” and to help those who took the “V”, go here.

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    Could Your Slow Cooker Be Leaching Neurotoxic Lead? A red Crock Pot

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    Hi! I’m Jacqueline!

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    Welcome to my own little place on the internet! Home is where I love to be. I feel there is no greater place to incubate souls. These days you’ll find me using my experiences here to write about herbal remedies and natural health research — a big passion of mine. But being a wife and mother is not easy. It is challenging and potentially lonely. I get that. I wanted to create a place to connect with and support other moms for creating a natural, healthy, and fulfilling home life.
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