More often than not “health-gurus” and “health bloggers” including some with MEDICAL credentials will (in their writing) attempt to diminish or discount the impact of the concentrated levels of lead found in bone broth.
- Lead bio-mimics calcium when absorbed by natural structures.
- Bones are high in calcium.
- That is why bones are a storehouse for lead (in all animals).
- If an animal is exposed to lead in their environment—from feed (many documented sources for contamination here), from soil, from tractors and other farm vehicles’ exhaust (yes, many of these – legally – still use leaded fuel!), from both modern and legacy paint and industrial finishes on farm equipment and buildings (yep, lead still legal in lots of “non-residential” paint as well!)— then their bones will absorb and accumulate this lead in the place of calcium.
- When you make broth from these bones (vs. from the meat of the animal) – be it a chicken or a cow or a pig, you are using the most leaded part of the animal to make the broth.
- The broth will pull all of the “nutrients” and “minerals” out of the bones and into the broth… and this includes lead.
There is no valid justification (not a single one) to intentionally concentrate lead in a single food source to add it to your diet. Just don’t do it. Make your broth out of the meat of the animal. Source your broth ingredients from known farms – where you have EVIDENCE that the farm does not use leaded gasoline (which, as stated above, is still legal to use in farm equipment) and does NOT have old lead painted farm buildings (it’s also perfectly legal for even organic farms to have old lead-painted buildings, vehicles, and industrial equipment!) and does NOT have soil that is lead contaminated from previous / legacy leaded pesticide use, and is NOT near a freeway or small airport that might have generated a lot of lead residue from leaded gasoline use [in the past for freeways and in the present for small airports (you guessed it – small planes still -legally- use leaded fuel!] that may have contaminated the soil.
The quote below is from the following article. (link here). In spite of this quote, this “health blogger” is still advocating for the use of bone broth as a healing substance!
These blogs are citing each other as “evidence” for disregarding the settled science in this matter!
Like with Earthpaste, these people are too passionate about the alleged health benefits of something, to even begin to realistically consider or assess the actual, scientifically measured, known health risks of that same thing. Their passion is blinding them to the truth.
Here’s someone who knows their stuff and has a blog! NutritionFacts.org
Watch this amazing video ^^^^
Here is the link to the actual 2013 bone broth study abstract:
Additional info for folks who question the presence of a concentration of lead in bones. There are many scientific journals and articles that discuss the fact that lead is concentrated in bones because lead bio-mimics calcium and bones are calcium-dense. [The articles have nothing to do with broth, but with bone development in biological structures – including animals … including chickens, cows and humans.] Here is one example that I found without to much googling:
From the book: “Fundamental Concepts of Environmental Chemistry”