The Risk Of Lead Contamination In Bone Broth Diets

charlie

The Law & Order Admin
Joined
Jan 4, 2012
Messages
11,621
Location
USA
:hattip Josh

The risk of lead contamination in bone broth diets.

http://www.ncbi.nlm.nih.gov/pubmed/23375414

Abstract

The preparation and consumption of bone broth is being increasingly recommended to patients, for example as part of the gut and psychology syndrome (GAPS) diet for autism, attention-deficit hyperactivity disorder, dyslexia, dyspraxia, depression and schizophrenia, and as part of the paleolithic diet. However, bones are known to sequester the heavy metal lead, contamination with which is widespread throughout the modern environment. Such sequestered lead can then be mobilised from the bones. We therefore hypothesised that bone broth might carry a risk of being contaminated with lead. A small, blinded, controlled study of lead concentrations in three different types of organic chicken broth showed that such broths do indeed contain several times the lead concentration of the water with which the broth is made. In particular, broth made from skin and cartilage taken off the bone once the chicken had been cooked with the bones in situ, and chicken-bone broth, were both found to have markedly high lead concentrations, of 9.5 and 7.01μgL(-1), respectively (compared with a control value for tap water treated in the same way of 0.89μgL(-1)). In view of the dangers of lead consumption to the human body, we recommend that doctors and nutritionists take the risk of lead contamination into consideration when advising patients about bone broth diets.
 

charlie

The Law & Order Admin
Thread starter
Joined
Jan 4, 2012
Messages
11,621
Location
USA
Ray Peat right, yet again. He has voiced his concerns of lead from bones.

Seems to me that it's better to stick with a good gelatin like Great Lakes Gelatin.
 

cliff

Member
Joined
Jul 26, 2012
Messages
425
Age
32
Location
Los Angeles
Nice find.
 

charlie

The Law & Order Admin
Thread starter
Joined
Jan 4, 2012
Messages
11,621
Location
USA
http://www.ncbi.nlm.nih.gov/pubmed/1397397

Abstract

Lead concentrations were measured in boiled, mashed potatoes and in baked potatoes that had been prepared and cooked in domestic kitchens. Levels of lead in the boiled, mashed potatoes ranged from below the 1 microgram/kg limit of detection up to 18 micrograms/kg with a mean of 6 micrograms/kg (wet weight). In the large majority of cases the lead in the tap water was the predominant source of the metal. Higher amounts of lead (range 11 micrograms/kg to 56 micrograms/kg, mean 27 micrograms/kg) were present in baked potatoes and this was attributed to soil adhering to the potato skin. The extent of leaching of lead from bone during cooking has also been investigated. For beef stocks there was little evidence to suggest that significant migration of bone lead occurred. For beef casseroles, marinaded in red wine, some leaching did occur from beef joints containing elevated amounts of bone lead; however the levels were all below 350 micrograms/kg and, on average, less than double that found in casseroles prepared from normal joints where the bone lead levels were an order of magnitude less.
 

charlie

The Law & Order Admin
Thread starter
Joined
Jan 4, 2012
Messages
11,621
Location
USA
http://chriskresser.com/bone-broth-and- ... -concerned

That said, given that the levels of lead in the chicken broth tested in the Medical Hypotheses study were below the EPA established safe upper limit for drinking water, and given the protective effect of several nutrients abundant in Paleo/GAPS diets (and even in broth itself), it seems to me that it’s quite safe to consume 2-3 cups of bone broth per day. This is likely to be even more true if your broth is made from pasture-raised chickens.
 

jaa

Member
Joined
Dec 1, 2012
Messages
1,035
F**k chickens. Kresser said that lead was found in broth made from skin and cartiladge. Does this mean that if beef bone broth is contaminated, that gelatin powders are likely to be contaminated as well?
 

Swandattur

Member
Joined
Mar 17, 2013
Messages
1,137
Location
Florida
I wonder about gelatin powders, too. Surely they would be contaminated as well. Peat does say chicken broth is good where you put it in the fridge and then take off the fat. Maybe you could make chicken broth from a whole chicken cooked for a few hours. Then you probably wouldn't be getting much of anything from the bones. It would be more from the skin.
 

jyb

Member
Joined
Nov 9, 2012
Messages
2,770
Location
UK
Swandattur said:
I wonder about gelatin powders, too. Surely they would be contaminated as well. Peat does say chicken broth is good where you put it in the fridge and then take off the fat. Maybe you could make chicken broth from a whole chicken cooked for a few hours. Then you probably wouldn't be getting much of anything from the bones. It would be more from the skin.

For Great Lakes, the can says heavy metals are less than 0.005%.
 

Mittir

Member
Joined
Feb 20, 2013
Messages
2,034
Beef Tendon is a delicacy in asian cuisine. This is full of gelatine and no bone is attached. RP talked about poisoning from beef bones . IIRC he mentioned presence of fluoride in bone meal. Do not know for sure how much of this fluoride is leached into bone broth.
 

4peatssake

Member
Joined
Feb 7, 2013
Messages
2,055
Age
59
Mittir said:
RP talked about poisoning from beef bones . IIRC he mentioned presence of fluoride in bone meal. Do not know for sure how much of this fluoride is leached into bone broth.

:eek Wow, this is disturbing to say the least. I have been trying to source organic beef bones locally (oxtail, knuckle bones etc) to make beef broth because of all I have read about its benefits. I guess I need to rethink this. :cry:

I eat 2-4 tbs of gelatin a day now but had read so much about others having such significant healing with the bone broth that I was considering it to be a necessary next step. hmmm

I wonder if RP is still drinking bone broth. Does anyone know? Or what his current thinking is on bone broth?
 

montmorency

Member
Joined
Jul 14, 2013
Messages
255
Location
Oxfordshire, UK
I mentioned bone broth in an email to Ray (I've only rarely emailed him), and he said not to boil/simmer the bones for too long (I had been adding fresh water and re-using my bones to some extent).


He didn't mention lead specifically, but said there was a potential problem, especially with older animals, of heavy metal accumulation.

So now I tend to limit my cooking time to 2-3 hours, maybe 4, and I don't re-use them.

(I've read of some people slow-cooking them for days!).
 

Swandattur

Member
Joined
Mar 17, 2013
Messages
1,137
Location
Florida
As the article in the westonprice link says, you have to consider where the beef or chicken is raised as well as other factors. Sounds like under certain circumstances the skin could be contaminated, too, but it seems odd that the bones wouldn't also have lead if the skin had lead. Maybe the chickens mostly ate uncontaminated feed, despite being free range enough to take dust baths outside. Maybe any bugs and worms would not be lead contaminated?
 

montmorency

Member
Joined
Jul 14, 2013
Messages
255
Location
Oxfordshire, UK
Swandattur said:
post 25593 As the article in the westonprice link says, you have to consider where the beef or chicken is raised as well as other factors. Sounds like under certain circumstances the skin could be contaminated, too, but it seems odd that the bones wouldn't also have lead if the skin had lead. Maybe the chickens mostly ate uncontaminated feed, despite being free range enough to take dust baths outside. Maybe any bugs and worms would not be lead contaminated?

Peat wrote to me once that the factors were the age of the animal, plus how long you cook it. (Some people cook this stuff for a heck of a long time).
With a young animal, and sticking only to say 2-3 hours, that might minimise the problem.
 
Last edited by a moderator:

jyb

Member
Joined
Nov 9, 2012
Messages
2,770
Location
UK
montmorency said:
So now I tend to limit my cooking time to 2-3 hours, maybe 4, and I don't re-use them.

(I've read of some people slow-cooking them for days!).

But how do you get a gelatinous broth after just 2-3 hours slow cooking? I've had trouble even after 3 days.
 
Joined
Aug 18, 2015
Messages
1,789
I found this quite disturbing and emailed ray about it.. here's what he had to say. This guy is a genius, literally:

Using ox-tail or lamb shanks, the idea is to extract gelatin from the cartilage and ligaments associated with joints; it takes two or three hours of cooking to dissolve most of the gelatin. The shafts of long bones contain too much iron; prolonged cooking extracts heavy metals from the bones.
 

Birdie

Member
Joined
Aug 10, 2012
Messages
1,945
Location
USA
I found this quite disturbing and emailed ray about it.. here's what he had to say. This guy is a genius, literally:

Using ox-tail or lamb shanks, the idea is to extract gelatin from the cartilage and ligaments associated with joints; it takes two or three hours of cooking to dissolve most of the gelatin. The shafts of long bones contain too much iron; prolonged cooking extracts heavy metals from the bones.
Thank you. I couldn't remember why he used a 3 hour limit.
Great quote. Very helpful subject. Thanks @charlie.
 
Similar threads
Thread starter Title Forum Replies Date
Mito Does High-carbohydrate Intake Lead To Increased Risk Of Obesity? A Systematic Review And Meta-analys Articles & Scientific Studies 29
S Acetaminophen (APAP) increases risk taking behaviour Supplements, Pharmaceutical Drugs 0
haidut Compared to meat eaters, vegans / vegetarian / pescatarians have higher risk of fractures Scientific Studies 0
A Cheap Vitamin C products, any contamination risk? Ask For Help or Advice 8
managing Risk/Reward Analysis and Personal Decision Making on Covid 19 Vaccines Viruses, Parasites, Fungus, Vaccines 4
P Aspirin Use Reduces Risk Of Death In Hospitalized COVID-19 Patients Scientific Studies 0
haidut Aspirin Has Dramatically Lower Bleeding Risk Than Pharma Anticoagulants Scientific Studies 10
E SARS-CoV-2 Spike Proteins Disrupt The Blood-Brain Barrier, Potentially Raising Risk Of Neurological Scientific Studies 2
ddjd Aspirin Significantly Lowers Risk Of Complications, Death In COVID Ask For Help or Advice 4
Drareg Obesity And COVID 19 Increased Risk Of Adverse Outcomes Scientific Studies 5
W High Fructose = Fatty Liver Risk? Diet 40
D Drinking Lots Of Green Tea A Risk For Low Thyroid? Thyroid and Hormones 17
E Drugs Like Losartan Increases Heart Attack Risk Scientific Studies 9
F Genes, Blood Type Tied To Risk Of Severe COVID-19 Vaccines 0
F Bald Men At Higher Risk Of Severe Covid-19 Viruses, Parasites, Fungus, Vaccines 9
fitnessgirl SSRI Increases Risk Of Pulmonary Hypertension In Newborns Scientific Studies 0
LLight Reduced Vitamin K Status As A Potentially Modifiable Prognostic Risk Factor In COVID-19 Viruses, Parasites, Fungus, Vaccines 7
haidut PUFA Increases Risk Of All Cancers, Especially Prostate Scientific Studies 0
E Aspirin Linked To Reduction In Risk Of Several Cancers Of The Digestive Tract Scientific Studies 3
T Covid-19: Risk Of Death Less Than That Of Car Commuters Scientific Studies 0
David PS Risk Management Expert And Engineering Manager Discuss Coronavirus Strategies Viruses, Parasites, Fungus, Vaccines 13
haidut In Most Cases, Genes Have Less Than 5% Contribution To Disease Risk Scientific Studies 4
R Children Who Drank Whole Milk Had Lower Risk Of Being Overweight Or Obese Scientific Studies 3
Kingpinguin Dietary Vitamin E But Not Supplemental Significantly Decreased Risk Of Parkinson Scientific Studies 11
Blossom Antibiotics And Increased Risk For Parkinson's Disease? Articles & Scientific Studies 9
Mito Omega-3 Shows Protection Against Heart Disease-related Death, Without Prostate Cancer Risk Articles & Scientific Studies 2
bzmazu Medicines Pose Global Environmental Risk Supplements, Pharmaceutical Drugs 0
GutFeeling Male Pattern Baldness And Premature Greying Are More Of A Risk Factor For Heart Disease Than Obesity Scientific Studies 0
H Niacin Skin Sensitivity Is Increased In Adolescents At Ultra-High Risk For Psychosis Scientific Studies 2
E Eating Mushrooms May Help Lower Prostate Cancer Risk Scientific Studies 0
haidut Vegans And Vegetarians Have A Higher Risk Of Stroke Scientific Studies 6
L Breast Cancer Risk From Using HRT Is ‘twice What Was Thought’ Cancer 0
L Breast Cancer Risk From Using HRT Is ‘twice What Was Thought’ Cancer 8
Fractality Major Surgery Doubles Risk Of Substantial Brain Decline, Study Suggests Articles & Scientific Studies 2
B TRT Can Increase Men's Risk Of Stroke And Heart Attack Male Issues 11
R Sugary Drink Consumption And Risk Of Cancer Scientific Studies 0
haidut Statins More Than Double The Risk Of Diabetes Compared To Non-users Scientific Studies 0
Hans Breakfast Skippers Might Be At Higher Risk Of Metabolic Inflexibility And Inflammation Scientific Studies 21
Mito Low Vitamin D At Birth Raises Risk Of Higher Blood Pressure In Kids D 0
haidut Aspirin Actually Decreases Risk Of Bleeding In The Brain Scientific Studies 5
haidut Daily Aspirin Reduces By 37% Risk Of Fatty Liver Progressing Into Cirrhosis Scientific Studies 5
yerrag RDW- An Overlooked Yet Low-Cost Biomarker For Cardiovascular Risk Heart, Heart Rate, Blood Pressure 20
Rambo Association Of Sugary Beverage Consumption With Mortality Risk In US Adults Scientific Studies 4
Mito Cholesterol-lowering Drugs Tied To Reduced Glaucoma Risk Articles & Scientific Studies 0
Cirion High Risk Stock Trading The Ray Peat Forum Lounge 76
B IStockphoto HPV VACCINATION SCHEME IN UK HAS ‘DRAMATICALLY’ LOWERED CERVICAL CANCER RISK Health 5
Lokzo Diets High In Resistant Starch Associated With CVD Risk Scientific Studies 0
burtlancast Alfred Sommer: The Risk Of Child Death Is Directly Related To The Risk Of Vit A Deficiency A 11
B Testosterone Linked To Higher Risk Of Heart Disease Heart, Heart Rate, Blood Pressure 6
Mito Proton Pump Inhibitors Linked To Increased Kidney Disease Risk Scientific Studies 0

Similar threads

Top