Dairy: Friend or Foe? – Episode #5 – Summer Tomato Live [video]
Thanks to those of you who participated in this episode on the role of dairy in health and weight loss. Show notes are below.
Please note that the date for the probiotics episode (#6) has changed to Monday, April 25 @ 6:30p PST (previously Tuesday, April 26).
April 11, 2011 | Does milk really protect against osteoporosis? Will too much calcium give you prostate cancer? Can you reduce acne if you stop eating dairy? What’s the deal with raw milk?
The answers may surprise you.
Tune in tonight at 6:30pm PST to join our live discussion about the pros and cons of dairy.
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Show notes:
There is a huge amount of politics surrounding this science, because of the powerful influence of dairy industries around the world. This makes data difficult to interpret. The following review and its rebuttal regarding the role of milk in type 1 diabetes is a perfect example of what I mean:
Dairy & type 1 diabetes
- Literature review
http://www.nature.com/ejcn/journal/v59/n5/full/1602104a.html#bib11
- Critique of review based on funding influences
http://www.nature.com/ejcn/journal/v60/n3/full/1602322a.html
Dairy and osteoporosis
- Recommended calcium intake = 1,000 mg for adults
- Osteoporosis is more common in Western countries than in Asia, Africa or So. America
- Western and developed countries consume the most dairy, and as countries consume more osteoporosis becomes more common
- Correlation between high calcium intake and hip fractures
- Also, much of the world is lactose intolerant
- Some evidence that dairy protects against osteoporosis
- Calcium supplementation does not protect against fractures
- Vitamin D, calcium, fruits and vegetables, protein important for bone health
- Diet “acidity” (from protein & other sources) is not a factor in osteoporosis
Dairy and acne
- Dairy consistently shown to promote acne, probably via hormonal mechanisms
- Treat acne with low GI foods (skip sugar & flour) and omega-3 fatty acids
Dairy/calcium and heart disease
- Calcium supplementation increases CVD risk
Dairy/calcium and prostate cancer
- Calcium increases prostate cancer risk
- Reduce risk with legumes, nuts, seafood
Dairy/calcium and colon cancer
- Calcium decreases colorectal cancer risk
- Though data is inconsistent
Dairy & breast cancer
- Dairy and meat do not promote cancer in adult women
- Some studies show reduced risk of cancer (both from China)
- Milk from cows given rBGH (hormone from Monsanto) increase cancer risk
Dairy & weight loss (very tough to find studies not funded by dairy industry)
- Moderate weight loss from dairy (but rarely from intervention studies w/o caloric restriction)
- Possible mechanisms include:
- Ca++
- protein
- conjugated lineoleic acid (CLA)
- medium-chain fatty acids
- My interpretation: dairy not likely to have big impact on body weight
Cheese protects against cancer and heart disease?
- http://www.ncbi.nlm.nih.gov/pubmed/20335553
- http://www.ncbi.nlm.nih.gov/pubmed/19179058
- http://www.ncbi.nlm.nih.gov/pubmed/21447660
Extras
- Raw Milk, A Potentially Risky Elixer, by Bill Marler
Bookmarked! Not going to miss any link and posts listed here 🙂 Thanks for bringing the subject out here.
I am so glad I found you Darya. Like you said, there is so much information out there saying so many different things. I decided I would find and expert with no agenda, and then follow the recommendations of that one voice. I have enjoyed your posts, and now your shows. Thanks so much your research and then sharing your findings. I am living in Thailand, so I can’t listen to you live, so thanks for posting the video.
I don’t eat a lot of dairy over here, but we have noticed that when dairy started coming into the market here, that the kids began to get larger and taller. My dentist here said that the teeth have gotten harder and stronger and say the Dutch have the strongest teeth. (comments?)
I noticed when I used to drink milk at night to relax and help me sleep that it really worked and whenever I drank warm milk I would get sleepy. (comments?)
Again, thanks for all your great research and helping us wade through it!
Hottie!!
Thanks a lot for answering my question about milk processing 🙂
Again, lots of great information. Keep up the good work !
I was wondering which vitamin D you took as a supplement. When I went to the drug store to get some there was also vitamin d3. I wasn’t sure which to get.
Also, I have been encouraging my kids to drink milk since they won’t drink water. What should kids drink? I bought some sugar free flavor packets for them to put in water but I’m worried about the artificial sweeteners in that so now I’m torn.
Thanks,
Jennifer
Hi Jennifer,
You want vitamin D3. I take the Carlson brand drops, and aim for 5000 IU.
Regarding kids, I don’t have much experience with them. Milk is probably fine so long as they aren’t guzzling it, but I would make an effort to get hormone free and preferably organic if you can. I don’t recommend the artificial sweeteners at all. You can also try mixing a splash of real juice with sparkling water.
Thanks for replying. I did get d3 and have been taking it daily.
As for the kids, it is a challenge especially when they receive free sodas after there ballgames and other family members (my mother) buy rice crispie treats for their breakfast and goldfish crackers for their lunch. And the school has ice cream in the afternoons for snack. :-S
That is tough with the kids. I’d just focus on the stuff you can control and not stress too much about the rest. Kids are very resilient.
Calcium supplements raise cardiovascular disease (arteries stiffen with more calcium) according to this recent study:
http://www.bmj.com/content/342/bmj.d2040
Darya,
If you aren’t aware of Westin A. Price, you can read a lot of his research into the diets of long-living, healthy indigenous tribes at http://westonaprice.org/.
I have drank raw dairy my entire life and absolutely love it. Like you mentioned everybody has to figure out what works for their individual body. I just have to disagree that raw milk is dangerous, it is utterly untrue. However, milk shouldn’t be transported long distances. It is a living, delicate product and should be delivered locally or picked up within a day or two of the milking. Having a good relationship with the farmer will ensure cleanliness as well create supportive local communities.
I can imagine with the politics that influence the milk industry, data is conflicting and confusing, but it really doesn’t have to be. The majority of what Americans eat is processed foods, which mess up the body.
Emily
Thanks for writing Emily. I’m very familiar with Weston Price. It’s awesome that you’re enjoying raw milk, and I agree that it can be safe. But there has been a huge increase in problems associated with raw milk, especially in the last 2 years, and people should be aware that they need to be careful about their sources. That was my only point.
Cheers,
Darya
What about goat milk? I’ve read that goat milk has the closest genetic makeup to human milk, it does not contain lactose so it’s easier to digest, and it doesn’t have the same high hormone levels as cow’s because, while cows are milked through pregnancy (which lasts 9 months) and have a short milking period afterwards, goats only have a 5 month pregnancy and produce milk for 2 years after their pregnancy.
I’m currently trying to limit my dairy-type products to goat milk/cheese and coconut milk. Thoughts?
Thanks!
Yeah, I’d say that because of how it is produced on smaller farmers, goat milk is a lot less scary than cow’s milk.
Am very familiar with the relationship between osteoporosis and dairy. Was a critical care nurse for 20 years and used to reading good studies. Am SO surprised you didn’t mention the China Study and the studies that reproduced the data. For the most part I heard you say “the data’s all over the place”.
Great notes!, what products would you use to substitute milk? I only take it with cereal (usually quite big amount) and coffee (1 a day).
Concerning Vit D:
Due to a variety of factors, I don’t get much sunlight in my life, so I thought, hmm, maybe I should be taking a supplement too, why not research this… but did I hear you say you take 4000 IU of it? In looking for the recommended dose for vit D (so I don’t get a supplement that has too much in it), everything I’m reading says 600 IU (webMD, mayoclinic). Why do you take so much and is it really not toxic?
The current recommendations are very out of date, and there is much debate about changing it. 1000-4000 IU is safe for sure. I vary mine depending on the season and sun exposure, and average about 2000 IU. I wouldn’t exceed 10,000 IU. Make sure it’s vitamin D3.
Thanks for the speedy reply 🙂
Hi Darya, great post and resources.
A couple of worthy mentions on the bone health debate with relevant studies which highlight the need of supplementing with caution and safety, with a synergistic approach.
Vitamin K.
Ensure you have adequate vitamin K, specifically K2 when supplementing with calcium to prevent coronary artery calcification. Here is an article which you will find useful: http://www.riohealth.co.uk/uploaded/documents/VitaminD.pdf Vitamin K influences the level of osteocalcin in the bone-forming cells and, thus, the rate of mineralization of bone.
* Adams J, Pepping J. Vitamin K in the treatment and prevention of osteoporosis and arterial calcification. 2005. Am J Health Syst Pharm 62(15):1574-81.
Vitamin D
Vitamin D enhances both calcium absorption in the small intestine and calcium utilization in bone formation. Without sufficient vitamin D, bones can become thin, brittle, or misshapen. It also influences the utilization of phosphorus, another mineral that is important for the bone remodeling process.
* Shearer MJ. The roles of vitamins D and K in bone health and osteopo- rosis prevention. 1997. Proc Nutr Soc 56(3):915-937.
* Gennari C. Calcium and vitamin D nutrition and bone disease of the elderly. 2001. Public Health Nutr 4(2B):547-59.
* Food and Nutrition Board, Institute of Medicine. Calcium. Dietary Reference Intakes: Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. 1997. Washington, D.C.: National Academy Press; 71-145.
Magnesium
An essential nutrient that plays a key role in the bone remodeling process, magnesium helps in the development and maintenance of bones and teeth. Approximately 60–70 percent of the magnesium in the body is found in the skeleton, and higher intakes have been associated with higher levels of bone mineral density. Supplementing is especially important for middle-aged or older adults who are not receiving sufficient amounts of magnesium from their diet.
Boron
Boron reduces calcium excretion and increases deposition of calcium in the bone.
*Nieves JW. Osteoporosis: the role of micronutrients. 2005. Am J Clin Nutr 81(5):1232S-9S.
Whenever going down the supplement route, I always ensure the above nutrients are covered.
Food for thought!
Thanks,
Jess