Monday, February 15, 2016

"Nitrate Free"

So a newbie at The Salt Cured Pig was excited about a "nitrate free" jerky product she had found. The community quickly set her straight, but was still lacking numerical data, so I went and found some.

Unfortunately the USDA Nutrient Database does not track Nitrates/Nitrites, so we had to look to other sources.

The content of nitrates and nitrites in fruits, vegetables and other foodstuffs

lettuce, frozen spinach, fennel, radishes, parsley: >1000 mg of KNO3/kg
lettuce: 3500 mg/kg
carrots, celery, leeks and frozen French bean: 24 - 800 mg KNO3/kg
strawberries 58.7 mg KNO3/kg
fruit-vegetable juice: 355.30 to 584.53 mg KNO3/kg

The exact numbers were highly variable between samples, often with an order of magnitude difference. The soil conditions, fertilizer, maturity of the plant, etc. affect the levels.

Meanwhile, cured meats are federally limited to 200 ppm of nitrite (same as mg/kg in this context)

So when you turn down that bacon in favor of a "healthier" salad, you're likely consuming seventeen times as much nitrogenous compounds.

Now there is an issue that we're talking nitrates and nitrites, but nitrates do convert to nitrite both in storage and in the body. "Nitrate free" cured meats work by converting the natural nitrates in celery juice or other sources into nitrate, and the same can occur in your own body.

Meanwhile, the nitrite in those cured meats makes them resistant to breakdown by bacteria and resistant to contamination by the deadly botulism toxin, making your meat safer as well as more flavorful.

Yes, excessive Nitrites and Nitrates are toxic, yes, under some conditions they can turn into carcinogenic compounds in your body, but they are a normal part of natural food.  They have a very long standing history as a food additive, much longer than most of the additives in your average can/box from the store.  The amounts included in cured meats are nothing to worry about.

Thursday, February 11, 2016

Prebiotics: Putting the cart before the horse

Some people recommend that when fixing your internal microbiome, you need to eat specific foods to feed your wee beasties.  But in a healthy gut, bacterial profiles change over time depending on diet.  If I specifically cultivate microbes that eat food x, that might not help me eat food y.  Diet consistency matters after introduction of the correct strains more than which particular foods I eat.  The human diet is vastly diverse, and for the most part we get along at least well enough to reproduce and have a culture on all of them.  I've not yet seen evidence that eating prebiotics leads to better health outcomes, although it's very obvious that replacing pathogenic bacteria with symbiants produces drastic health benefits.

If we're focusing on prebiotics which help us grow probiotics that help us digest prebiotics, are we getting the cart before the horse?  Better to cultivate bacteria that love the diet we already eat (or want to eat).  Maybe take a consistent quarter of roll each day if you're taking probiotics to improve your wheat tolerance, slowly increasing intake as the microbes take hold?

Thursday, February 4, 2016

Probiotics to Try

Most probiotics contain multiple strains of Lactobacillus and Bifidobacterium, they advertise some 30 strains per pill, but they are pretty much all the same species.  I found a few brands with unusual strains that might work where others failed:

Someone gave me a lead on the first two of that set, I found AOR when doing a broader search for soil based probiotics.  I found this other post that also found that to be a conclusive list: