Stearic acid improves mitochondrial health and function

The fatty acid stearic acid increases the performance of our cellular powerhouses, the mitochondria inside cells. They are responsible for cellular energy, metabolism (fats, amino acids), and health (apoptosis; normal cell death). Not only our energy levels, but general health and longevity depend on cellular mitochondrial health.

Now a signaling effect of stearic acid has been shown to improve mitochondrial health in an animal model, with the same mechanism existing in people suggesting that it may have benefits in humans, as well. Mitochondrial defects are associated with various disorders affecting nerves, muscles, and brain, including neurodegenerative and aging problems.

Stearic acid is a fatty acid normally found in our diet, and it has been proven to NOT contribute to heart disease like other saturated fats. Much has been written about stearic acid, including numerous unbalanced accounts of it being unhealthy in minute amounts based largely on unrepresentative test tube studies, despite robust evidence that it is a common dietary fat consumed in significant quantities (up to 10 grams a day) as part of a healthy diet and a constituent of virtually all natural fats and oils that has shown positive benefits in numerous human studies.

http://medicalxpress.com/news/2015-07-fatty-acid-cellular-powerhouse.html

http://www.nature.com/nature/journal/v525/n7567/full/nature14601.html

http://honestnutrition.blogspot.com/2008/04/myths-about-stearate-risks.html

Myths about stearate "risks"

There are some common myths about stearates. Please allow me to describe the stearates that are utilized in making nutritional supplements, and how they are used, and other pertinent information on their safety and use in dietary supplements and foods.

Stearic acid is converted into oleic acid in vivo, so becomes a similar fat as is found in olive oil. In fact, one jumbo olive is estimated to contain 13 milligrams (.013 g) of stearic acid (C 18:0), many times more than is used in any pills or capsules. http://www.oliveoilsource.com/olivechemistry.htm

“Stearic acid is well absorbed by the gut and is transported in chylomicrons and remnant particles before being picked up by the liver. Once there, an interesting paradox occurs in that excess stearic acid is simply converted to the 18-carbon monounsaturated oleic acid via a desaturase enzyme in the liver (3) and then recirculates in lipoprotein complexes as oleic acid, which is not hypercholesterolemic. Thus, conversion to oleic acid may explain why stearic acid does not elevate plasma cholesterol concentrations.”

Supplement manufacturers rarely use more than 2% and usually far less or none at all, even though common foods contain much more (beef fat is 19% stearates; cocoa butter is 30%) and stearates are Generally Recognized As Safe (GRAS). It is unusual that they would use more than1-2% in a product, and when they do use them it is typically used in microgram amounts to help process only sticky or non-flowing materials.

The hydrogenation process is not used for the stearic acid in the magnesium stearate. It is possible to convert oleic acid to stearic acid by hydrogenation, but that is not necessary (or desirable) with sources that are already high in stearic acid and low in oleic acid. Lipase-catalyzed interesterification is a viable alternative to hydrogenation these days, for example, if one were to want to convert oleic acid to stearic acid.

No consumer should be inhaling stearates, so the issue of being hazardous is also a bogus one that should be relegated to producers and manufacturers. You can actually say far worse about the hazards of inhaled enzymes, for example. Most supplement materials have MSDS handling sheets that mention the dangers of inhalation. There are no known significant dangers from normal oral consumption or skin contact.

The reason dietary stearic acid is considered benign is based on its failure to elevate plasma cholesterol concentrations (1, 2). Foods naturally rich in stearic acid and other saturated fats include: Red meat (beef, pork, or lamb) High-fat dairy products (whole milk, cheese, butter, and ice cream) Chocolate, Lard, Coconut oil.

For more on stearates, please see: http://www.nowfoods.com/index.php?action=itemdetail&item_id=93528.

Also, the accompanying chart has the percentages of stearic acid in common foods (4). As you can see, stearic acid is far more abundant in olive oil, butter and lard than in dietary supplements as a percentage, with grams in foods and micrograms (possible low milligram levels) in only certain dietary supplements:

A common reference is to a 1990 study in the journal Immunology, but the reference is hardly satisfactory as a demonstration of the alleged harm of stearic acid. This was a test tube study that has not been replicated in living beings, with an artificial situation providing high concentrations of stearic acid exposed to isolated immune cells for hours at a time. It was actually done as a way to investigate whether prolonged high dose stearic acid administration could possibly be used to suppress the immune system for an autoimmune disease treatment. (5) It was definitely NOT a demonstration that this would work the same way with dietary supplements or with foods containing stearic acid. The effect was dose- and time- dependent; with a sustained, prolonged exposure over an 8-hour period that is impossible to replicate in the living human body. For a test tube study, it would first have to be shown that the mechanism was valid in vivo before it could be considered reasonable to extrapolate it to actual living organsms. This study did not do that; nor has any other, to date.

In conclusion, since this mechanism has not been proven in humans or had additional verifying studies, since humans have much more complex metabolic activities, since stearic acid is easily absorbed from the gut and then readily converted to oleic acid in the liver (in vivo), since manufacturers use far less than this study gave and with only a brief exposure, and since people get stearic acid in many common oil-containing foods in far greater amounts than are used in dietary supplements, I conclude that the fears about the use of stearates in dietary supplements are unproven and speculative at best, slanderous and unscientific at worst.

For a second opinion, please see the website of Ray Sahelian, M.D. at http://www.raysahelian.com/magnesiumstearate.html

REFERENCES
1. Yu S, Derr J, Etherton TD, Kris-Etherton PM. Plasma cholesterolpredictive equations demonstrate that stearic acid is neutral and monounsaturated fatty acids are hypocholesterolemic. Am J Clin Nutr 1995;61:1129–39.
2. Aro A, Jauhiainen M, Partanen R, Salminen I, Mutanen M. Stearic acid, trans fatty acids, and dairy fat: effects on serum and lipoprotein lipids, apolipoproteins, lipoprotein(a), and lipid transfer proteins in healthy subjects. Am J Clin Nutr 1997;65:1419–26.
3. Lin DS, Connor WE, Spenler CW. Are dietary saturated, monounsaturated, and polyunsaturated fatty acids deposited to the same extent in adipose tissue of rabbits? Am J Clin Nutr 1993;58:174–9.
4. http://www.nebeef.org/post/lfu/Stearic_Acid.pdf
5. Tebby PW, Buttke TM. Molecular Basis for the Immunosuppresive Action of stearic acid on T Cells. Immunology. 1990;70:379-384.

Vegetarian Dietary Supplements

Vegetarian Dietary Supplements By Neil E. Levin, CCN, DANLA 

Most dietary supplement manufacturers use the term “vegetarian” to include “vegan” and one even recently began adding the word “vegan” to their product labels to assure users that they are offering products without any animal-derived ingredients. 

However, some products are always animal-derived. These include: Fish Oil, Gelatin, Chondroitin sulfate, Vitamin D3, Hydroxyapatite calcium, collagen, Chitosan fiber, Celadrin oils, Pancreatin, Pepsin, Trypsin, Chymotrypsin, ImmunoLin® immunoglobulin complex, Bovine or Shark Cartilage, Sea Cucumber, Sea Mussel, Liver products that contain actual liver tissue, IGF-1 deer velvet and glandular substances. Other products are sourced from milk or dairy products: Whey proteins, Casein, Colostrum, and MicroLactin™. 

Probiotics are typically made by growing bacterial cultures on dairy products. Some strains are weaned off of the dairy and are harvested with only traces of dairy protein (casein) remaining. The growers will not certify these probiotics as non-dairy, dairy free or vegetarian, but tell us that most manufacturers do label their probiotics with these claims. 

 Yet another class of products is considered non-vegan because of the honeybee source: Bee Pollen (collected by, but not made by, bees), Honey, and Royal Jelly. This is an interesting distinction because bees also are essential for pollination and increasing the yields of many fruits, vegetables and nuts eaten by vegans. 

 Some dietary supplements may come from either animal or vegetarian sources. One example is Glucosamine, a structural component of the joints normally extracted from clam shells. While most glucosamine products are from shellfish, there is a vegetarian version that can be combined with MSM to provide the sulfur needed for the body to turn glucosamine hydrochloride into glucosamine sulfate. This vegetarian form is obtained by fermentation. Still, the vast majority of glucosamine supplements on the market use the shellfish-derived form, including the supplement called NAG (N-acetyl glucosamine) that is used for GI health and as an “essential sugar”. 

HA (Hyaluronic acid), used to aid the moisture-holding, cushioning ability of the joints, is often extracted from poultry. There is a vegetarian form, produced by fermentation. 

The digestive enzymes amylase, lipase and protease are found in the animal product called Pancreatin. But there are also plant-derived enzymes. These plant enzymes include amylase, lipase and protease, but they work in a much wider pH range over a longer period of time than Pancreatin enzymes, which work only in the alkaline pH of the intestine. Beginning digestion of fats and carbohydrates in the stomach can improve even good digestion. 

Look for vegetable-derived excipients such as magnesium stearate, stearic acid, rice flour, maltodextrin, etc. The stearates can also be sourced from beef fat, so it pays to check! 

Gelatin has long been the substance that capsules are made from. Originally, all capsules were gelatin caps. Two-piece capsules are normally derived from beef and pork gelatin, whereas the gelatin in softgel capsules is normally exclusively derived from beef gelatin. More recently, Vcaps have become a preferred form. In the past ten years or so there have also been Vcaps® as a vegetarian alternative, made from vegetable cellulose. A newer version, called NP Caps or Vcaps®, is made from non-GMO corn polysaccharides. Some considerations in the choice of which type of capsule to use revolve around the technical differences in filling and storing gelatin versus Vcaps. These differences include different moisture barrier characteristics, different transparency of the capsule, different speeds at which these capsules can be filled on our production line, whether only vegetarian materials are used in the formula, etc. There is a way to fill two-piece vegetarian capsules with liquids, but the resulting product has an air bubble in the capsule and is typically a much lower dose and much more expensive than softgels made from gelatin. So this form has not been fast to catch on. 

One softgel that is available in a vegetarian capsule is Vegetarian E-400. But this form is not yet widely used for other supplements. Most vitamin E softgel caps are primarily made from beef gelatin. There is often hidden gelatin (often from fish) in beta-carotene, lutein, and other oil-based ingredients. Companies should scrupulously ensure that they use only non-gelatin bases for ingredients in their vegetarian/vegan products. It is unknown how aware vegetarian shoppers are of this hidden, tricky issue. Often, these problems apply to carotene or lutein in multiple vitamin formulas, which could get mislabeled as “vegetarian” if a manufacturer does not take the care to pay attention to these important ingredient details. 

Other common names for animal-derived ingredients include Porcine (from pork/pigs), Bovine (beef/cows), and Ovine (lamb/sheep). Consumers can contact the vitamin companies directly to ask about their vegetarian products. Knowledgeable health food store personnel, especially certified nutritionists or vitamin specialists familiar with their inventory, can be very helpful. Often an employee at a store who is a vegetarian will be familiar with the products from that perspective. And please be aware that the availability of vegetarian options is always increasing! 

In many cases, there is no functional difference between differently sourced ingredients; for example, glucosamine or HA. It is only when the actual form of the active constituent is physically/chemically different that a difference in the actions and efficacy of a substance is likely. There may be some differences in efficacy between plant and animal sourced ingredients, as we have seen with plant enzymes having a wider range of action than the same types of animal enzymes. 

Fish oil is far more effective than flax oil in terms of providing the maximum EPA and DHA per serving. Flax oil contains ALA, which is poorly converted into EPA and DHA (5-10% and 2-5%, respectively). 

One good example is melatonin, usually sold as a synthesized ‘nature-identical’ molecule. It can also be extracted from the pineal gland, but considerations of Mad Cow Disease and animal ingredient issues have pretty much sunk that source, which was the original form available. While glandulars may have other, subtle effects on the body, the actual melatonin produced either way is the exact same molecule with identical actions. 

Phosphatidyl Serine (PS) is normally produced from lecithin, with additional sources more rarely available (bovine, egg). Most of the research is on the soy-derived source, so its efficacy should not be in question. In the human body PS is synthesized from phosphatidylcholine; a similar process is used commercially to produce PS.