The Healthy Sugar Substitute You’ve Likely Never Heard About
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The Healthy Sugar Substitute You’ve Likely Never Heard About

STORY AT-A-GLANCE This article was previously published February 4, 2019, and has been updated with new information.
The Healthy Sugar Substitute You’ve Likely Never Heard About

As you probably know, infiammation and oxidative damage are primary drivers of most chronic diseases. What you may not be aware of is the importance of nicotinamide adenine dinucleotide phosphate hydrogen (NADPH) and NADPH oxidase, typically abbreviated as NOX, in these processes. In a recent paper, James DiNicolantonio, who co-wrote my book, "Superfuel," details the importance of collagen and glycine for the inhibition of NADPH breakdown. DiNicolantonio, also co-wrote a book with Jason Fung, called " The Longevity Solution ," which takes a deep dive into how collagen and glycine may help promote longevity. Without suficient amounts of NADPH, your body cannot recharge glutathione once it becomes oxidized. As you know, glutathione is crucial for detoxification, and both collagen and glycine effectively raises your NADPH level by inhibiting the enzyme that breaks down NADPH.


Considering the importance of NADPH for optimal health and chronic disease prevention, this is really important information that could make a big difference for many, as collagen and glycine are both easily obtainable and relatively inexpensive. But before we delve into the specifics of how glycine affects NOX and NADPH, let's review some of the basics.

What Is NADPH and NOX?

NADPH is the reduced form of NADP+. It's a reducing agent necessary for anabolic reactions, including lipid and nucleic acid synthesis. NOX is an enzyme complex that is bound to the cellular membrane, facing the extracellular space. Inhibiting NOX is a useful strategy to increase NADPH and your cells' ability to counter oxidative stress. NOX is activated in a large number of pathological conditions that generate a great deal of oxidative stress. In fact, according to DiNicolantonio, NOX overactivity appears to play a significant role in a wide range of health conditions, including but not limited to: Vascular diseases and vascular complications of other diseases (diabetes, kidney failure, blindness and heart disease for example) Insulin resistance Neurodegenerative disorders such as Alzheimer's and Parkinson's Cancer Glaucoma Pulmonary fibrosis Erectile dysfunction As explained by DiNicolantonio in a paper detailing bilirubin's ability to inhibit NOX complexes and downregulate NOX activity, and the benefits of spirulina for this purpose:

"Activation of NADPH oxidase [NOX] is a key mediator of proinfiammatorymicroglial activation … Oxidative stress in adipocytes, stemming largely fromNADPH oxidase activity, appears to play a key role in the induction of insulinresistance and the skewing of adipokine and cytokine production inhypertrophied adipocytes."

Six Ways to Inhibit NOX and Increase NADPH

NADPH is used as a reductive reservoir of electrons for antioxidants that become oxidized and nonfunctional. NADPH is also necessary to make your steroid hormones and fats. When you have low levels, you are in deep trouble. That said, NADPH appears to be a biological molecule that can be helpful or harmful depending on how much of it is circulating at the time, so it needs to be carefully regulated by your body. For example, although NOX lowers NADPH, it also plays an important role in helping your immune system fight bacteria, and helps your T-cells to function properly. It follows then, that preventing many chronic diseases would require finding a means of inhibiting or modulating NOX. The good news is there are several ways of doing this that are neither costly nor cumbersome, including the following: • Niacinamide — Taking nicotinamide can also help increase your NADPH level. • Lowering your glucose level and avoiding fructose — Excess glucose is converted to fructose and lowers your NAD+, so keeping your glucose low and avoiding fructose is part of the equation. • Nutritional ketosis — Ketone metabolism increases the negative redox potential of your family of NAD coenzyme redox molecules, which helps control oxidative


damage by increasing NADPH and promoting transcription of enzymes of the antioxidant pathways though activation of FOXO3a. • Glycine and collagen — As detailed in the featured paper, glycine and collagen (which also contains glycine) also have NOX-inhibiting effects, thereby raising your NADPH level. The way glycine inhibits NOX superoxide production is by bringing chloride into the cell, which reduces the cell's ability to push out chloride ions (since it's pushing against a higher chloride gradient). Chloride ions are required to bring in electrons to generate superoxide, so by minimizing chloride ions, glycine helps minimize oxidative stress.

Glycine Upregulates NADPH and Has Anticancer Activity

According to the featured paper, supplemental glycine may be useful for the "prevention and control of atherosclerosis, heart failure, angiogenesis associated with cancer or retinal disorders and a range of infiammation-driven syndromes, including metabolic syndrome." Glycine may also be an excellent complement to spirulina, as both suppress NOX. The featured paper also details the anti-angiogenic activity of glycine, which refers to its ability to inhibit the growth of blood vessels that feed tumors. Animal studies, for example, have shown mice with cancer that are fed glycine exhibit suppressed angiogenesis and tumor growth, even though glycine does not affect the proliferation of cancer cells directly. DiNicolantonio and his team hypothesize that one of the reasons for this antitumor effect has to do with the fact that glycine increases the chloride level in endothelial cells, thereby limiting the export of chloride from the endosome. This in turn inhibits activation of NOX, which has pro-angiogenic activity (meaning it promotes the growth of blood vessels to tumors). According to this paper:

"This might explain the well-documented anti-angiogenic effects of boostingplasma glycine to the high physiological range. The possibility thatsupplemental glycine may have clinical utility as an anti-angiogenic agent forcancer control merits evaluation — albeit the concurrent effects of glycine onanticancer immune surveillance should be considered.The anti-angiogenic effects of glycine might also find application in preventionor treatment of the choroidal neovascularization associated with diabeticretinopathy and age-related macular degeneration. It will be of interest todetermine whether retinal pigment epithelium expresses glycine receptors."

Glycine Also Supports Vascular Health

NOX activation also plays an important role in heart disease, and by inhibiting NOX (which raises NADPH), glycine may also offer protection against cardiovascular problems. DiNicolantonio and his team explain:

"The role of [NOX] complex activation in promoting pro-infiammatory behaviorof vascular endothelium is well documented; in particular, endothelial [NOX]plays a mediating role in atherogenesis. It is reasonable to postulate that a highproportion of this [NOX] activation occurs in endosomes, and is susceptible tomodulation by cytosolic chloride level.If so, then we could expect elevated plasma glycine, via stimulation of glycine-activated chloride channels, to suppress endothelial infiammation by opposingendosomal [NOX] activity. Moreover, the hyperpolarizing impact of glycine onendothelium might also promote vascular health by boosting calcium infiux intoendothelial cells, thereby enhancing the protective activity of the endothelialnitric oxide synthase.It also seems not unlikely, given the documented impact of glycine onmacrophages, that supplemental glycine could oppose atherogenesis andplaque instability via anti-infiammatory effects on intimal macrophages andfoam cells … Glycine may also provide antioxidant protection to heart muscle …Moreover, in mice subjected to cardiac pressure overload or angiotensin IIadministration, glycine supplementation lessens the ensuing cardiachypertrophy."

Glycine Supplementation May Improve Your Health

Considering how important it is to minimize infiammation and oxidative stress, and the role NOX and NADPH play in these processes, glycine supplementation holds great promise as a simple and inexpensive aid. I personally take one-quarter teaspoon (about 1 gram) twice a day. Since glycine is mildly sweet, you could even use it as a healthy sugar substitute in tea or coffee. As noted by DiNicolantonio, "Intakes as high as 31 grams daily have proved safe. It is therefore ideal for incorporation into functional foods and beverages." The paper also cites a number of studies showing glycine supplementation may be beneficial for the prevention and/or treatment of: Metabolic syndrome — As noted in DiNicolantonio's paper, "In humans with metabolic syndrome supplemented with 15 grams glycine per day (5 grams thrice daily), plasma markers of oxidative stress declined by 25 percent relative to placebo" Complications from diabetes Alcoholic and nonalcoholic liver disorders Cardiac hypertrophy Glycine supplementation may also: Help improve sleep Maintain cartilage integrity


Moderate the adverse metabolic effects of high-fructose diet Boost glutathione synthesis, especially when used in combination with a N- acetylcysteine (NAC) supplement Improve oxidant-scavenging activity by converting to pyruvate, which is a direct scavenger of hydrogen peroxide and inhibits formation of age-advanced glycation end-products Have antioxidant effects by increasing synthesis of heme and bilirubin, although evidence of this is still lacking, and the effect is likely to be modest Help detoxify glyphosate — Glyphosate is an analog of the amino acid glycine. It attaches in places where you need glycine. Importantly, glycine is used up in the detoxification process, hence many of us do not have enough glycine for eficient detoxification. To eliminate glyphosate, you need to saturate your body with glycine. Dr. Dietrich Klinghardt, who is a specialist in metal toxicity and its connection to chronic infections, recommends taking 1 teaspoon (4 grams) of glycine powder twice a day for a few weeks and then lowering the dose to one-fourth teaspoon (1 gram) twice a day. This forces the glyphosate out of your system, allowing it to be eliminated through your urine While glycine powder is an inexpensive option, collagen is another alternative that is extremely rich in glycine. If going this route, I recommend looking for organic grass fed collagen.

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