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0220-Chocolade-Blog

Chocolate: What You Need to Know

The health benefits of chocolate have been known for more than a thousand years. Studies link its consumption to improved cardiovascular health, increased cognition, enhanced blood flow, and even anti-aging benefits. All good reasons to eat more, right? Before you use this info to justify your intake, learn what gives chocolate its health promoting properties and how the benefits change depending on the type you consume.

It’s All About the Cocoa Polyphenols

Chocolate is made up of two components: cocoa solids (or powder) and cocoa butter. It is the cocoa powder in chocolate that contains polyphenols known for their antioxidant and anti-inflammatory properties. While a variety of polyphenols exist in cocoa, the primary polyphenols are called flavanols. It is the polyphenols in chocolate that are responsible for its health promoting properties.

Forest to Table: Going From Cacao to Cocoa to Chocolate

It’s easy to get confused with all the different descriptors for chocolate from white, milk, dark, to cocoa, cacao, and cacao nibs. Here is a little history on the background of chocolate and how it gets from the forest to consumption.

Cacao, pronounced 'ca-cow,' is believed to be a misspelling of 'cocoa' by early English traders.1 Cacao comes from the cacao tree, also known as Theobroma Cacao. Cacao trees grow only in tropical climates and take about five years to become strong enough to produce pods which contain cocoa beans that can be turned into cocoa. The tree flowers the entire year and of the thousands of flowers it may only have 40 or so that turn into cacao pods. After 5-6 months the pods are ready to be harvested. Depending on the region, harvests may take place twice a year. Once the seeds (i.e., cacao beans) have been extracted from the pods, they go through a process called fermentation which takes about 5-7 days and allows the aromatic properties of cacao to develop. Unfortunately, many of the polyphenols are destroyed in this process.  From here the beans are laid out and left to dry in the sun for about 6 days before going off to be processed.2

During processing, cacao beans are sorted, cleaned and dried. The shells are then removed (winnowed) to produce cacao nibs which are roasted to further enhance flavor and aroma 3. These are then ground into a liquid mass called chocolate liquor (no alcohol here). Chocolate liquor can be made directly into chocolate or further refined through a pressing process to extract the cocoa butter from the cocoa solids 2,3. The cocoa solids can be pulverized into cocoa powder, which retain the polyphenol content in dry form.3 The cocoa butter can then be added back to the chocolate liquor to make chocolate. The amounts of chocolate liquor, cocoa butter and cocoa solids differentiates the type of chocolate to be made 2.

Factors Impacting Total Polyphenol Content

Fermentation of the cacao bean comes with a significant loss of the polyphenol content, and a corresponding reduction of its considerable health benefits. The type of bean, where it is grown, and other factors like temperature, and potentially further alkali treatment of the cocoa powder, all play a role in determining the levels polyphenols in the final product4.

Alkalization is the process of adding potassium carbonate to the cocoa powder to reduce the levels of polyphenols to improve the taste, also known as “Dutch refining.” The more treated the cocoa powder, the greater the loss of polyphenols.

In addition to processing, the levels of polyphenols in cacao beans are highly dependent upon country of origin. It has been shown that a three-fold difference can exist in the range of total polyphenol content pending where the cacao trees are grown.4 Despite 30% of the worlds’ cacao being produced in the Ivory Coast, the raw cacao plants with the highest levels of polyphenols are actually grown in the highlands of Ecuador.5

Have You Seen Our New Cocoa Polyphenols? Learn More

What to Know Before Eating Chocolate

Not all chocolate is created equal. Some have a taste for sweet chocolate (either white or milk chocolate) that's high in fat and sugar. Others prefer a more bitter chocolate (such as dark chocolate) with a stronger and more sharp taste.  Dark chocolate is high in cocoa solids (powder) and contains the highest levels of polyphenols of any chocolate. The inclusion of milk as an ingredient differentiates milk chocolate from dark chocolate. Pure white chocolate is 100% cocoa butter, essentially pure fat. While it may melt and your mouth, it’s devoid of any cocoa polyphenols.

Manufacturers add more ingredients like milk and sugar to make chocolate more appealing. As those extra ingredients pile up, the percentage of “cocoa” in the final product goes down. The typical chocolate candy bar has about 10% “cocoa” and is high in sugar and saturated fat.

While higher in cocoa polyphenols, consuming dark chocolate on a regular basis isn’t the most ideal. Some varieties contain 7 grams of saturated fat, supplying more than 35% of your daily intake, as well as a lot of sugar to increase the hedonic response (i.e., make it taste better). Furthermore there is virtually no protein to help stabilize blood sugar levels, which negates many of the health benefits of the remaining cocoa polyphenols.

Top 4 Chocolates with the Most Polyphenols:

#1: Cacao NibsCacaoNibs-00

Nibs are considered chocolate in its purest form as they are simply crushed cacao beans. They are rich in polyphenols, fat, minerals (including the heavy metal, cadmium) and fiber and have a crunch like chocolate chips without the added sugar.

 

#2: Cocoa PowderCacaoPowder

Once the fat is removed from the cacao nibs and minimally processed into ground cocoa powder, it is higher in polyphenols on a per gram basis. This also makes it richer in naturally occurring heavy metals requiring you to limit the amount you consume.

 

#3: Dark ChocolateChoc

Primarily made up of cocoa powder, cocoa butter and added sugar this not-so-naughty treat provides adequate amounts of polyphenols. Moderation is still key here with the fat and mineral content.

 

#4: Milk Chocolatemilk-chocolate02

The addition of milk and greater amounts of sugar significantly dilute the levels of polyphenols making this a not-so-great choice. The bright side is that compared the other choices its lower in naturally occurring metals.

 

 

Worst Chocolate for Polyphenols:

White ChocolateWhite-Chocolate01

Zero, zilch, nada. Not a single cocoa polyphenol in this full fat, sugar rich, cocoa butter treat.

 

Why Zone Cocoa Polyphenols

To reap the health benefits that come with cocoa polyphenols requires higher levels of consumption. One of the major considerations when consuming cacao nibs and cocoa powders is that they naturally contain cadmium, a heavy metal. The problem is that higher intakes of cocoa polyphenols may come with high intakes of heavy metals.

What makes Zone cocoa polyphenols different is the processing innovation we’ve developed to increase the amount of polyphenols we can supply in a serving without the heavy metal contamination regularly found in cocoa products. We developed a proprietary cocoa extract using a unique purification process that allowed us to retain the maximum polyphenol content while minimizing the level of heavy metals. This process takes place once the cocoa powder is produced from the chocolate liquor. Our extraction technique led to the creation of our food products (ZoneRx bars and shakes) as well as our supplements (CacaoRx and CacaoRx Plus) allowing individuals to gain the greatest benefits of cocoa in a high purity, high potency format.

A New Health Benefit of Cocoa – Improved Gut Health

One of the newer areas of emerging research is the role of cocoa polyphenols in gut health. The gut has one of the highest population of microbes (anything too small to be seen by the human eye like bacteria and viruses). Some of these microbes can be a significant source of inflammation, which can impact both the blood and the brain. Due to their anti-inflammatory properties, it is likely that many of the health benefits of cocoa polyphenols come from their ability to improve gut health. The more cocoa polyphenols you consume, the healthier your gut becomes. This is why knowing what’s in your chocolate not only impacts gut health, but the rest of your body too.

Have You Seen Our New Cocoa Polyphenols?
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References:

  1. Lebovitz, David. The Great Book of Chocolate: The Chocolate Lover's Guide, with Recipes. Berkeley: Ten Speed, 2004. Print.
  2. From cocoa to chocolate. Available at:https://www.barry-callebaut.com/en-US/group/cocoa-chocolate-expertise/cocoa-chocolate.  Accessed: February 6, 2020.
  3. Processing Cocoa. Available at: https://www.icco.org/about-cocoa/processing-cocoa.html.  Accessed: February 6, 2020.
  4. Coffee and Cocoa. Available at: http://phenol-explorer.eu/reports/43.  February 6, 2020.
  5. Top 10 Cocoa Producing Countries. World Atlas. http://www.worldatlas.com/articles/top-10-cocoa-producing-countries.html.

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062524---Keto-Blog

Ketogenic Diets and Aging

Chances are, you or someone you know has tried the keto diet at some point in time. This high-fat, very low-carbohydrate eating plan appeals to many due to its promise of rapid weight loss. In this blog, Dr. Sears explores some of the latest scientific findings on ketogenic diets and provides caution before hopping on this trend. What is a Ketogenic Diet? The ketogenic diet is a high-fat, very low-carbohydrate eating plan. This significant reduction in carbohydrates to induce a metabolic state is called ketosis. This only occurs when there is not enough carbohydrates in your liver to completely convert fatty acids to carbon dioxide and water. The normal conversion generates the chemical energy (ATP) that keeps us alive. In the absence of ketosis, each fatty acid generates 108 molecules of ATP when oxidized in the mitochondria. Ketone bodies make less ATP when they are metabolized by mitochondria. How much less? About five times less. This is like switching the gasoline in your car from high-octane fuel to low octane fuel as ketone bodies increase in the blood. Furthermore, contrary to popular belief, ketones are not an ideal energy source for the brain, as glucose remains the preferred fuel for ATP production in brain cells. Lack of blood glucose is a highly stressful situation for the brain. This is why the body secretes the stress hormone cortisol from the adrenal glands during ketosis to breakdown protein and convert the amino acids into glucose for the brain. This explains why even under complete starvation for 38 days, the blood glucose levels never dropped below 68 mg/dL. This is still considered as a normal blood sugar level. Where did this blood glucose come from if there was none in the diet for 38 days? The answer is neo-glucogenesis primarily using lean body mass. Ketogenic Diets Pros and Cons Interest in ketogenic diets rises and falls about every 20 years. They’re very low-carbohydrate diets that claim that carbohydrates make you fat and keep you fat. This is simply not true. It is not carbohydrates per se but a disrupted metabolism that makes you fat. To be more specific, it is the inhibition of AMPK, the master regulator of your metabolism that makes you fat. Why? As AMPK activity increases, you burn stored fat faster. Frankly, I’ve always been amazed by the re-emergence of ketogenic diets. Eighteen years ago, I published the premier clinical study demonstrating that, under equal calorie intake in which all the food was provided to the subjects for six weeks, the Zone Diet was better than a ketogenic diet in reducing total weight, excess body fat, and inflammation. Now, a recent study revealed some more very concerning findings about the long-term effects of ketogenic diets. This new study indicated that following a keto diet causes a rise in senescent cells, popularly known as “zombie cells.” Zombie Cells are damaged cells that no longer divide but don't die. That’s bad enough, but zombie cells continue spreading inflammation throughout the body. As the number of zombie cells increases in your body, they become a living nightmare. Why? Zombie cells accelerate aging because they cause the earlier development of many chronic diseases. In this study they found that zombie cells in the animals began to appear while they were on a ketogenic diet. The zombie cells then disappeared when researchers changed the diet to a “non-ketogenic diet” (i.e., the Zone diet). And when the animals were given a Keto diet again, the zombie cells reappeared. Notice a trend? If you want to hear more about this study you can listen to our recent podcast at Dr.Sears.com. Based on earlier blogs, this adds to the list of downsides for following a ketogenic diet versus the Zone Diet. PROS Rapid initial weight loss: This is primarily due to the loss of retained water from the glycogen stores in the liver, which is rapidly used up to maintain blood sugar levels. Since these glycogen stores in the liver contain significant levels of retained water, much of the initial weight loss is water rather than stored body fat. If your main goal is loss retained water, this can be seen as a benefit. Of course, going to a sauna would also work. Reduced hunger: Ketogenic diets are rich in protein. Any increase in protein intake can help reduce hunger. CONS Production of acetone: One of the ketone bodies produced during ketosis is acetone, which is also the main chemical in nail polish. Increased calcium loss: A ketogenic diet can lead to higher calcium loss from bones. Limited fat utilization: High levels of dietary fat reduce the likelihood of using stored body fat for energy unless you also significantly restrict calories. Reduced energy levels: The lack of ATP production on a ketogenic diet can lead to easier fatigue during mild exercise. Damage from cheat meals: After seven days on a keto diet, a single high-carb cheat meal can damage blood vessels. Lack of polyphenols: This makes it difficult to activate genes that optimize metabolism by improving mitochondrial efficiency in converting fat into ATP. No long-term weight loss advantage: Long-term studies show no difference in weight loss between a ketogenic diet and a low-fat, high-carb diet. No short-term metabolic advantage: Careful studies demonstrate that fat loss on a ketogenic diet is the same as on a low-fat, high-carb diet with the same caloric intake. Compromised gut health: A lack of fermentable fiber from carbohydrates can lead to poor gut health and an increased risk of developing a leaky gut, which can cause significant inflammation. Furthermore, short-chain fatty acids (SCFA) are the metabolic product of fermentable fiber. These SCFA are powerful epigenetic signaling agents that enhance gene transcription. Ketosis generates a different type of hydroxylated short fatty acid (3-hydroxyl butyrate, that has no effect on gene transcription. In addition, the lack of SCFA has significant negative consequences on the gut-brain axis. Cortisol build-up: To produce glucose for the brain, cortisol levels increase to breakdown protein to make sufficient glucose via neoglucogenesis. Excess cortisol can lead to insulin resistance that cause regain of some of initially loss body fat. In addition, increased cortisol levels cause a depressed immune system as well as destruction of memory cells in the hippocampus. The initial benefits of following the ketogenic diet result in some initial weight loss (primarily water weight rather than fat loss), long-term studies show no significant differences in overall weight loss. Now new findings show a ketogenic diet may lead to significant adverse health consequences by accelerating the formation of zombie cells. Call me crazy, but I feel the key to longevity and wellness comes down to better metabolic control instead of living in a constant state of ketosis. Following Metabolic Engineering® for a lifetime provides that pathway of losing body fat without ketosis. References 1. Johnston CS, Tjonn SL, Swan PD, White A, Hutchins H, and Sears B. “Ketogenic low-carbohydrate diets have no metabolic advantage over nonketogenic low-carbohydrate diets.” Am J Clin Nutr 2006 83:1055-61. 2. White AM, Johnston CS, Swan PD, Tjonn SL, and Sears B. “Blood ketones are directly related to fatigue and perceived effort during exercise in overweight adults adhering to low-carbohydrate diets for weight loss: a pilot study.” J Am Diet Assoc. 2007 107:1792-1796. 3. Sung-Jen Wei, Joseph R Schell, E Sandra Chocron, Mahboubeh Varmazyad, Guogang Xu, Wan Hsi Chen, Gloria M Martinez, Felix F Dong, Prethish Sreenivas, Rolando Trevino Jr , Haiyan Jiang, Yan Du, Afaf Saliba, Wei Qian, Brandon Lorenzana, Alia Nazarullah, Jenny Chang, Kumar Sharma, Erin Munkácsy, Nobuo Horikoshi, David Gius. Ketogenic diet induces p53-dependent cellular senescence in multiple organs. Sci Adv. 2024 May 17;10(20):eado1463. doi: 10.1126/sciadv.ado1463. 4. Owen OE, Felig P, Morgan AP, Wahren J, Cahill GF Jr. Liver and kidney metabolism during prolonged starvation. J Clin Invest. 1969 Mar;48(3):574-83. doi: 10.1172/JCI106016. 5. Chriett, S., Dąbek, A., Wojtala, M. et al. Prominent action of butyrate over β-hydroxybutyrate as histone deacetylase inhibitor, transcriptional modulator and anti-inflammatory molecule. Sci Rep 9, 742 (2019). https://doi.org/10.1038/s41598-018-36941-9. 6. Silva YP, Bernardi A, Frozza RL. The Role of Short-Chain Fatty Acids From Gut Microbiota in Gut-Brain Communication. Front Endocrinol (Lausanne). 2020 Jan 31;11:25. doi: 10.3389/fendo.2020.00025. 

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050824---Tofu-Blog

Tofu: Tips and Recipes Ideas

I have been eating tofu for a very long time, much longer than the 30 or so years I have been following the Zone Diet. Back then many of my favorite recipes came from the Tassajara cookbooks by Edward Espe Brown, the celebrated chef from the kitchen at California’s famous Zen Mountain Center, and cookbooks by Louise Hagler, a.k.a. Wendy Louise, a well-known authority on vegetarian cooking who is associated with a community in Tennessee known as The Farm. Those books are still among the best resources for tofu recipes. My mantra has always been if you don’t like something, don’t eat it. Keep this in mind if you’re new to tofu, start slowly by combining it with flavors and foods you like.    Tips and Suggestions    Firm-sprouted tofu is my preference for the Zone Diet. Unlike traditional tofu, which contains significant amounts of both protein and carbohydrate, sprouted has almost no carbohydrates. It’s lighter tasting, refreshing, and very filling.   Freezing tofu results in a chewy, sponge-like texture. I don’t recommend freezing, but some people prefer it when using tofu to substitute for meat in a recipe.    Baked tofu comes in a variety of flavors and makes an excellent quick meal with some vegetables and fruit added. It’s also great in salads.     Tofu made it into the book “The Top 100 Zone Foods” by Barry Sears.    Some recipes call for draining the tofu first. I find that usually isn’t necessary.   Tofu takes on the flavor of whatever is added to it.    Add nutritional yeast flakes to give a cheesy flavor to vegan tofu scrambles and dips. It’s also rich in protein and vitamin B12.   Cherry Vanilla Tofu “Ice Cream”   Tip: This doesn’t freeze or store well, so prepare only the amount you plan to serve immediately.   Using an immersion blender or a food processor blend equal parts of frozen dark cherries and firm tofu, plus some vanilla extract (preferably alcohol-free for best flavor). Serve immediately.  Tofu Scramble  This is great for breakfast, lunch, or dinner, and we’ve even brought it on long day hikes for a snack.   Crumble some firm tofu and stir in a generous amount of seasonings, taking care not to overdo it with the salt. Heat in a well-seasoned or nonstick skillet with a little Zone-friendly oil to the desired doneness.    Optional: If time allows, sauté some chopped onion in the skillet before adding the tofu and seasonings.    My favorite seasoning combination for this dish at my house is onion powder, garlic powder, turmeric, paprika, some oregano or thyme, nutritional yeast flakes, salt, and ground black pepper. The yellow color of the turmeric makes it somewhat like scrambled eggs.   Tofu Veggie Almond Pasta Salad   Dressing: Thin some smooth almond butter by stirring in some water, a little vinegar, and either soy sauce or Bragg’s Liquid Aminos (an unfermented soy sauce found in the health food section of most grocery stores).    Toss together cooked Dr. Sears’ Zone PastaRx Fusilli, tofu cut into cubes, matchstick cut red bell pepper, chopped green parts of scallions (a.k.a. green onions), and the almond butter dressing. Serve immediately or chill to serve later. It will keep well in the fridge for two or three days.   Use your imagination and see what you can come up with.  Experiment and have fun with it. Try using tofu to make cheesecakes, whipped desserts, tofu chocolate pudding, tofu “cream” based soups, tofu pot pie (think chicken pot pie), tofu burgers, tofu burritos, Buffalo tofu (like Buffalo wings), layered Mediterranean dips, tofu “meatballs”, grilled tofu, and more.    Enjoy! 

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