I am frequently asked about the sweeteners that can be used with a low carbohydrate diet. There are a number of sweeteners available that are used in “LowCarb” pre-processed foods like shakes or bars, or in cooking as alternatives to sugar. However, most of them raise insulin levels without raising blood sugar and are not appropriate for use with a true low-carbohydrate/ketogenic diet. You can see and print the article I published clarifying which sweeteners you can use and which ones to avoid here:
Of recent note, I’ve been asked about the insulin response that occurs in the study found here quoted by Dr. Jason Fung in his wonderful book, The Obesity Code.
First, it is essential to note that both the crystalline form of Stevia and the aspartame used in the form of Equal, also a crystal, contain either dextrose or malto-dextrin as the crystallizing agent. Both dextrose and malto-dextrin have a known insulin spike equal to table sugar. You can see that in my article link above. Watch the video and we’ll discuss which forms of Stevia and aspartame don’t raise insulin in myself or my patients.
Aspartame has been effective in appetite suppression in many obesity patients clinically. However, recent studies have demonstrated that aspartame does have a negative effect on gut flora, has potential to cause insulin resistance to persist when used long term (seen in animal studies) and has been shown to damage the mitochondria of brain cells (also animal studies). I now caution my patients with its use. We will keep a very close eye on all these sweeteners.
I am frequently asked about the sweeteners that can be used with a low carbohydrate diet. There are a number of sweeteners available that are used in “LowCarb” pre-processed foods like shakes or bars, or in cooking as alternatives to sugar; however, many of them raise insulin levels without raising blood sugar and are not appropriate for use with a true low-carbohydrate/ketogenic diet. You can see and print the article I published clarifying which sweeteners you can use and which ones to avoid in the menu bar above “Sour Truth About Sweeteners” and you can watch last night’s periscope below:
“I’ve tried your low-carb diet, Dr. Nally, and it didn’t work.”
“Hmm . . . really?” If you’re mumbling this to yourself, or you’ve said it to me in my office, then lets have a little talk. You’ve probably been subjected to the common ketosis killers.
I’ve heard this statement before. It’s not a new statement, but it’s a statement that tells me we need to address a number of items. If you’ve failed a low carbohydrate diet, I’d suspect you are pretty severely insulin resistant or hyperinsulinemic. You probably never really reached true ketosis. I’d want to have you checked out by your doctor to rule out underlying disease like hypothyroidism, diabetes, other hormone imbalance, etc.
Nutritional Ketosis is Most Effective as a Lifestyle Change
Next, switching to a low-carbohydrate lifestyle is literally a “lifestyle change.” It requires that you understand a few basic ketosis principles. And, it takes the average person 3-6 months to really wrap their head around what this lifestyle means . . . and, some people, up to a year before they are really comfortable with how to eat and function in any situation.
I assume, if you are reading this article, that you’ve already read about ketosis and understand the science behind it. If not, please start your reading with my article The Principle Based Ketogenic Lifestyle – Part I and Ketogenic Principles – Part II. If this is the case, then please proceed forward, “full steam ahead!”
There are usually a few areas that are inadvertently inhibiting your body transformation, so let’s get a little personal.
Nutritional Ketosis is a Very Low Carbohydrate Diet
First, this is a low carbohydrate diet. For weight loss, I usually ask people to lower their carbohydrate intake to less than 2o grams per day. How do you do that? (A copy of my diet is accessible through my membership site HERE.) You’ve got to begin by restricting all carbohydrates to less than 20 grams per day. Any more than 20 to 30 grams per day will cause an insulin release from the pancreas and stimulate fat storage of both carbohydrate and fat for the next 10-12 hours, commonly killing ketosis. Keep a dietary journal to record your progress, your cravings, your successes and failures. I’m going to want to see it and review it with you if you see me.
No, I don’t believe in “Net Carbs.” Net Carbs are a sales gimmick to get you to buy “artificial food” that keeps you coming back for “artificial food” and halts your weight loss (you’ll see why shortly). You’re going to lose the most weight and feel your best when you eat real food. I do allow for the subtraction of real fiber, specifically non-cooked, non-blended, non-juiced leafy greens (If you cook, blend or juice a leafy green, it activates more carbohydrate availability). Leafy greens are real fiber. You can subtract them. In fact, I recommend eating 1-3 cups of leafy greens per day to help bowel function & provide necessary folic acid, but, everything else is “carbage.” Avoid it.
Yes, cottage cheese and yogurt contain carbohydrates. Be very cautious with them.
Alcohol also halts your weight loss. It’s not the sugar in the alcohol I’m worried about, the distilling process changes the sugar to alcohol, however, alcohol stimulates an insulin response after the alcohol is metabolized in the liver with a SIMILAR RESPONSE to regular sugar.
To Effectively Maintain Nutritional Ketosis, You MUST get adequate Protein
Second, this is a low carbohydrate, moderate protein, high fat lifestyle. N0 . . . it is NOT a high protein diet! However, so many of my patients don’t eat enough protein that they feel like it is a “high protein diet.”
Protein is essential for the building and maintaining of muscle, connective tissue and a number of other enzymatic reactions in your body. However, in patients who are morbidly obese [people with a body mass index (BMI) over 50], excess protein intake can cause fat to be stored by producing an excessive insulin response. In these patients we initially moderate protein. Excess sugars and a number of proteins, in the presence of a high insulin response, are converted to triglyceride (the soft squishy stuff inside the fat cells that make them plump) and stocked away inside your adipose tissue. Excessive protein, especially the amino acids argenine, leucine and tryptophan are common ketosis killers, not because they are converted to sugar, but because they stimulate and insulin response all by themselves.
If you don’t fall into the morbidly obese category (BMI over 50). Then, I encourage you to use the protein levels below.
Initially, I ask my patients to focus on lowering their carbohydrate intake and I don’t really worry about protein. (It is often hard enough to figure out what the difference between a carbohydrate and a protein in the first month or two if you’ve never had any nutrition background.) Most people begin losing weight just by lowering carbohydrates over the first few months. Once you figure out how to lower your carbohydrates, if your weight loss is not moving and your pants are not getting looser, then you’re probably eating too much protein.
How much protein do you need? It’s pretty easy to calculate and is based on your height and gender. Your basic protein needs to maintain muscle, skin and hair growth are as follows:
70 grams or higher for women per day
120 grams or higher for men per day.
However, these levels are WAY TOO LOW for weight loss and maintaining good health. Because we now know that protein acts as a hormone in a number of ways, in my office I recommend women get 80-90 grams of protein per day, and men should get > 150 grams of protein per day.
This also goes for protein powders and protein shakes. Many of these have 25-40 grams of protein in them per serving, so be careful with their use.
Nutritional Ketosis is a High Fat Diet
Third, this is a high fat lifestyle. Yes, I want you to INCREASE your fat intake. I’m going to repeat that, again, just for clarity, . . . . INCREASE your fat intake. Increase it to around 50% of your total calories, . . . 70% of your total calories if you can do it. Not enough fat is a common ketosis killer.
“What?! Won’t that cause heart disease and stroke and make my cholesterol worse?!!!”
I know, take a big deep breath . . . (you may even need to breath into a paper bag for a minute if you begin hyperventilating).
No, it will not raise your cholesterol, cause heart disease, or cause a stroke. If you have lowered your carbohydrate intake to less than 20 grams per day, then there is NO hormonal signal for you to make more bad cholesterol, worsen heart disease, or cause a stroke. In fact, there is great data showing that increasing your fat and lowering your carbohydrates reverses the blockage in the arteries. I see this reversal every single day in my clinic through the application of ketogenic diets.
If we remove carbohydrate as your primary fuel, you must replace it with something else.That something else should be fat. Protein must be moderated, as it will also be stored as fat if you eat too much. So, if the carbohydrates are kept low, fat intake can be increased and the body will pick the fat it wants and essentially throw the rest out without raising cholesterol, causing weight gain or causing heart disease. This is why we want you to use good natural animal fats like butter, hard cheese, olive oil, coconut oil, avocado, etc. Look for fats highest in omega-3 fatty acids as these decrease inflammation and improved weight loss. Look for meats highest in fat like red meat (55% fat) and pork (45% fat). Take the food pyramid and flip it over.
Check Your Sweeteners At the Door
The fourth common ketosis killer and culprit in halting your weight loss is artificial sweeteners. There are quite a few of them. Most of them WILL cause an insulin response (exactly what we don’t want for weight loss) with minimal to no rise in blood sugar. Raising blood sugar doesn’t matter, if the insulin is being stimulated . . . “you’re gonna gain weight for the next 10-12 hours.” I wrote an article for you to print off and hang on your fridge, upload it to your iPhone or carry it with you in your purse to the grocery store. (If you’re a man and you’re carrying a purse, please don’t tell me about it.) You can find the article here: The Skinny About Sweeteners. The short list of those sweeteners that are OK to use and cook with, and do not increase insulin response, can be found here in my Amazon Store.
Don’t Even Start with Coffee Creamers
Fifth on my list is coffee creamer. Coffee creamer contains corn syrup solids (another very special name for . . . SUGAR!!) and/or maltodextrin (SUGAR’s married name!). If you must put something in your coffee, then use real heavy cream (pure tasty fat) or real butter. It will taste much better (I’m told – I don’t drink coffee personally) and you won’t get an insulin spike 2-3 hours later and begin craving more coffee and donuts.
Yes, “Half & Half” is half fat and half sugar. . . avoid it too!!
Ketosis Killing Medications
The sixth culprit in halting weight loss is medications. Please talk to your doctor before making ANY changes in your medications as suddently stopping them can be hazardous to your health. Those highest on my list for stopping your weight loss are Glyburide (glipizide), insulin, & steroids like prednisone. A more complete list of medications that will halt your weight loss can be found on my on my ketogenic diet plan. If you are on any prescription medications, please talk to your doctor or to a physician board certified in obesity medicine treatment about how to adjust or wean these medications in a way that is safe and appropriate for your individual needs.
Estrogen
The seventh common culprit in halting weight loss is a lack of estrogen in menopausal or post-menopausal women. About 20% of women that I see in my practice who are over 55 years old, need some degree of estrogen replacement before they are able to lose weight. Estrogen plays a very large role in regulation of the metabolism and when deficient, causes weight retention or weight gain. Talk to your doctor about the risks and benefits of estrogen for you individually in this situation.
For many years, we’ve thought that caffeine was great for weight loss. However, we are finding, clinically, that too much caffeine can also cause a stress response by raising cortisol, releasing glycogen, thereby stimulating an insulin response and bringing your weight loss to a screeching halt. How much caffeine? . . . The jury is still out . . . and remains to be determined. But, I am currently under going an n=1 experiment on myself (as many of you know, I loved Diet Dr. Pepper. But I had to give it up). I’ll keep you posted . . .
Look closely at these eight issues. Correcting them usually solves most plateaus with weight loss and improves blood pressure, blood sugar and cholesterol control dramatically.
I recently read a blog post decrying anyone that would recommend a low carbohydrate / ketogenic diet to their patients.
What?!
In fact, this particular blog outlined a number of “adverse reactions” to a ketogenic diet, and based upon these perceived reactions, the writer advised severe caution with its use in just about anyone. It is important to note at the outset that most of the data this blogger quotes are from older studies completed in children for the treatment of epilepsy with specific liquid ketogenic dietary meal replacements. (Not what you’d expect in a low-carb / ketogenic diet for the average obese adult today.)
Thanks to recent misinformation by a number of medical professionals, including the person writing the blog referenced above, a poor understanding of fatty acid metabolism by the general community, and a distinct lack of understanding of human adaptability recorded over the last 5,000-6,000 years, there is still significant confusion about ketogenic diets.
It is important to recognize the crucial fact that the human body is designed to function quite well when supplied any of three macronutrients: carbohydrates, proteins or fats. It does so through an amazing series of enzymatic reactions referred to as the Krebs (tricarboxylic acid) cycle, producing needed ATP (adenosine triphosphate) required for our muscles to contract, our heart to beat and our diaphragm to expand our lungs. What’s even more amazing that that the body was designed to recognize the season we are in based up on the food we eat. That is, until we invented refrigerators in 1913. (Now our bodies think it’s year round summer time . . . wait . . . I live in Arizona where it is year round summer time.)
No, this is not a post about unplugging your refrigerator, living on solar, getting off the grid and saving energy.
Our bodies recognize the seasons we are in based upon inherent hormone release. The key hormone is insulin. Insulin can be looked at as the seasonal indicator to our bodies. Insulin production rises and falls based on our intake of carbohydrates (sugar, starches, some fibers). Insulin, essentially, tells our bodies when it is a “time of plenty” and when it was a “time of famine.” Why? You ask. We didn’t have refrigerators 100 years ago and you were lucky if you had a root cellar. The body needs to know when to store for the famine (the winter) that was around the corner. Insulin is that signal.
During the summer, potatoes, carrots, corn and other fruits are readily available. These are all starchy carbohydrates and they all require the body to stimulate an insulin response so that they can be absorbed. Insulin stimulates fat storage (J Clin Invest. 2000;106(4):473-481. doi:10.1172/JCI10842). Just like bears, our bodies were designed to store for the winter.
If you think back in history, your grandparents probably used stored meats & cheeses that could be salted or smoked for preserving during this time of year. Those crossing the plains were commonly found with pemmican, a concentration of fat and protein used as a portable nutrition source in the absence of other food. (Chapter VIII. Narrative of the Life of David Crockett, of The State of Tennessee, Written by Himself, Sixth Edition [E.L. Carey and A. Hart:Philadelphia] 1834, 1837; Marcy, The Prairie Traveler, p. 31.) Think about conversations you may have had with your grandmother when she told you that for Christmas, she received an orange. A single orange for a gift?! Many of my patients drink 12-15 of them in a glass every morning. The winter diets of our grandparents were very low in starches and carbohydrates. When carbohydrate intake is low, little insulin is produced.
Again, insulin is the hormone that tells you that you’re in “a time of plenty” and stimulates weight gain and cholesterol production to prepare for winter. Those prescribing the use of ketogenic diets understand this innate human adaptive trait, and use it to effect changes in weight, cholesterol and other desired metabolic changes.
Now, let’s define the difference between ketosis and keto-acidosis and try to clarify the misinformation that is being spread around the blogosphere.
A ketone is a molecule the body produces from the breakdown of fat and some proteins (amino acids). There are specifically three types of ketones: beta-hydroxybutyric acid, acetoacetic acid and acetone. If ketosis was “bad,” then why would our bodies produce these molecules? They are not bad, and in fact, multiple studies show that the body is often more efficient and effective when it functions on ketones rather than glucose as its primary fuel source. The body can only supply a limited amount of sugar or glucose for fuel. If you talk to runners, marathoners or triathletes, they will tell you that after about 45-90 minutes of continuous endurance exercise the glucose supply runs out and they will experience what is termed a “bonk” (have a low-blood sugar or hypoglycemic episode). Unfortunately, our bodies can only store about 18-24 hours of glucose.
However, the body can store days upon days of fat in the form of triglyceride in the fat cells. Triglyceride is broken down into ketones. If glucose is the “unleaded” fuel, you can think of ketones as the “diesel fuel” that is easier to store and runs longer.
The average body functioning on ketones as the primary fuel will have a ketone level measured in the blood somewhere between 0.4 and 4 mmol/L. Because of a balance that is created by the use of ketones and a feedback mechanism that kicks in when the ketone level rises, the body will maintain a pH of around 7.4.
Ketoacidosis is dramatically different. If you are a type I diabetic, you don’t produce any insulin. The feedback mechanism regulating ketone use is broken and the ketone levels and triglyceride breakdown speeds up because the body can’t access glucose and can’t produce insulin. The ketone levels spike and the level can rise to > 25 mmol/L. In the presence of a high blood sugar and high ketone level, the acid level in the blood shifts to a pH of less than 7.3. This is referred to as metabolic acidosis and can be life threatening as the low pH shuts down the bodies’ enzymatic processes and a person becomes critically ill and without treatment, can die. (Kitabchi AE et al., Clinical features and diagnosis of diabetic ketoacidosis and hyperosmolar hyperglycemic state in adults. www.uptodate.com, May 2015.)
If you’re not a type I diabetic, you have nothing to worry about. Regardless of what the “ketogenic nay-sayers” blog about, your liver makes approximately 240g of glucose per day, this stimulates a basal release of insulin which keeps the pH in check. It’s also what keeps weight loss at a consistent pace of around 2-10 lbs per month.
If you are a type I diabetic, don’t fret. Carbohydrate restriction can still be used very effectively. It just takes some balancing and understanding of your individual metabolism. Talk to your physician and/or medical bariatrician about how to follow a carbohydrate restricted diet while using insulin.
What about all the other “adverse effects” the blogosphere and other so-called experts claim about ketogenic diets?
Let’s take them on one by one. Are you ready?
Gastrointestinal (GI) disturbances – Yes. Any time you change your diet you may experience diarrhea, constipation or gassiness. Most of the time, this is because you are either 1) not eating enough leafy greens (fiber) or 2) you’re using a supplement that contains an artificial sweetener. Most of the studies on ketogenic diets did not incorporate fiber and the studies used to make this point were on children who used a ketogenic fat supplement shake or liquid preparations containing these artificial sweeteners to make them palatable. If you have spoken to any bariatrician, they will tell you, the best way to follow a ketogenic diet is to eat real food. If you want to read about the anecdotal GI effects of sweeteners, read the comment section in Amazon about the Haribo Sugar Free Gummy Bears.
Inflammation Risk – In every patient that I have placed on a ketogenic diet in the last 8 years, all inflammatory markers including CRP, Sedimentation Rate and Uric Acid have all decreased. Inflammation gets better on an appropriately formulated ketogenic diet. The older studies of ketogenic diets in children contain most of their fat from Omega-6 fatty acids from vegetable oil which will increase inflammation and oxidative stress, spike the cortisol levels and have the secondary effect of actually raising the triglycerides. (Simopoulos AP,The importance of the ratio of omega-6/omega-3 essential fatty acids, Biomed Pharmacother., 2002 Oct;56(8):365-79.)
Muscle Cramps/Weakness – The process of weight loss occurs by burning fat into CO2 and water. We breathe the CO2 out, but the water produced has to follow salts out through the kidneys. Hence, we lose salts. This can cause weakness and muscle cramps. The solution? Stop restricting salt on a low carbohydrate diet. We are the only mammal that restricts salt and we do it because low-fat diets cause us to retain water. Low carbohydrate diets do the opposite. Use sea salt or sip beef or chicken bouillon broth with your dinner. The use of yellow mustard also helps (the small amount of quinine in yellow mustard stops the cramping). If you have congestive heart failure, talk to your doctor about monitoring your salt intake in balance with your diuretic or water pill.
Hypoglycemia – If you read the ketogenic diet research, most of it was done on epileptic children. The diets called for a period of starvation, then the use of a ketogenic liquid based on the John’s Hopkin’s protocol. It is a well-known fact in medicine that starvation in children can frequently cause hypoglycemia, especially in children with other genetic or congenital defects leading to forms of epilepsy. In clinical practice, with ketogenic diet use in adults, hypoglycemia is rare.
Low Platelet Count (Thrombocytopenia) – Again, this was seen in the epileptic children who were placed into starvation first, then introduced a liquid fat replacement shake to stop intractable seizures. These liquids or shakes were often nutrient deficient in other essentials. Folic acid, B12 and copper deficiency can occur when not eating “real food.” Low platelet counts are rarely seen on ketogenic diets based around “real food.” Many children in the ketogenic studies had been on or were concomitantly on valproic acid for their seizures. Valproic acid is commonly known to cause thrombocytopenia (Barry-Kravis E et al, Bruising and the ketogenic diet: evidence for diet-induced changes in platelet function. Ann Neurol. 2001 Jan;49(1):98-103.; Kraut E, Easy Bruising, http://www.uptodate.com, May 2015.)
Easy Bruising – This is usually due to inadequate protein supplementation as was the case in much of the ketogenic literature where protein levels were also restricted. (Kraut E, Easy Bruising, http://www.uptodate.com, May 2015.)
Pancreatitis – Patients who are insulin resistant or have impaired fasting glucose commonly have high triglycerides. Elevation in triglycerides itself is a cause of pancreatitis. Ketogenic diets lower the triglycerides. However, if a patient has not been following their diet as directed, spikes in the triglycerides can occur placing the person at risk for pancreatitis.
Long QT Intervals/Heart Arrhythmias – The list of things causing Long QT intervals and abnormal heart rhythms is long and variable (Acquired Long QT Syndrome. Berul C et al. www.uptodate.com, May 2015). It is well know that starvation, rapid weight loss and liquid protein diets can cause a delay in the conduction signal in the heart. Anyone wishing to start any diet should have an electrocardiogram (EKG) through their doctor to ensure that the diet (of any type) doesn’t exacerbate a prolonged QT interval.
Cardiomyopathy – Prolonged QT intervals have been associated with cardiomyopathy and the former can stimulate the later. Any diet that has the potential to prolong a QT interval has the potential to cause cardiomyopathy. Hence the need for regular EKG monitoring on any diet (Acquired Long QT Syndrome. Berul C et al. www.uptodate.com, May 2015).
Lipid/Cholesterol Changes – In the 8 years I have been applying ketogenic diets to patients, I have seen dramatic improvement in the triglycerides and HDL levels. The only time triglycerides rise over 100 is if the patient is using artificial sweeteners or is cheating on the carbohydrate restriction. Total cholesterol commonly rises, however, this is indicative of the fact that there is a shift in the LDL particle size and this affects the calculation of both total cholesterol and LDL-C. In light of this, most of my patients have dramatic improvement in triglycerides and small dense LDL particle number. I’ve included the common cholesterol changes I seen in my office as a few case reports to demonstrate the effectiveness of a ketogenic diet:
Myocardial Infarction – It is interesting that one blogger includes this on the list of adverse reactions, however, when you actually read the study, the author of the paper make an “assumption” that there was potential for heart attack due to an elevated total cholesterol, however, a correlation was never made. Again, in the 8 years I have been using ketogenic diets, I have seen dramatic improvement in cholesterol profiles, inflammatory markers, atherosclerosis and carotid intimal studies (Shai I et al, Circulation 2010; 121:1200-1208).
Menstrual Irregularities / Amenorrhea – It is well known that any diet causing protein or other nutritional deficiency will affect the menstrual cycle first and growth second. The only time menstrual irregularities occur with a ketogenic or Low-Carb diet is when a patient is not taking in enough protein or is not eating real food. What amazes me is that a properly applied ketogenic diet causes normalization of the menstrual cycle, and in my practice, I’ve had a number of women successfully be able to conceive after making a ketogenic dietary change.
For more details on the nutrient content of a ketogenic diet, see the recent article by a friend of mine, Maria Emmerich. She’s been creating ketogenic diets for years and has a number of fantastic books my wife and I have been using in our home over the last nine years. She is one among many that can give you some direction on how to devise a healthy, real food based ketogenic diet. See the page on my website here that will give you some direction in formulating your Ketogenic Lifestyle.
So, to celebrate Mother’s Day, today, with my family, I am going to indulge in some Low-Carb / Ketogenic Cheese Cake!! Happy Mother’s Day, to all of you and especially to all you mothers out there making a healthy difference in the lives of your families! (You can find the recipe for this delicious cheese cake here)
In the words of Sir William Ostler, “If it were not for the great variability among individuals, medicine might well be a science and not an art.”
We just got a sample pack of Lily’s Chocolate. This is a Stevia and erythritol sweetened chocolate that has no aftertaste and doesn’t cause the stomach upset that many experience with chicory root based products. I am always looking for good low carbohydrate alternatives for snacks, as rescue foods, or to assist in baking.
My wife found this chocolate in a recipe that Carolyn Ketchum had posted on her website, All Day I Dream About Food. It is quite tastey!! Thanks, Caroyln!! (By the way, I dream about food all day long, too.)
I scanned a copy of the wrapper for the Salted Almond & Milk Flavor. I have to admit, I ate half the bar. It was that good!!
For those looking for an alternative chocolate for a snack or to use in a recipe, this may be the answer. You can find their whole line of chocolates here.
There are a number of recipes for “Fat Bombs” on the internet, but this one is my wife’s version. These have been a lifesaver for starting and maintaining a Low-Carbohydrate or Ketogenic diet over the last few years. They are fantastic mid-meal or anytime Low-Carb snacks, full of satiating fat, that really help during the holidays. I mentioned Fat Bombs to my patients in my Low-Carb Group Visit Class today and I promised to post them here:
Fat Bombs:
1 stick of real Butter softened
1 cup Coconut Oil
1/2-2/3 cup Erythritol
1 tsp liquid Stevia
1/3 cup Cocoa Powder
1 cup Peanut Butter or Almond Butter
2 cups chopped Macadamia Nuts or slivered Almonds
1-2 cups of Coconut
Mix together and place 1-2 table spoon sized scoops in small muffin tin or on wax paper. Must be kept refrigerated to remain firm.
Many of you have already seen my article about sweeteners, which ones work well and which ones make you fat. If not click here for the article. Stevia is one of those sweeteners that doesn’t spike your insulin as long as it isn’t crystallized with dextrose or maltodextrin. I actually found the stevia plant at one of my nearby nurseries, thanks Moon Valley Nursery.
The FDA approved an intense new artificial sweetener, Advantame. Because of its chemical similarity, Aspartame now has a super sweet cousin. This sweetener, 20,000-37,000 times more sweet than table sugar (sucrose), is found in powder form and dissolves in water. However, it does partially break down when exposed to heat or used in heated drinks, so it may not be that great for cooking.
Similar to Aspartame, one of the breakdown metabolites is phenylalanine, implying that those with sensitivity to phenylalanine or PKU may need to avoid it, however, the amount of phenylalanine produced when ingested was felt to be fairly negligible.
My interest was peaked by the fact that Advantame does not raise blood sugar or insulin levels in the multiple animal and three humans studies reviewed here and here. This implies that it probably won’t cause weight gain and the studies in animals actually revealed some negligible weight loss.
The FDA claims this is a very safe artificial sweetener due to it’s intense sweetness and requirement for only small quantities to be effective. In fact, Josh Bloom from the American Council on Science and Health was quoted saying that, “About the only way this stuff could harm you is if you were run over by a truck that was delivering it.”
From the perspective of weight loss, this may be another sweetener that could be used effectively on a carbohydrate restricted diet.