Showing posts with label harmful. Show all posts
Showing posts with label harmful. Show all posts

Thursday, 23 July 2015

Artificial Sweeteners: Sugar-Free, But At What Cost?

By offering the taste of sweetness without any calories, artificial sweeteners seem like they could be one answer to effective weight loss. The average 12-ounce can of sugar-sweetened soda delivers about 150 calories, almost all of them from sugar. The same amount of diet soda—zero calories. The choice seems like a no-brainer.
The American Heart Association (AHA) and American Diabetes Association (ADA) have given a cautious nod to the use of artificial sweeteners in place of sugar to combat obesity, metabolic syndrome, and diabetes, all risk factors for heart disease. (You can read the full statement here.)
“While they are not magic bullets, smart use of non-nutritive sweeteners could help you reduce added sugars in your diet, therefore lowering the number of calories you eat. Reducing calories could help you attain and maintain a healthy body weight, and thereby lower your risk of heart disease and diabetes,” said Dr. Christopher Gardner, an associate professor of medicine at Stanford University in California, in a press release accompanying the scientific statement.
As with everything, there’s more to the artificial sweetener story than their effect on weight. To learn more about them, I spoke with Dr. David Ludwig, an obesity and weight-loss specialist at Harvard-affiliated Boston Children’s Hospital. He has a keen interest in products designed to help people lose weight at keep it off. And what he has learned about artificial sweeteners worries him.


All sweeteners are not created equal

The FDA has approved five artificial sweeteners: saccharin, acesulfame, aspartame, neotame, and sucralose. It has also approved one natural low-calorie sweetener, stevia. How the human body and brain respond to these sweeteners is very complex.
One concern is that people who use artificial sweeteners may replace the lost calories through other sources, possibly offsetting weight loss or health benefits, says Dr. Ludwig. This can happen because we like to fool ourselves: “I’m drinking diet soda, so it’s okay to have cake.” The AHA and ADA also added this caveat to their recommendation.
It’s also possible that these products change the way we taste food. “Non-nutritive sweeteners are far more potent than table sugar and high-fructose corn syrup. A miniscule amount produces a sweet taste comparable to that of sugar, without comparable calories. Overstimulation of sugar receptors from frequent use of these hyper-intense sweeteners may limit tolerance for more complex tastes,” explains Dr. Ludwig. That means people who routinely use artificial sweeteners may start to find less intensely sweet foods, such as fruit, less appealing and unsweet foods, such as vegetables, downright unpalatable.
In other words, use of artificial sweeteners can make you shun healthy, filling, and highly nutritious foods while consuming more artificially flavored foods with less nutritional value.
Artificial sweeteners may play another trick, too. Research suggests that they may prevent us from associating sweetness with caloric intake. As a result, we may crave more sweets, tend to choose sweet food over nutritious food, and gain weight. Participants in the San Antonio Heart Study who drank more than 21 diet drinks per week were twice as likely to become overweight or obese as people who didn’t drink diet soda.
But you say you can give up diet drinks whenever you want? Don’t be so sure. Animal studies suggest that artificial sweeteners may be addictive. In studies of rats who were exposed to cocaine, then given a choice between intravenous cocaine or oral saccharine, most chose saccharin.


What’s your definition of safe?

Whether non-nutritive sweeteners are safe depends on your definition of safe. Studies leading to FDA approval have ruled out cancer risk, for the most part. However, those studies were done using far smaller amounts of diet soda than the 24 ounces a day consumed by many people who drink diet soda. We really don’t know what effect large amounts of these chemicals will have over many years.
And there are other health concerns beside cancer. In the Multiethnic Study of Atherosclerosis,daily consumption of diet drinks was associated with a 36% greater risk for metabolic syndrome and a 67% increased risk for type 2 diabetes. Aren’t these diseases that artificial sweeteners may help prevent in the first place?


Back to sugar?

Maybe sugar isn’t too bad after all. It’s all in how it’s packaged.
“Sugar-containing foods in their natural form, whole fruit, for example, tend to be highly nutritious—nutrient-dense, high in fiber, and low in glycemic load. On the other hand, refined, concentrated sugar consumed in large amounts rapidly increases blood glucose and insulin levels, increases triglycerides, inflammatory mediators and oxygen radicals, and with them, the risk for diabetes, cardiovascular disease and other chronic illnesses,” Dr. Ludwig explains.
I think I’ll have a glass of water and an apple.



Source
http://www.health.harvard.edu/blog/artificial-sweeteners-sugar-free-but-at-what-cost-201207165030

Saturday, 28 March 2015

Weight Loss Supplements—Are They Worth the Cost and Potential Risks?

Why I Encourage Supplement Industry to Stop Selling Weight Loss Cures

A web search of the term “weight loss supplements” will deliver more than 57 million results. You get nearly 8 million hits if you customize your search to “magic weight loss supplements.” There are even weight loss supplements specifically aimed at children!10
Some of the promotions claim their supplements are “magic;” others have “magic” in their names. Either way, the word “magic” implies that these supplements work like magic with little or no effort on your part. You can just go on living as you have in the past—even though that’s what contributed to or caused your weight gain in the first place.
Yet other supplements are advertised as “magic” pills that can help you build a healthy body by increasing muscle mass.11, 12 Here, body builders tend to be the main audience. Despite all the intense work body builders put into building their bodies, many are still looking for that outside “magic” to give them a leg up on the competition... In reality, this approach rarely if ever works. The supplement industry is in the health business—at least theoretically, they should be.
And as proponents of health, it would behoove them to act in the best interest of not just their customers, but also of the nutraceutical industry at large. “Magic” weight loss pills are more or less a nod to the pharmaceutical band-aid mentality, and actually run counter to the idea of a healthy lifestyle. This is why I stopped selling weight loss supplements, and it’s why I encourage others to stop selling them as well, and to truly embrace proper diet and lifestyle as the answer.
Intermittent fasting, for example, is an incredibly helpful strategy that will produce far better results than any diet pill ever will. The idea that you can just pop a pill and shed excess pounds is Polyanna thinking at its best. In the long run, you can run into problems, especially if the product contains potentially hazardous ingredients—again, most of which tend to be pharmaceuticals.
http://news.cision.com/the-investor-relations-group/r/dangerous-truths-about-weight-loss-supplements,c9179721

Most Weight Loss Products Are Stimulants, Like 'Coffee in a Pill'

While surveys13 have determined that use of weight loss supplements is common in the US, studies repeatedly fail to support their efficacy and safety, both in children14 and adults. The most commonly used weight loss supplements15 contain caffeine, ephedra, or ephedra-like substances such as bitter orange to “rev-up” your metabolism. This means you’ll either have trouble sleeping and/or you’ll experience the inevitable crash after the rev-up—hardly the effects you’d expect from a healthy lifestyle.
These types of stimulants can be particularly dangerous for people who have heart disease, high blood pressure, or are taking blood pressure medication. As just one example, Metabosyn,16 hailed as “the most powerful diet pill reviewed,” according to Diet Pill Digest, claims to boost metabolism and reduce appetite. However, it also carries a warning: if you’re sensitive to stimulants, don’t take it.
It’s important to realize that simply loading up on stimulants like caffeine is NOT going to improve your health, even if it helps you lose a few pounds. From my perspective, the cost is just too high—especially in light of the fact that if you eat right and exercise, you will have all the energy you need, and you’ll lose weight, without any of the adverse side effects you might experience when taking a stimulant.

You’re Paying for the Dream...

Other weight loss supplements are little more than vitamins and colon cleansers in disguise. Besides the stimulants mentioned, other common “weight loss” ingredients17 include chromium, chitosan, conjugated linoleic acid (CLA), ginseng, green tea, hydroxycitric acid, L-carnitine, psyllium (fiber), and St. John’s wort. Basically, you’re just paying extra for the “magic” label. Two examples of the latest diet pill fads that are little more than rip-offs are coconut oil capsules18 and Apple Cider Vinegar Plus.19
Why take a pill when you can reap all the benefits by consuming the actual food?! Ditto for CLA, which you get from grass-fed beef, or green tea, which you can savor by the cup rather than by the pill.
Besides, eating the food will ensure optimal absorption—a critical factor that can be iffy depending on the capsule used for the supplement in question. A 2012 article in Forbes Magazine20 listed weight loss supplements with top scientific ratings, and the majority of these contain active ingredients that are ideally obtained from whole food. In essence, if you eat right, you don’t need a weight loss supplement

For Weight Loss, Focus on Your Diet First...

As noted earlier, nutritional supplements can be an integral part of a healthy lifestyle by helping you address specific nutritional deficiencies for example. My stance is that they should not be used in lieu of a healthy diet however. As their name implies, they are supplemental to an otherwise healthy diet. That said, I no longer recommend weight loss supplements and “energy boosters,” as I do not believe they “fit” into a truly healthy lifestyle scheme. Not only are they potentially hazardous, but I believe they are ultimately unnecessary, provided you’re eating the right foods and, ideally, intermittently fasting. As described at length in other articles, to lose weight, you need to:
  1. Avoid sugar, processed fructose, and grains if you are insulin and leptin resistant. This effectively means you must avoid most processed foods
  2. Eat a healthy diet of whole foods, ideally organic, and replace the grain carbs with:
    • Large amounts of fresh organic locally grown vegetables
    • Low-to-moderate amount of high-quality protein (think organically raised, pastured animals)
    • As much high-quality healthful fat as you want (saturated and monounsaturated from animal and tropical oil sources). Most people actually need upwards of 50-85 percent fats in their diet for optimal health—a far cry from the 10 percent currently recommended.

How Do You Determine Whether a Supplement Is of High Quality?

If you want to use a vitamin or herbal supplement, you’d be well advised to make sure you’re buying a high-quality product—if not for the reason of safety, then for the reason of maximizing your health benefits. Here are some general guidelines for selecting a high-quality dietary supplement:
  • It is as close as possible to its natural (whole food) form.
  • Independent third-party labs check the raw materials for contaminants and correct dosage.
  • Follows industry standards for quality assurance including ISO 9001, ISO 17025, and Good Manufacturing Processes (GMP) certifications.
  • The utmost care has been taken in all phases of its production, from growing its ingredients, to manufacturing, testing for potency and quality control.
  • It works! I always try to select from companies that have a long track record of providing high-quality products that produce good clinical results.
Remember, if you are interested in optimizing your health and losing weight in the process, your BEST solution is to choose the highest quality foods possible, and eat a wide variety of whole organic foods. You can use my free nutrition plan and work your way up to the advanced stage. Once you have addressed your diet and are looking for further improvement, odds are you might benefit from some supplements, such as animal-based omega-3 supplement and a probiotic for example. There are many others you could then consider depending on your specific circumstances, including a high-quality multivitamin, additional antioxidant support, and others.

Sources and References 

SOURCE