Looking for help with losing weight? Help that goes beyond the usual lifestyle changes, portion control advice and exercise routines? Weight-loss supplements touting names like "fat burner" and "thermo max" can be enticing. But do they work? And even more important, in the wake of the Food and Drug Administration's recent ban on ephedra, are they safe?
In this article, Environmental Nutrition provides a snapshot of 10 of the most popular ingredients currently in supplements for weight loss.
Chitosan
Made from the shells of lobsters, shrimp and other shellfish, chitosan is an indigestible fiber. It is supposed to help weight loss by binding with the fat you eat, blocking its absorption. However, studies do not support this claim. Side effects include constipation and gas. People with shellfish allergies should beware.
Chromium
Most often present as chromium picolinate, it has been promoted to boost lean mass and decrease body fat. Though study findings have been inconclusive, an analysis of several studies recently concluded that supplementing with 200 to 400 micrograms of chromium picolinate could result in about a 2.5-pound weight loss per week in some people. Other studies have found a loss of body fat and an increase in muscle tissue, with no change in weight. Still others have found no effect at all. Though some laboratory studies have raised safety issues, a large number of human studies suggest it is safe.
Citrus Aurantium (Bitter Orange)
This herbal extract is a natural source of synephrine (a compound similar to ephedrine) and the supplement industry's current answer to the ephedra ban. But there are no published studies to show it is an effective supplement for weight loss. And like ephedra, its side effects include an increase in blood pressure; Environmental Nutrition recommends avoiding it.
Conjugated Linoleic Acid (CLA)
Both animal and human research hints at a possible role for CLA in reducing body fat and increasing lean body mass, but it's not quite ready for prime time. None of the human studies have been long-term. CLA is currently being studied in combination with chromium picolinate. CLA is found naturally in dairy foods and beef and is generally considered safe.
Garcinia Cambogia
The extract from Garcinia cambogia fruit rind contains hydroxycitric acid (HCA), which supposedly curbs food intake, weight gain and storage of excess calories as fat. However, studies have failed to prove G. cambogia is an effective weight-loss aid. The most common side effects are upper respiratory and gastrointestinal symptoms.
Guarana
Caffeine is the effective ingredient in guarana plant seeds. Guarana may have a mild appetite suppressant effect over the short term. It was often used in combination with ephedra until ephedra was banned. The potential side effects are those of caffeine overdose—insomnia, restlessness, anxiety or panic.
Hydroxymethylbutyrate (HMB)
HMB is a natural byproduct of the breakdown of the amino acid leucine. HMB supplements are used by body builders in hopes of increasing muscle mass. A few small studies have suggested that HMB increases lean mass and decreases body fat when combined with weight training. However, studies with overweight and obese people are needed.
Plantago Psyllium
Psyllium is a water-soluble fiber from Plantago ovato seeds. Taken before a meal, it may make you feel full, causing you to eat less. While it is proved to aid constipation (that's how Metamucil works), it has not been proved as an effective weight-loss aid.
Pyruvate
Pyruvate formulas boast that they stimulate metabolism and reduce body fat. Pyruvate is found naturally in food and in the body as a result of the breakdown of carbohydrates and protein. Some studies have shown a weight-loss benefit with pyruvate supplements. But the people in the studies also exercised and cut back on calories. Moreover, the dosage used in the studies was high, requiring a handful of tablets each day. Experts say the case for pyruvate to aid weight loss is weak.
Yerba mate
Brewed into a tea, bitter Yerba mate is high in caffeine. Used in combination with other caffeine-containing herbs, like guarana and damiana, it was found in one study to delay stomach emptying time and aid weight loss. The study was short (45 days), so conclusions on keeping the weight off cannot be made.
The Bottom Line
Though all are relatively expensive and none are proved, of these top popular weight-loss contenders, chromium picolinate and CLA are probably the most studied. If you've already made up your mind to go the supplement route, you might want to give them a try.
Sunday, June 6, 2010
Saturday, June 5, 2010
Atkins Diet - How To Do It The Right Way?
Obesity is the main reason for many diseases like cardiovascular problems, diabetes, depression, and sleep apnea. The only way out of this problem is to follow a strict and healthy diet. But that doesn’t mean avoiding food altogether for that it is not at all a good option since it would deprive our body of essential nutrients. Hence a controlled carbohydrate diet is advised for carbohydrate is mostly responsible for increasing one’s body weight.
The low carbohydrate Atkins Diet was first introduced in 1970’s by Dr. Robert Atkins. But it became popular almost 10 years later after the release of his book - ‘Dr. Atkins New Diet Revolution’ which went one to become one of the bestsellers of that decade. In no time, millions of people in the United States and abroad began to follow Atkins diet specifications as their first diet choice.
What is Atkins Diet?
Atkins Diet is a high protein, low carbohydrate diet. It promotes using meat, eggs, and cheese while discouraging high carbohydrate-content foods such as bread and rice. If excess carbohydrates are taken in, excess enzymes should be generated to digest it. This may lead to disintegration of pancreatic cells in a long run, which may further lead to diabetes. According to Robert Atkins, on having a low carbohydrate diet, our body will enter into a state of ketosis, in which, instead of carbohydrates, fat is digested to release energy. This reduces the need for more insulin produced by the pancreatic cells and the fat deposits are subsided. Thus, the body weight is reduced to a considerable amount.
Advantages of Atkins Diet:
1. Considerable amount of body weight is reduced by the burning of fats which is the secondary source of energy.
2. Inter-meal diets could be avoided since you won’t be hungry between meals.
3. Could maintain constant blood sugar level.
4. Since most of the toxins contained in our body are removed along with the burning of fats, overall heath is improved.
Things to Note:
1. It is recommended to consult a doctor or physician before trying out Atkins diet meal plans.
2. Daily exercise is highly recommended along with Atkins diet foods.
3. People with kidney disorders, pregnancy, and diabetes are advised not to follow Atkins diet meal plans.
Phases of Atkins Diet:
1. Induction - In this phase, which includes first 14 days of the diet, it is said that you will lose up to 15 pounds of your body weight. During this time, the amount of carbohydrates consumed per day will be less than 20 grams. The only carbohydrates included in your Atkins diet recipes will be low carbohydrate-content vegetables like tomato.
2. Ongoing Weight Loss – During this second stage, the consumption of carbohydrates is raised up to 5 grams per day.
3. Pre-maintenance – During this stage of Atkins diet meal plans, the rate of fall of body weight will be slower. Also, you can experiment various other foods to see whether they add your body weight or not. If found safe, you could add it to your Atkins diet food products.
4. Maintenance – You enter this phase when you find that you have reduced the body weight to the desired level. Also you could add some more carbohydrates to your diet which do not raise your body weight, like full wheat bread.
Tail Piece: The ultimate result of Atkins diet program (other diet programs as well) depends solely on how well the person follows the recommendations. Hence make sure that you follow it religiously.
The low carbohydrate Atkins Diet was first introduced in 1970’s by Dr. Robert Atkins. But it became popular almost 10 years later after the release of his book - ‘Dr. Atkins New Diet Revolution’ which went one to become one of the bestsellers of that decade. In no time, millions of people in the United States and abroad began to follow Atkins diet specifications as their first diet choice.
What is Atkins Diet?
Atkins Diet is a high protein, low carbohydrate diet. It promotes using meat, eggs, and cheese while discouraging high carbohydrate-content foods such as bread and rice. If excess carbohydrates are taken in, excess enzymes should be generated to digest it. This may lead to disintegration of pancreatic cells in a long run, which may further lead to diabetes. According to Robert Atkins, on having a low carbohydrate diet, our body will enter into a state of ketosis, in which, instead of carbohydrates, fat is digested to release energy. This reduces the need for more insulin produced by the pancreatic cells and the fat deposits are subsided. Thus, the body weight is reduced to a considerable amount.
Advantages of Atkins Diet:
1. Considerable amount of body weight is reduced by the burning of fats which is the secondary source of energy.
2. Inter-meal diets could be avoided since you won’t be hungry between meals.
3. Could maintain constant blood sugar level.
4. Since most of the toxins contained in our body are removed along with the burning of fats, overall heath is improved.
Things to Note:
1. It is recommended to consult a doctor or physician before trying out Atkins diet meal plans.
2. Daily exercise is highly recommended along with Atkins diet foods.
3. People with kidney disorders, pregnancy, and diabetes are advised not to follow Atkins diet meal plans.
Phases of Atkins Diet:
1. Induction - In this phase, which includes first 14 days of the diet, it is said that you will lose up to 15 pounds of your body weight. During this time, the amount of carbohydrates consumed per day will be less than 20 grams. The only carbohydrates included in your Atkins diet recipes will be low carbohydrate-content vegetables like tomato.
2. Ongoing Weight Loss – During this second stage, the consumption of carbohydrates is raised up to 5 grams per day.
3. Pre-maintenance – During this stage of Atkins diet meal plans, the rate of fall of body weight will be slower. Also, you can experiment various other foods to see whether they add your body weight or not. If found safe, you could add it to your Atkins diet food products.
4. Maintenance – You enter this phase when you find that you have reduced the body weight to the desired level. Also you could add some more carbohydrates to your diet which do not raise your body weight, like full wheat bread.
Tail Piece: The ultimate result of Atkins diet program (other diet programs as well) depends solely on how well the person follows the recommendations. Hence make sure that you follow it religiously.
Thursday, June 3, 2010
Atkins Diet - Increase Your Heart Attack Risk?
Critics of the Atkins diet have always questioned it's health validity. When Dr Atkins was called before a Senate committee headed by George McGovern, he was forced to admit that pregnant women following his low carb diet would suffer fetal damage to their unborn babies.
Studies since have found that long term, Atkins dieters do not lose weight more quickly, or keep it off more, over a twelve month period as compared to people following other diets. The initial weight loss is mostly fluid, not fat as is often claimed.
And whilst the high levels of protein and fats, and extremely low level of carbohydrates, appeals to some people's tastes, for most, it's unappetizing and doesn't produce a feeling of well being. As such, it becomes difficult to follow for long periods. Yet it is sold as a 'way of life', rather than a diet.
Most seriously, questions raised by Atkins's death, and the state of his heart health as revealed in the medical report after his death, seemed to give credibility to his critics.
Officially, Atkins died as a result of slipping on an icy pavement near his office. But his medical report revealed that he had a history of heart attacks, hypertension, and congestive heart failure. His wife explained the heart problems as a result of a virus they both contracted in Turkey.
Whether or not this is true, other evidence has since emerged that indicates Atkins diet is not good for the heart after all.
One recent study at Oxford University followed 19 people over a two week period. When they followed a diet high in fat and low in carbs, it was found that the energy stored in their heart was reduced by an average of 16%. In some people, this reduction was as high as 30%. On top of this, whilst they were on this diet, these people's hearts were unable to relax as easily. These changes reverted back to normal two weeks after they went back to a normal diet.
Jody Goran's experience was much worse. A 50 year old, he tried the Atkins diet and lost weight. He stayed on it for two years, but in October, 2003 he started having chest pains. He went to the doctor straight away, and they found that one of his main arteries was 99% blocked. He was not far away from having a fatal heart attack, and had to have surgery straight away.
Yet, 6 months before he'd started the Atkins diet, his check up revealed a very healthy heart. He had clean, unblocked arteries, and a 96% chance that he would NOT have a heart attack within the next 5 years. After following the Atkins diet for 2 years, not only was one of his main arteries blocked 99%, but his cholesterol had risen from 146 to 215. Just after the angioplasty, his cholesterol levels fell back to 209. But it wasn't until he discontinued the diet completely that his cholesterol levels returned to 146.
According to a report in The Weekend Australian Magazine, Atkins even acknowledged that in as many as 30% of dieters, higher levels of the 'bad' cholesterol can cause potentially serious heart problems. The same article does state that in others, the 'bad' cholesterol levels will lower, but 30% is a significant number. And there are other, healthier ways to lower cholesterol.
Overall, the questions and potentially serious side effects, quite apart from the bad breath and constipation, make this a highly questionable long term approach to weight control.
Studies since have found that long term, Atkins dieters do not lose weight more quickly, or keep it off more, over a twelve month period as compared to people following other diets. The initial weight loss is mostly fluid, not fat as is often claimed.
And whilst the high levels of protein and fats, and extremely low level of carbohydrates, appeals to some people's tastes, for most, it's unappetizing and doesn't produce a feeling of well being. As such, it becomes difficult to follow for long periods. Yet it is sold as a 'way of life', rather than a diet.
Most seriously, questions raised by Atkins's death, and the state of his heart health as revealed in the medical report after his death, seemed to give credibility to his critics.
Officially, Atkins died as a result of slipping on an icy pavement near his office. But his medical report revealed that he had a history of heart attacks, hypertension, and congestive heart failure. His wife explained the heart problems as a result of a virus they both contracted in Turkey.
Whether or not this is true, other evidence has since emerged that indicates Atkins diet is not good for the heart after all.
One recent study at Oxford University followed 19 people over a two week period. When they followed a diet high in fat and low in carbs, it was found that the energy stored in their heart was reduced by an average of 16%. In some people, this reduction was as high as 30%. On top of this, whilst they were on this diet, these people's hearts were unable to relax as easily. These changes reverted back to normal two weeks after they went back to a normal diet.
Jody Goran's experience was much worse. A 50 year old, he tried the Atkins diet and lost weight. He stayed on it for two years, but in October, 2003 he started having chest pains. He went to the doctor straight away, and they found that one of his main arteries was 99% blocked. He was not far away from having a fatal heart attack, and had to have surgery straight away.
Yet, 6 months before he'd started the Atkins diet, his check up revealed a very healthy heart. He had clean, unblocked arteries, and a 96% chance that he would NOT have a heart attack within the next 5 years. After following the Atkins diet for 2 years, not only was one of his main arteries blocked 99%, but his cholesterol had risen from 146 to 215. Just after the angioplasty, his cholesterol levels fell back to 209. But it wasn't until he discontinued the diet completely that his cholesterol levels returned to 146.
According to a report in The Weekend Australian Magazine, Atkins even acknowledged that in as many as 30% of dieters, higher levels of the 'bad' cholesterol can cause potentially serious heart problems. The same article does state that in others, the 'bad' cholesterol levels will lower, but 30% is a significant number. And there are other, healthier ways to lower cholesterol.
Overall, the questions and potentially serious side effects, quite apart from the bad breath and constipation, make this a highly questionable long term approach to weight control.
Zone Diet – A New Weight Loss System
The Zone Diet works on the principle that 100,000 years ago, we were meat eaters, and our metabolism is designed to handle the demands of a meat-based diet.
Madonna, Demi Moore, and Jennifer Aniston swear by the results of the Zone Diet, which was created by Barry Sears, PhD. The Zone Diet contains 40% carbohydrate, 30% protein, and 30% fat and is known as the 40-30-30 plan.
As the food industry evolved, more carbohydrates have been introduced into our daily diet, thus causing an imbalance in our metabolism to burn fat. The reason for our extra weight can also be attributed to the many grains and starches in our diet (pasta, rice, breads, and potatoes). The Zone Diet's approach calls for a return to the diets of our ancestors where meat, fruits, and vegetables are the main dietary foods.
The Zone Diet suggests that you need the right ratio of carbohydrates to proteins and fats in order to control the insulin in the bloodstream. Too much of the hormone (insulin) can increase fat storage and inflammation in the body (conditions that are associated with obesity, type 2 diabetes and heart disease). Sears asserts that by using the Zone Diet, you are actually optimizing the body's metabolic function. Through the regulation of blood sugar, you allow your body to burn excess body fat.
Although you are not prohibited from any particular food group, it is best to avoid food with high fat and carbohydrates such as grains, starches, and pastas. The ideal sources of carbs are fruits and vegetables and for monounsaturated fats olive oil, almonds, and avocados are recommended. The Zone Diet claims to use food as a drug for overall good health, weight loss and prevention or management of heart disease and diabetes.
Sears says that you can test to see whether you are 'hormonally' correct by eating following the Zone diet and see how you feel four hours later. To simplify the Zone Diet, fill one-third of a plate with low-fat protein, and then two-thirds with fruits and vegetables.
Celebrities and some health experts say that the Zone's recommendations do not stray far from the USDA's (United States Dietary Association) dietary guidelines and therefore are advocates of the Zone Diet. Others argue that the Zone Diet has flawed ratios but Sears argues that the Zone diet is a low-glycemic-load diet that has adequate protein. .
A critic of the Zone diet such as the AHA (American Heart Association) classifies the Zone Diet as high protein and does not recommend the Zone Diet for weight loss. They contend that the Zone Diet has not been proven effective in the long term for weight loss. The AHA issued an official recommendation warning against diets like the Zone Diet. They believe that the Zone Diet is hazardous as it restricts the intake of essential vitamins and minerals present in certain foods. The AHA also contends that the protein ratio in the Zone diet is too high even if the minimal fat ratio is good. Robert H. Ecker M.D of the A.H.A. finds the Zone Diet's theory on insulin flawed and argues that there is no scientific proof that the hormone insulin plays a big role in weight regulation.
Madonna, Demi Moore, and Jennifer Aniston swear by the results of the Zone Diet, which was created by Barry Sears, PhD. The Zone Diet contains 40% carbohydrate, 30% protein, and 30% fat and is known as the 40-30-30 plan.
As the food industry evolved, more carbohydrates have been introduced into our daily diet, thus causing an imbalance in our metabolism to burn fat. The reason for our extra weight can also be attributed to the many grains and starches in our diet (pasta, rice, breads, and potatoes). The Zone Diet's approach calls for a return to the diets of our ancestors where meat, fruits, and vegetables are the main dietary foods.
The Zone Diet suggests that you need the right ratio of carbohydrates to proteins and fats in order to control the insulin in the bloodstream. Too much of the hormone (insulin) can increase fat storage and inflammation in the body (conditions that are associated with obesity, type 2 diabetes and heart disease). Sears asserts that by using the Zone Diet, you are actually optimizing the body's metabolic function. Through the regulation of blood sugar, you allow your body to burn excess body fat.
Although you are not prohibited from any particular food group, it is best to avoid food with high fat and carbohydrates such as grains, starches, and pastas. The ideal sources of carbs are fruits and vegetables and for monounsaturated fats olive oil, almonds, and avocados are recommended. The Zone Diet claims to use food as a drug for overall good health, weight loss and prevention or management of heart disease and diabetes.
Sears says that you can test to see whether you are 'hormonally' correct by eating following the Zone diet and see how you feel four hours later. To simplify the Zone Diet, fill one-third of a plate with low-fat protein, and then two-thirds with fruits and vegetables.
Celebrities and some health experts say that the Zone's recommendations do not stray far from the USDA's (United States Dietary Association) dietary guidelines and therefore are advocates of the Zone Diet. Others argue that the Zone Diet has flawed ratios but Sears argues that the Zone diet is a low-glycemic-load diet that has adequate protein. .
A critic of the Zone diet such as the AHA (American Heart Association) classifies the Zone Diet as high protein and does not recommend the Zone Diet for weight loss. They contend that the Zone Diet has not been proven effective in the long term for weight loss. The AHA issued an official recommendation warning against diets like the Zone Diet. They believe that the Zone Diet is hazardous as it restricts the intake of essential vitamins and minerals present in certain foods. The AHA also contends that the protein ratio in the Zone diet is too high even if the minimal fat ratio is good. Robert H. Ecker M.D of the A.H.A. finds the Zone Diet's theory on insulin flawed and argues that there is no scientific proof that the hormone insulin plays a big role in weight regulation.
Tuesday, June 1, 2010
Bulk Up Your Diet With Negative Calorie Foods!
Did you know that there are some foods, which require more energy to metabolize than we obtain from eating them? This result is usually referred to as the negative calorie effect. A simple example is water.It supplies zero calories, but requires energy to swallow and warm to
body temperature.
Below is a list of other foods, which although they provide calories, the amount is less than we need to do nothing. We call this Basal Metabolic Rate..(BMR). That's the amount of energy we need to breathe, circulate the blood, remove the toxins and filter it. That doesn't count the energy we need to get out of bed, bathe, use the toilet and dress. We call these
foods negative calorie foods, (N.C.Fs.).
These must be a tremendous boost for someone wanting to lose weight.Yes, but only if used properly. Healthy diet plans use items from all the main food groups. From these, we get the nutrients to make the building blocks, which are necessary to maintain the body in a healthy
state. A diet consisting of N.C.Fs., would result in us drawing our energy requirements from our muscles. This results in weakness and wasting of the body. Anorexics are a prime example.
So how can we use N.C.Fs. without harming ourselves?
The answer is quite simple. Use them as part of, and to bulk up a balanced calorie-wise diet. For example, 1/2 grapefruit(vitamin C, fibre) 1 egg-white (protein) 2 slices melba toast (carbohydrate) pat of margarine (non-saturated fat) 1 cup of 1% milk (protein, carbohydrate, low-fat, calcium, vitamins) makes an excellent low calorie but nutritious breakfast.
Here is the list.
* Apples
* Asparagus
* Beets
* Blueberries
* Broccoli
* Cantaloupes
* Carrot
* Cauliflower
* Celery stalk
* Celery root
* Cranberries
* Cucumbers
* Eggplant
* Endives
* Garden cress
* Garlic
* Grapefruit
* Green beans
* Green cabbage
* Lamb's lettuce
* Lemons
* Lettuce
* Onions
* Papayas
* Pineapples
* Prunes
* Radishes
* Raspberries
* Spinach
* Strawberries
* Tangerines
* Tomatoes
* Turnips
* Zucchini
Use it wisely, and good health.
body temperature.
Below is a list of other foods, which although they provide calories, the amount is less than we need to do nothing. We call this Basal Metabolic Rate..(BMR). That's the amount of energy we need to breathe, circulate the blood, remove the toxins and filter it. That doesn't count the energy we need to get out of bed, bathe, use the toilet and dress. We call these
foods negative calorie foods, (N.C.Fs.).
These must be a tremendous boost for someone wanting to lose weight.Yes, but only if used properly. Healthy diet plans use items from all the main food groups. From these, we get the nutrients to make the building blocks, which are necessary to maintain the body in a healthy
state. A diet consisting of N.C.Fs., would result in us drawing our energy requirements from our muscles. This results in weakness and wasting of the body. Anorexics are a prime example.
So how can we use N.C.Fs. without harming ourselves?
The answer is quite simple. Use them as part of, and to bulk up a balanced calorie-wise diet. For example, 1/2 grapefruit(vitamin C, fibre) 1 egg-white (protein) 2 slices melba toast (carbohydrate) pat of margarine (non-saturated fat) 1 cup of 1% milk (protein, carbohydrate, low-fat, calcium, vitamins) makes an excellent low calorie but nutritious breakfast.
Here is the list.
* Apples
* Asparagus
* Beets
* Blueberries
* Broccoli
* Cantaloupes
* Carrot
* Cauliflower
* Celery stalk
* Celery root
* Cranberries
* Cucumbers
* Eggplant
* Endives
* Garden cress
* Garlic
* Grapefruit
* Green beans
* Green cabbage
* Lamb's lettuce
* Lemons
* Lettuce
* Onions
* Papayas
* Pineapples
* Prunes
* Radishes
* Raspberries
* Spinach
* Strawberries
* Tangerines
* Tomatoes
* Turnips
* Zucchini
Use it wisely, and good health.
Subscribe to:
Posts (Atom)