Tag Archive for 'insulin'

Certain foods may increase your appetite

We have often heard that when it comes to dieting, it doesn’t matter what you eat as long as you burn more calories than you consume. But many seasoned dieters have come to understand a harsh reality for those who love bread, pasta and sweets. It seems that specific foods seem to enhance the appetite, sometimes making it incredibly hard to stop after seeming to lose a sense of fullness.

A new book called “The Skinny”, by Louis J. Aronne, the veteran director of the Comprehensive Weight Loss Program at New York Presbyterian Hospital/Weill Cornell Medical Center,  explains this theory. In the book, he talks about how what you eat and when you eat can make a huge difference in your appetitie, satisfaction and willpower.

Dr. Aronne has treated patients for 23 years. He has come to believe that refined carbohydrates and high sugar foods encourage what he calls “fullness resistance.” He says that they seems to tamper with the elaborate hormonal messages the body normally sends to the brain to cue that it’s time to stop eating. Instead, people actually can fell hungrier. This happens when refined carbohydrates cause blood sugar levels to rise, making insulin increase and pushing blood sugar down again, which causes rebound hunger. This insulin surge also has a blocking impact on leptin, the hormone that is secreted by fat cells that usually tells the body to stop eating. Obese people have plenty of leptin, but sometimes it doesn’t reach the brain or the brain gets resistant to it. Dr. Arboone writes that “this is not a failure of willpower, it’s a physical mechanism.” This opens the door for diabetes, because the body becomes resistant to insulin. Other researchers have claimed that refined foods with a lot of  sugar and carbohydrates can be as addictive as alcohol and tobacco.

The good news is that eating foods that are high in protein, vegetables, fiber and water have the opposite effect according to Dr. Aronne. In his plan, he suggests changing what you eat, one meal at a time, to bring back your sense of fullness.

For breakfast, he says to load up on lean protein, preferably from egg whites or a protein shake. When you eat this way in the morning, it can reduce hunger throughout the day.

As for lunch, many dieters like to skip this meal, but going for more than 5 hours without food makes hunger hormones increase and fullness hormones drop, sending more of the calories eaten at dinner right to the fat cells. Dr. Aronne suggests beginning lunch with a salad; at least 2 cups of lettuce. After this, have more vegetables and then a lean protein. Try to eliminate the cheese, croutons, bacon and creamy dressings, he says. He claims that using vinegar by itself will decrease your appetite and slow blood sugar spikes.

Obese people eat usually eat more calories at dinner than slimmer people. For dinner, eat plenty of salads, clear soups or high-protein appetizers. In contrast to other diet programs, Dr. Aronne permits a half cup of grains or a small dessert at the end of the meal when you are still a little hungry. He also says that eating bread before dinner can make people lose their sense of fullness and actually cause them to eat more. He cautions that drinking alcohol can lower your resistance and promote fat storage.

When it comes to snacks, he believes that mid-morning and mid-afternoon snacks can be like appetite suppressants, because they prevent blood sugar from getting too low; just make sure your snacks are consistent with the plan.

As for beverages, we all know that juice and sweet soda can add lots of extra calories, and some studies have revealed that even artificial sweetened drinks can cause people to crave real sweets during the day. Try to cut back on all liquid calories and just drink water.

The weight-loss debates and theories will continue to be in the forefront of the news. Dr. Aronne says that because every one’s metabolism is not the same, and weight loss is a very complicated area, he suggests trying his plan for yourself. He says to experiment by having 200 calories of egg white or protein shake for breakfast and then have 200 calories of juice  on another day, and observe  your hunger hour by hour.

Brown fat may be key element in future obesity treatments

We all know that there is both good and bad cholesterol. Now, it seems, there is good and bad fat as well. Scientists have long believed that this good fat was usually gone or inactive once adulthood is reached.

So what is so special about this fat? Well, it induces the body to burn calories so it can create body heat. This fat is important in infancy, because it helps to keep the newborn warm.

Recently researchers performing three separate studies – from Boston, Finland and the Netherlands – have found that some of the good fat remains in adulthood. This good fat affects metabolism and could possibly help people lose weight in the future.

An endocrinology and metabolism researcher at the National Institute of Diabetes and Digestive and Kidney Diseases, Dr. Francesco Celi, announced that the studies reveal that this certain kind of fat burns substantial amounts of energy. He also said that this fat could be used in a pill that could rev up the fat.

Dr. Louis Aronne, former president of the Obesity Society and a weight control expert at Weill Cornell Medical Center in New York, proclaimed that the discoveries are the most convincing proof of the function of this fat in regulating body temperature and weight. He said that because the fat seems to be eliminating calories, it could possibly be used for a sort of ‘exercise-in-a-pill’ treatment. He also said that any treatment for obesity that is developed from this special fat could also be a possible treatment for diabetes.

This good fat is brownish in color, while the more prevalent fat is whitish or yellow. The neck and under the collarbone are the areas in which the brown fat is mostly stored. The waistline is the area that the white fat is mostly found. There it stores excess energy and releases chemicals that control metabolism and insulin use.

The existence and occurrences of the brown fat was recorded by the three research groups by looking at tissue samples taken from patients. High-tech imaging was used to reveal how much sugar and calories that the fat burned.

The New England Journal of Medicine published the results of these studies on Thursday, April 9, 2009.

Too much protein and fat could increase risk for developing diabetes

About 550,000 people suffer from diabetes and approximately 300,000 have pre-diabetes in North Carolina. People over age 65 and blacks tend to be more prone to this chronic disease. North Carolina has the 10th highest ratet of diabetes in the U.S.  The national average is 7.3 percent and it is 8.5 percent in North Carolina. The main killers of people with this disease are heart attacks and strokes. Diabetes also can cause kidney failure, blindness, depression, amputations, nerve damage and periodontal disease.

Even though diabetes has extensively increased in North Carolina and the U.S. over the last ten years, doctors are just now starting to figure out the mystery behind the intricate cycle of cellular occurrence that trigger the development of this persistent disease. Although a cure is not yet on the horizon, researchers are developing new targets for drug therapies.

Diabetes occurs when the body doesn’t make or successfully use insulin. Insulin is a hormone created in the pancreas which enables cells to convert sugars and starches for energy. People who are overweight have an increased chance of getting diabetes, because eating too much, and not exercising enough can exhaust the body’s capacity to use insulin. But important to mention is that not everyone who is heavy will develop the disease and not everyone with diabetes is overweight.

On April 7, a paper was published revealing that Duke University researchers have a new discovery that suggests that diabetes could be affected by protein and not sugary carbohydrates, which has long been thought of as the main culprit. The Duke researchers found that overweight people actually metabolize protein differently than leaner people, especially when it is part of a high-fat diet.

When too much protein and fat are eaten, the metabolic byproducts can not be totally absorbed, so they surge into the bloodstream. One of those byproducts is an enzyme that affects insulin sensitivity. A diet that is predominantly heavy in fat and protein causes the body to change to a different way of becoming insulin resistant.

Christopher Newgard, the director of the Sarah W. Stedman Nutrition and Metabolism Center at Duke and lead author of the study, said that protein is usually viewed as a good nutrient and it can be when people exercise and eat in moderation. The problem, she suggests, is the typical U.S. and Western society, where 65 percent are overweight due to a sedentary lifestyle and a diet that is too heavy in fat and protein.