Scientists have invented a replacement hand that’s controlled by your mind
A man who lost part of his arm in a car crash has been trying it out, after doctors attached it to him using special wires. By the end of the experiment he could wiggle the robotic fingers, make a fist and grab objects with his new hand. It’s called the Life Hand. It has cost £2m and has taken the team five years to build.
Testing the new technology
After losing his forearm in a car crash, 26-year-old Pierpaolo Petruzziello agreed to participate in a one-month medical experiment to test out a robotic hand that can be controlled by a patient’s thoughts. Now, doctors say that the test run was successful, and may open the door for major developments to come.
More progress to come
Unlike most other prosthetics, this robot hand wasn’t implanted directly into Petruzziello, but was connected with a series of electrodes that were attached to the nerve endings on his severed arm.
The Associated Press reports that, at a press conference, the medical team played video footage of the patient controlling the hand’s actions with his mind as the device sat next to him. During the experiment, he learned to wiggle his fingers, make a fist, and grab objects. Said Petruzziello, “It felt almost the same as a real hand… you can’t imagine what they did to me.” Neurologist Paolo Maria Rossini jokingly added, “Some of the gestures cannot be disclosed because they were quite vulgar.” (Awesome.)
See the video here
This experience is very helpful for patients who have suffered only partial loss of a hand or arm
Other similar thought-controlled prosthetic experiments have been successful in the past, but all of those only worked when a limb was completely severed. Scientists hope that this development may offer solutions for patients who have suffered only partial loss of a hand or arm. Although the project lasted only a month, it was still the longest that electrodes had remained connected to a patient’s nervous system.
Further challenges ahead
Doctors acknowledge that the next challenge is to develop a more durable device that can function for years on end. It’s clear, though, that the significance of this particular success shouldn’t be downplayed. There may still be barriers to overcome, but if prosthetic science progresses as rapidly as it has, it should only be a matter of time before someone smashes through them — with a robotic fist or otherwise.
Differentiating between good carbohydrates and bad Carbohydrates
If you’re looking for a list of good carbs and bad carbs, you might need to change your ideas about dieting a little. While certain carbs that are worse for your body than others, there aren’t really good carbs and bad carbs, just good amounts and less healthy amounts.
Counting Carbs
It seems like more and more people are counting carbs, or at least paying more attention to the amount and type of carbs they eat. Popular diets such as the Atkins Diet have convinced people that there are good carbs and bad carbs, and the bad carbs need to be avoided and the good carbs limited.
While it’s a good idea to keep your intake of “bad” carbs in check, many health experts recommend that carbohydrates should make up at least 55 percent of a person’s total caloric intake, while others say that number should be as high as 65 percent.
This is fairly high so you don’t want to discount carbs. At the same time, it’s clear these people aren’t talking about the carbs you’ll find in candy, cookies and other highly processed foods, so that’s where the idea of a list of good carbs and bad carbs comes from.
A List of Good Carbs and Bad Carbs
If you had to make a list of carbs that you should eat more of versus carbs you should avoid, it basically breaks down into simple carbs being “bad” and complex carbs being “good.”
Complex and simple are terms that have to do with how the food is broken down into energy (sugar) in the body. Simple carbs are broken down quickly, giving your blood sugar a spike and sending you running back to the kitchen or snack machine within hours of your last fix.
Complex carbs are the ones that give your body the best fuel. They are usually found in foods high in fiber, which break down more slowly, giving you a more steady blood sugar level through the day and making you feel less hungry and irritable when mid-afternoon rolls around.
It’s a great idea to get more of these carbs into your daily diet.
Here is a list of good carbohydrates :
- Fruit
- Vegetables
- Whole grains and foods made from whole grains, such as bread and cereal
- Beans
- Nuts
- Legumes
Bad carbohydrates are :
- Refined grains like white bread and white rice
- Processed foods such as cake, cookies and chips
- Soft drinks
- Alcohol
Just because these foods have less desirable carbs does not mean you should kick them out of your life forever. A list of good carbs and bad carbs should not be seen as a strict rule. Yes, you should get most of your carbs each day from the “good” list, but you certainly don’t have to cut our alcohol or skip the birthday cake, as long as you don’t make it an every day or every meal thing.
Cutting carbs for Weight Loss
Cutting back on the bad carbs can help you lose weight, as well as give you a feeling of more energy and less irritability. Carbs are the fuel that makes your body run. Putting the right fuel in your engine makes a world of difference.
Because the good carb foods tend to have higher fiber and lower calories than many processed bad carb foods, you’ll find yourself feeling fuller while eating fewer calories though it’s possible you’ll be eating a bigger volume of food.
If you think about the kinds of foods you’re adding and the ones you’re giving up, then this makes sense.
It would take a lot more fruit to equal the same number of calories you’d eat in a candy bar, and you’ll probably feel satisfied after one piece or serving of fruit which is much lower in calories than the candy bar. Even better, you’ll feel satisfied for a long period of time and won’t feel the need for another unhealthy snack later in the day.
Sugar and its effects your health
Can you go for more than a day without eating sugar in any form? Do you drink soft drinks or milkshakes, eat Danish pastry, fruit yogurt (a 6 oz. cartoon has 7 teaspoons of sugar or honey), donuts, bagels, cakes, cookies, most bran muffins or many other sugary items. Can you go without any other foods that contain words ending in “ose” such as sucrose, fructose, etc., or contain corn syrup, corn sweetener, honey, barley malt, maple syrup, sugar cane solids, or rice syrup? Do you pig out on a carton of ice cream or a bag of cookies? If you find that sugar is part of your diet every day, you may have a problem.
The problem with sugar
The average person eats 153 pounds of sugar a year. That is equivalent to over 1/2 cup of sugar a day. The teenage boy eats twice that much. So you say, “Who cares?” What is wrong with sugar?
There is much scientific evidence written in many medical journals showing that sugar can ruin your health. Do you have any of the following symptoms? Do you fall asleep after meals, have allergies, gas, bloating, extended stomach after meals, joint pains, headaches, chronic fatigue, constipation, diarrhea, over weight, skin problems, high blood pressure or other symptoms? These all can be signs of a sugar problem.
Here’s the problem: The human body was simply not designed to handle refined sugars.Refined sugar is new to the human diet. Metabolizing refined sugar is quite a challenge, but if forced to, the body will struggle to cope with it. This struggle causes serious disturbances, and after time, disease is the guaranteed result.
We have evolved from early man having digestive mechanisms to digest foods. We do not have the digestive mechanisms to digest the glut of sugar that we are eating on a daily basis!
Sugar in your body
Recently, information has emerged as to what happens to the minerals in the body when sugar and other abusive foods are eaten.
Sugar throws body chemistry into biochemical chaos lasting for six to eight hours after consumption. During this period, hormone, fat, carbohydrate, and protein metabolism are greatly disrupted.
After consumption, refined sugar is rapidly absorbed by the body, which dangerously increases the sugar content of the blood. Excess sugar causes production of excess insulin, which signals cells to take up sugar. Cells then absorb sugar, to get it out of the bloodstream. This solves one problem but creates another: Now the body’s cells have too much sugar. To correct this imbalance, cells turn the sugar into saturated fats and cholesterol.
Increased insulin levels not only tell the body to store fat, but they also tell it not to release fat. This makes people get fat and stay fat. It causes fat to be deposited in our cells and organs, resulting in atherosclerosis, fatty liver and kidneys, and obesity.
These fats cause blood cells to become sticky thereby increasing the chances of blood clots, strokes and heart attacks. Sugar increases “bad” LDL cholesterol, decreases “good” HDL cholesterol, and increases triglyceride levels in the blood. If antioxidant vitamins and minerals are deficient, these triglycerides can be oxidized causing serious health problems. In addition, red blood cells are choked by the saturated fats and this reduces their ability to carry oxygen to our tissues.
Hypoglycemia (low blood sugar) is another problem caused by sugar consumption. When insulin is secreted into the blood, it makes blood sugar levels fall rapidly. Insulin levels remain high however, so the body continues to take up sugar beyond the point where it needs to. The result is hypoglycemia. Symptoms include weakness, dizziness, crying spells, insomnia, aggression, and depression.
Sugar in breakfasts or lunches can cause children to do poorly in school. They become hypoglycemic about 60 minutes after eating sugar and this affects brain function. Many teachers claim that their students are “brain dead” after lunch, and this is why.
Sugar-induced hormone imbalances tax and weaken the immune system to the point where it can no longer defend the body. When insulin causes blood sugar to fall excessively low, the adrenal glands secret hormones that pump blood sugar back up. Daily consumption of sugar causes an overworked biochemical balancing act resulting in adrenal exhaustion, which in turn decreases the body’s ability to respond to future stress. Adrenal exhaustion is now a common problem in the chronically ill.
Sugar quadruples adrenaline levels, while increasing both cholesterol and cortisone. Cortisone is known to depress immune function. Studies show that the ability of white cells to destroy harmful bacteria is reduced as sugar consumption rises. This is why children, who eat lots of sugar, are more susceptible to colds, flu, and other infections.
Another point is Fiber Deficiency : Humans were designed to derive energy from complex carbohydrates, which are naturally high in fiber. By contrast, a high sugar diet provides calories without the fiber that is essential to human health. Insufficient fiber causes materials to move too slowly through the digestive tract. This can cause constipation, which is a big problem in our society. It also causes waste to remain too long in the colon where it can serve as food for harmful bacteria, thereby producing gas and toxins, and promoting intestinal inflammation and bloating.
Conclusion
The bottom line is that sugar upsets the body chemistry and suppresses the immune system. Once the immune system becomes suppressed, the door is opened to infectious and degenerative diseases. The stronger the immune system the easier it is for the body to fight infectious and degenerative diseases.
Sugar is implicated in the following diseases and many more: allergies, arthritis, diabetes, hypoglycemia, osteoporosis, gallstones, kidney stones, headaches, yeast infections, and cataracts.
So if you have any of the symptoms or diseases mentioned, remove all forms of sugar from your diet for two weeks, I think that you will be pleasantly surprised. Not only will some of those symptoms disappear but you will be strengthening your immune system, allowing it to do the job it was meant to, defend you against foreign invaders.
Some of the other effects of sugar on the body are:
* Increases overgrowth of candida yeast organism
* Increases chronic fatigue
* Can trigger binge eating in those with bulima
* Increases PMS symptoms
* Increases hyperactivity in about 50% of children
* Increases tooth decay
* Increases anxiety and irritability
* Can increase or intensify symptoms of anxiety and panic in susceptible women
* Can make it difficult to lose weight because of constantly high insulin levels, which causes the body to store excess carbs as fat.
After breast cancer is gone, pain can linger for long
Even three years after finishing treatment for breast cancer, almost 50 percent of women report long-term pain, a new Danish study finds.
The research, published in the Nov. 11 issue of the Journal of the American Medical Association, strengthens earlier findings, said study senior author Dr. Henrik Kehlet, a professor of perioperative therapy at Rigshospitalet at Copenhagen University. But this work indicates which women are most likely to experience persistent pain.
“Several previous scientific reports have shown a risk of chronic pain after breast cancer surgery,” said Kehlet. The strength of this study, he noted, is the large number of participants — more than 3,000 — and the evaluation of many types of treatments.
Kehlet’s team reviewed questionnaires filled out by 3,253 women who had undergone breast cancer treatment in Denmark between 2005 and 2006. Their treatments varied and included breast-conserving surgery, mastectomy, radiation, chemotherapy and dissection of the lymph nodes.
The women were asked whether they experienced pain, in what areas of the body, how bad it was and how often they experienced it.
In all, 1,543 — 47 percent — reported pain in one or more areas. Of those, 52 percent reported severe or moderate pain.
Among those who had severe pain, 77 percent said they had it daily. For those who reported their pain as light, 36 percent had it every day. Pain was reported in the breast area, the armpit, the arm and the side of the body.
The research was funded by the Danish Cancer Society, Breast Friends and a private organization that funds science research, the Lundbeck Foundation.
Women under 40 were more than three times more likely to have chronic pain than older women, the researchers found. Those having radiation therapy were more likely to have pain than those who had chemotherapy. Dissection of the axillary (under arm) lymph node was associated with increased likelihood of pain compared to dissection of the sentinel lymph node (the first node to which the cancer is likely to spread).
Why does the pain linger?
“There are multiple mechanisms to explain the risk of chronic pain,” Kehlet said, “such as young age, risk of nerve damage during axillary dissection, radiation therapy or a general pain hyper-responsiveness in some patients.”
More research is needed on the pain mechanism in those who experience high levels of discomfort, he said. The focus for now should be on identifying patients at high risk for pain and providing preventive treatment and nerve-sparing treatment when possible.
The results do not surprise Dr. Robert H. Dworkin, a pain specialist and professor of anesthesiology, neurology, oncology and psychiatry at the University of Rochester School of Medicine and Dentistry in New York, who has also published on lingering cancer pain.
But the findings may come as a surprise to oncologists and others who treat cancer patients, he said. “Women tend not to tell their surgeons about this continuing pain,” he said, citing clinical experience. Why? “They fear that the fact they are in pain might mean a recurrence, and they don’t want to deal with it,” he said. Or, “they don’t want to hurt the oncologist’s feelings.”
A third reason is “they don’t want to distract the physician from thinking about the cancer,” he said.
Even pain specialists can’t say for sure why the pain lingers. “We have little understanding of what causes this kind of pain,” Dworkin said.
A woman in pain after breast cancer treatment “should not be shy in talking to her physician about it,” Dworkin said. He advises such women to ask for a referral to a pain specialist.
