Tuesday, December 11, 2012

Don’t Drink Heavily To Prevent Stroke!

Indulge in binge drinking is bad because the risk of developing heart disease becomes higher. But heavy drinkers of alcohol might also have other problems such as high blood pressure.
 
According to researchers from the University of Lille Nord de France, people who drank heavily might be getting a brain hemorrhage at a relatively early age. Hemorrhage is a type of stroke where ruptured blood vessels leak blood into the brain. Their findings were published on September 11, 2012 in journal ‘Neurology’.
 
They followed 540 patients with an average age of 71 who had hemorrhage. Among the participants, 137 people (or 25 percent) were heavy drinkers, which was defined as having 3 or more drinks a day or about 1.6 ounces per day of pure alcohol. These participants also underwent CT brain scans and their medical records were reviewed.
 
It was found that the heavy drinkers got brain hemorrhage typically at the age of 60, compared to the age of 74 among patients who were not heavy drinkers. Heavy drinkers were not only younger when they got their stroke they were also relatively healthy and less likely to have any history of heart disease, stroke or mini-stroke symptoms, compared to those who were not heavy drinkers.
 
Furthermore, the findings also discovered that when the stroke occurred in a deep part of the brain, heavy drinkers younger than 60 were more likely to die within 2 years than those who did not drink heavily. Even after discounting for factors like smoking habits, the heavy drinkers were twice as likely to die as compared to one-third of those who did not drink heavily.
 
In the study, heavy drinkers were found to have lower levels of certain substances that allow blood to clot, though those levels were still within the normal range.
 
The findings, however, could not prove that heavy drinking alone caused strokes at an earlier age. There might be other factors involved. For instance, heavy drinkers in the study were often smokers: 42 percent of them smoked compared to 12 percent of the other patients.
 
Since heavy drinking has long been considered a risk factor for strokes, this indicates that there are surely some reasons to believe that heavy drinking can be a problem.
 
Of course, this does not mean that drinking is strictly prohibited. People can still drink but moderation is the key. Remember this, excessive alcohol consumption is bad for the body in a number of ways.

Tuesday, December 04, 2012

Why Lack Of Sleep Could Lead To Weight Gain?

Besides many causes that could make a person gains weight, lack of sleep is another one that could also cause people to put on weight in the long run.
 
In fact, earlier research done by researchers from the Department of Neuroscience at Uppsala University had reported on October 21, 2009 in ‘American Journal of Clinical Nutrition’ that the energy expenditure of young men with normal weight were curbed after a night of total sleep loss. They also showed that these young men had raised their levels of hunger indicating that an acute lack of sleep might affect human’s food perception.
 
The same researchers have taken a step further. On January 18, 2012, they together with researchers from other European universities reported in ‘The Journal of Clinical Endocrinology and Metabolism’ that a specific brain region that contributes to a person’s appetite sensation can be more activated in response to food images after a night of sleep loss than a night of normal sleep.
 
They had systematically examined which regions in the brain, responsible for appetite sensation, are influenced by acute sleep deprivation. Using magnetic imaging (MRI), they studied the brains of 12 normal-weight males while they were viewing images of foods.
 
Results after a night of normal sleep were compared with those obtained after a night without sleep. It was found that the participants showed a high level of activation in an area of the brain that is involved in a desire to eat. The findings explained why poor sleep habits could affect people’s risk of gaining weight in the long run.
 
In modern society, insufficient sleep has become a growing problems among many people. This might in part contribute to the growing levels of obesity, which is believed to be the risk factor for many diseases including diabetes, heart disease, high blood pressure and stroke. It is, therefore, paramount that people should try to sleep about 8 hours every night just to keep a stable and healthy body weight.

Monday, November 26, 2012

Why Should Women Breastfeed Their Babies?

Health experts usually advise mothers-to-be to breastfeed their babies for the first 6 months and then to continue breastfeeding along with solid food until their babies are one year old.
 
Breastfeeding is generally believed to benefit both the babies and the mothers. Studies had shown that breastfeeding help protect babies against common ills like diarrhea and middle ear infections. Meanwhile, research also found that women who breastfeed have lower risk of diabetes, high cholesterol and heart disease later in life.
 
A study that was published on October 12, 2011 in the ‘American Journal of Epidemiology’ reported that mothers, who breastfed for at least 6 months, might have a lower risk of getting high blood pressure over 14 years, comparing with those who had only bottle-fed.
 
Researchers from the University of North Carolina, Chapel Hill examined the correlation between breastfeeding and later risk of high blood pressure among 55,636 female participants in the long-running Nurses’ Health Study II. All these women had at least one baby.
 
From 1991 to 2005, 8,861 women were diagnosed with high blood pressure. The risk of developing high blood pressure for women who did not breastfeed their first child were 22 percent higher than those who had exclusively breastfed their child for 6 months. In the meantime, the researchers also found that women who had either never breastfed or done so for 3 months or less were almost 25 percent more likely to develop high blood pressure than those who had breastfed for at least a year. Factors such as diet, exercise and smoking habits had been taken into consideration before arriving the results.
 
However, the researchers admitted that none of their findings have proven that breastfeeding itself offers long-term protection against high blood pressure. It is possible that there were some other factors like a stressful working environment that hindered women from breastfeeding and contributed to their blood pressure.
 
On the other hand, it is also likely that breastfeeding has direct benefits. In fact, animal research has found that the hormone oxytocin, which is involved in breastfeeding, has lasting effects on blood pressure. In addition, it is known that women tend to have a lower short-term blood pressure immediately after breastfeeding.
 
It is estimated by the researchers that 12 percent of high blood pressure cases among women with children might be linked to suboptimal breastfeeding, provided if breastfeeding is in fact protective. They also argued that if this is a casual relationship, taking steps to clear obstacles for breastfeeding could actually help women’s health later on.

Friday, November 16, 2012

Are All Fast Food Tied To Heart Disease?

People like fast food because it can be prepared and served very quickly. However, fast food has been linked to many health disorders including diabetes, heart disease, high blood pressure and stroke.
 
Now the question is: Are all fast food the same?
 
In a paper published on July 2, 2012 in the journal ‘Circulation’, a group of researchers from the University of Minnesota School of Public Health, National University of Singapore and University of Pittsburgh Graduate School of Public Health reported that American style fast food such as burgers and fries would raise the risk of diabetes and heart disease but the Asian fast food like noodles and dumplings would not.
 
The study aimed to examine the link between Western-style fast food intake and the risk of incident Type-2 diabetes and coronary heart disease (CHD). It involved 63,257 Chinese Singaporean aged between 45 and 75 who enrolled in the Singapore Chinese Health Study from April 1993 to December 1998. Through process of in-person interview, these individuals answered questions on usual diet, demographics, height and weight, use of tobacco, usual physical activity, menstrual and reproductive history (women only), medical history, and family history of cancer. These participants were followed for about a decade.
 
For CHD mortality, 52,584 participants were included and 1,397 deaths were found through December 31, 2009, via registry linkage. For Type-2 diabetes, 43,176 participants were included and 2,252 cases were identified during the follow-up interview (1999–2004).
 
The findings showed that those who consumed fast food 2 or more times a week had 27 percent higher risk of diabetes and 56 percent higher risk of cardiac death than those who ate little or no fast food. Among 811 participants who ate Western-style fast food 4 or more times a week, the risk of cardiac death was raised by 80 percent. Even after adjusting for other factors such as age, sex, weight, smoking status and education level, the findings still held.
 
On the other hand, the study did not find any association between more cases of Type-2 diabetes and cardiac deaths with eating Eastern fast food like dim sum, noodles and dumplings.
 
It is interesting to note that Singaporeans, who ate Western fast food, were more likely to be younger, educated and physically active, and were less likely to smoke, than those who preferred a more traditional diet.

Friday, November 02, 2012

Should You Take Medicines If You Have Prehypertension?

A person’s blood pressure is measured by 2 readings, systolic (top reading) and diastolic (bottom reading). For instance, a person’s blood pressure is considered normal if the blood pressure readings stay below 120/80 mm Hg. When the readings are persistently at 140/90 mm Hg or higher, this person is said to have hypertension, or more commonly known as high blood pressure.
 
However, there is a group of people whose blood pressures are between 120/80 and 139/89 mm Hg. They are said to have prehypertension. In the United States, it is estimated that more than 50 million adults develop prehypertension. If these people do not monitor and manage their blood pressure properly, they are very likely to become victims of hypertension.
 
Most people with hypertension are not aware of their condition. But hypertension is a risk factor for a number of disorders including heart disease, stroke, kidney disease and peripheral arterial disease.
 
In a paper published online on December 8, 2011 in ‘Stroke’ (Journal of the American Heart Association), researchers from the Harrington-McLaughlin Heart and Vascular Institute in Cleveland, Ohio found that people with prehypertension had a lower risk of stroke when they took blood pressure-lowering medicines.
 
After examining data collected from 16 studies, researchers compared anti-hypertensive drugs against placebo in 70,664 people with average blood pressure within the pre-hypertensive range. They found that patients who took blood pressure-lowering medicines had a 22 percent lower risk of stroke, comparing to those taking a placebo.
 
While there was no significant reduction in the risk of heart attack, there was a trend toward lower cardiovascular death in patients who took blood pressure medicines as compared with those on placebo. 169 patients had to take the blood pressure-lowering medicines for an average of 4.3 years in order to prevent one stroke in the study population.
 
This clearly contradicted to the American Heart Association’s guidelines, which recommend lifestyle change instead of taking medications for people with prehypertension to lower their blood pressure. The suggested changes in lifestyle include weight loss, physical activity, a diet rich in fruit and vegetables and low in salt and fat, and keeping alcohol consumption moderate (no more than 2 drinks for men and no more than 1 drink for women per day).
 
Though the researchers did not insist that people with prehypertension should take medicines instead of carrying out lifestyle changes, they stressed that taking blood pressure medicines can somewhat complement the lifestyle changes, as shown in their findings. Nevertheless, they urged medical community to discuss extensively about the cost of long-term therapy and the risks of taking blood pressure medicines before changing the guidelines.

Friday, October 19, 2012

How Weight Training Can Curb Diabetes?

Diabetes is a medical condition in which a person has high blood sugar. If diabetes is developed because this person’s body does not produce insulin, the condition is called Type-1 diabetes. This person has to inject insulin or wear an insulin pump. Insulin is necessary for the body to be able to use glucose for energy.
 
On the other hand, if the diabetic condition is a result of insulin resistance (insufficient insulin is produced or the body cannot use insulin properly), the condition is referred to as Type-2 diabetes.
 
Type-2 diabetes is the most common form of diabetes. As of 2012, an estimated 346 million people globally have this type of diabetes.
 
A diabetic who does not receive proper treatments might develop many complications, including heart disease, hypertension, stroke, chronic renal failure, peripheral arterial disease and retinal damage.
 
While adequate medical treatment is a must for diabetics, lifestyle factors such as maintaining a healthy body weight and physically active are equally important.
 
It is known that aerobic exercise is beneficial for diabetes, as indicated by many studies. But, there is so far none have looked at weight training.
 
Researchers from Harvard School of Public Health and the University of Southern Denmark reported online on August 6, 2012 in the ‘Archives of Internal Medicine’ that for diabetes, weight training is probably as important as aerobic training. They used data on more than 32,002 male health professionals, who answered questionnaires every 2 years from 1990 to 2008.
 
It was found that on average, 4 out of 1,000 men developed Type-2 diabetes every year. The risk of getting this disease was only 50 percent for men who did cardio or aerobic workouts at least 150 minutes a week (30 minutes a day, 5 times a week), compared with those who did not do any cardio exercise. The workouts included brisk walking, jogging or playing tennis.
 
For men who did weight training for 150 minutes (30 minutes a day, 5 times a week) or more, their risk of developing the disease was reduced by about 33 percent compared to those who never lifted weights, independently of whether or not they did aerobic exercise.
 
Though weight training does increase muscle mass and can reduce abdominal obesity, it does not cut overall body mass. In fact, any kind of exercise is good to prevent diabetes. Weight lifting, however, can be incorporated with aerobic exercise to get the best results.
 
While appropriate diet is important for diabetes prevention, it is also important for people who already have diabetes to have adequate exercise to help control reduce high blood sugar.

Friday, October 12, 2012

Why Nut Consumption Is Good For Heart?

While nuts such as almonds, walnuts, Brazil nuts, hazelnut and macadamia are rich in oil content, they are also ideal sources of nutrients. Several studies have reported that people who consumed nuts regularly were less likely to suffer from heart disease and stroke. There were many other researches linking consumption of nuts to lower bad cholesterol (low-density lipoprotein or LDL), too.
 
On September 12, 2011, researchers from the University of Barcelona and the Human Nutrition Unit of the Rovira i Virgili University found the association between eating nuts and higher levels of serotonin in the bodies of patients with metabolic syndrome. Their findings can be found in the American Chemical Society’s (ACS) ‘Journal of Proteome Research’.
 
Serotonin, which helps transmit nerve signals and lower feelings of hunger, makes people feel happier and improves heart health. Only one ounce of mixed nuts (raw unpeeled walnuts, almonds and hazelnuts) can produce good effects.
 
According to researchers, the increased rate of obesity around the world indicates that more people have metabolic syndromes. As estimated by the World Health Organization (WTO), metabolic syndrome affects 20 percent of the adult population. In the United States, the prevalence of metabolic syndrome is close to 25 percent in adults.
 
Symptoms of metabolic syndrome include excess abdominal fat, high blood sugar and high blood pressure, which in turn raise the risk of developing Type-2 diabetes and heart disease. Health experts believe changes in diet might help patients reduce excess weight. Among the changes, regular consumption of nuts has been recommended to fight the metabolic abnormalities associated with metabolic syndrome.
 
The study looked at 22 people with metabolic syndrome who were given a nut-enriched diet for 12 weeks. The researchers compared them to another group of 20 people who were told to avoid nuts.
 
After analyzing the broad spectrum of compounds excreted in the patients' urine, researchers found that consumption of nuts had boosted patients' levels of serotonin metabolites in urine and suggested the role of serotonin in the beneficial effects of nuts.
 
Researchers claimed that their study provided the first evidence in humans of the beneficial effects of nut consumption in reducing levels of substances in the body associated with inflammation and other cardiovascular risk factors in patients with metabolic syndrome.

Saturday, October 06, 2012

Clean Your Teeth To Prevent Heart Disease!

Not many people would like to go to see their dentists voluntarily to have their teeth scraped and cleaned regularly. They visit their dentists only when there is toothache or any discomfort in their teeth.
 
Perhaps people should start visiting their dentists regularly because a recent study, which was presented on November 13, 2011 at an American Heart Association (AHA) meeting in Orlando, Florida, reported that regular professional cleaning of teeth could help reduce the risk of heart attack or stroke.
 
In the study, researchers from Taipei Veterans General Hospital, Taipei, Taiwan looked at records of 102,620 patients, who did not have a history of heart attack or stroke. These participants were followed for an average of 7 years.
 
Their findings showed that 226 out of 51,108 people who had their teeth cleaned at least once suffered a heart attack, while 1,168 had a stroke. For those who never had their teeth cleaned, 507 out of 51,512 had a heart attack and 2,480 suffered a stroke. People who had their teeth scraped and cleaned by dentists more than once every 2 years had a 24 percent lower risk of heart attack and 13 percent lower risk of stroke compared to those who had never had a dental cleaning.
 
People who had a cleaning less than once every 2 years had a 13 percent lower risk of heart attack and a 9 percent lower risk of a stroke compared to those who never had one.
 
According to researchers, participants who got tooth scaling at least once a year have better protection from heart disease and stroke. It appears that professional tooth scaling tends to lower inflammation-causing bacterial growth that could lead to heart disease or stroke.
 
Nevertheless, the study did not adjust for heart attack and stroke risk factors like weight, smoking and race, as these data were not included in the Taiwan National Health insurance database (source of information used in the analysis).
 
Researchers also stressed that more studies are required to help explain how tooth scaling helps improve heart and blood vessel function and to see if it also lowers the risk of other illnesses like cancer and immune diseases.