Obesity and Diseases
Obesity and heart diseases:
In a new study it was proved that the percentage of overweight and obese adults in the United States has increased over the past two decades - undermining efforts to reduce heart disease risk factors.
Also the rising obesity is associated with the lower likelihood of having optimal blood pressure and blood sugar levels.
Another study indicates that weight loss may correct structural heart damage in obese patients.
The researchers analysed data from the National Health and Nutrition Examination Survey (NHANES) from 1988ΓΆβ'2006, representing 8,264 adult men and women, 20 to 85 years old. All had complete risk factor profiles of their blood pressure, fasting glucose, low density lipoprotein (LDL or 'bad' cholesterol) and smoking status.
The researchers had found that during this time period, the average body mass index (BMI) increased from 26.5 to 28.8 kg/m2, a significant change. In the same period, the number of people with optimal blood pressure decreased from 48 percent in NHANES III, 198894, to 43 percent in NHANES in 200506, and the number of people with optimal fasting glucose decreased from 67 percent to 58 percent.
Both blood pressure and blood glucose are closely linked to obesity and these adverse trends track with the change in body weight.
Another study was funded by the Donald W. Reynolds Foundation (Las Vegas, Nevada) demonstrates a stronger association of WHR (waist-to-hip ratio) with subclinical atherosclerosis as compared with BMI or WC (waist circumference) in a large, population-based cohort.
In analyses adjusted for cardiovascular risk factors, WHR remained independently associated with atherosclerosis. Waist-to-hip ratio showed better discrimination of atherosclerosis than either BMI or WC.
These findings support the use of WC and WHR over BMI as clinical measures of obesity and suggest that an increased burden of atherosclerosis may explain in part the excess cardiovascular risk among persons with obesity.
Obesity and diabetes:
Doctors believe that obesity is probably the most important factor in the development of insulin resistance, but science's understanding of the chain of events is still spotty.
Now, researchers at the Salk Institute for Biological Studies have filled in the gap and identified the missing link between the two. Their findings, to be published in the June 21, 2009 advance online edition of the journal Nature, explain how obesity sets the stage for diabetes.
The Salk team, led by Marc Montminy, Ph.D., a professor in the Clayton Foundation Laboratories for Peptide Biology, discovered how a condition known as ER (endoplasmic reticulum) stress, which is induced by a high fat diet and is overly activated in obese people, triggers aberrant glucose production in the liver, an important step on the path to insulin resistance.
In healthy people, a 'fasting switch' only flips on glucose production when blood glucose levels run low during fasting. 'The existence of a second cellular signalling cascade - like an alternate route from A to B - that can modulate glucose production, presents the potential to identify new classes of drugs that might help to lower blood sugar by disrupting this alternative pathway,' says Montminy.
It had been well established that obesity promotes insulin resistance through the inappropriate inactivation of a process called gluconeogenesis, where the liver creates glucose for fuel and which ordinarily occurs only in times of fasting. Yet, not all obese people become insulin resistant, and insulin resistance occurs in non-obese individuals, leading Montminy and his colleagues to suspect that fasting-induced glucose production was only half the story.
Overweighting leads to dementia
(Healthy nutrition and periodic fasting activate brain) Says Hanz diteleyv Vasman director of the Department of Neurosurgery at University of Munster hospital. Also he confirms that calories restrictions prevent disorders in the brain's functions and reduces the possibility of dementia.
He added that researches proved that healthy and low calories foods which are full of the fatty acid (omega3) increase the efficiency of delivering signals in the brain.
Obesity is a huge risk factor for Alzheimer's disease, scientists say...
'Obesity is a huge risk factor for Alzheimer's disease' says Professor Clive Ballard director of research at the Alzheimer's Society. He added 'People who are obese at 60 are twice as likely to develop dementia by the time they are 75.' And he says 'If we're not careful, it might be 2m or 2.5m people who have dementia in 50 years. This is a real opportunity to reduce the numbers.' And he confirms that the research had shown a regular exercise and a healthy diet could substantially reduce the risk.
The nutrition system and Longevity:
A study had been published in nature magazine, which confirmed that there is a relation between the nutrition system and Longevity (Muslims don't believe in that otherwise we believe that healthy nutrition is a reason behind longevity).
The said study demonstrated the importance of keeping natural weight to get longevity as the protein (IRS2) affects the transmitting of insulin to brain cells.
Prof/ Maurice White at the Howard Hughes Medical Institute says that a simple way to get longevity is the reducing of insulin in blood by practicing sports and following a healthy nutrition system so that the brain will be less exposed to insulin.
Eating much raise prices:
Today, scientists believe that obesity has a bad effect on the global food crisis and the environmental changes as obese people are consuming calories 18% than the natural average.
Researchers say that consuming much food means more fuel consuming to produce more foods, also obese people needs transportation methods to move which needs more fuel and money. Phil Edwards one of those researchers say that the only way to reduce pollution and fuel consumption is to make people walk and move by riding bicycles also by reducing the use of cars.
About the Author:
Nutrition expert & producer of organic Moroccan argan oils
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