Showing posts with label GI. Show all posts
Showing posts with label GI. Show all posts

Wednesday, December 28, 2011

IS DIABETES CURABLE?-A MILLION DOLLAR QUESTION!


Calorie restricted diet regime has been known to extend the life span significantly at least in animal experiments and a 1200 kC diet is generally considered beneficial for achieving sound health, freedom from diseases and longevity. Now comes the startling news, though very pleasant, that such a diet with limited calories, if practiced religiously, can even reverse Type II Diabetes within a matter of 16 weeks! If this is true this finding will give hope to millions of people suffering from this debilitating disease, if one call it a disease at all. To day diabetic people are not handicapped from this disease, being able to go on with their life practically normal. There are very effective medicines which are available in the market with minimum side effects. Life span of diabetics is not significantly affected if the blood glucose levels are not allowed to go beyond the safe limit and sugar peaks and surges due to uncontrolled eating are avoided consciously.
 
Dietary control does play a role in controlling ill effects arising out of Diabetes, though reversing the disease has never been an option available to the affected people so far. Diets based on complex carbohydrates, pulses, nuts, coarse and unrefined cereals, dietary fiber, resistant starch etc are known to be effective in controlling diabetes reasonably well. The concepts of GI (Glycemic Index) and GL (Glycemic Load) have helped in designing diets with slow release of glucose from the food ingested thereby preventing peaks in blood glucose level after a meal. Similarly changing the pattern of eating by pacing food ingestion every 3-4 hours in stead of the conventional 3 meal system also can help managing diabetes reasonably well. Diabetes is now considered to be linked to accumulation of fat in the body which some how upsets the insulin activity and over weight and obese people are the major victims of this disorder. In the past there have been special dietary formulations and treatment clinics for those whose BMI is beyond the magical figure of 25-30 which are supposed to help the "patients" loose weight over a period of few weeks. Similarly surgical intervention like bariatric surgery or gastric banding also is resorted to by people with BMI beyond 34. Liposuction is another technique to reduce the body fat and attain healthy weight. However none of these remedial measures is known to reverse the disease.
 
India is considered the diabetes capital of the world though percentage wise the figure may not be as high as that obtained in advanced countries like the UK, USA and others. There are about 300 million diabetic people in the world to day which is slated to increase to 450 million by the year 2030. In India as a percentage of country's population only 3.35% are reported to be affected which works out to about 40 million people! It was reported that in a tiny country like the UK with a population of 63 million, the number of diabetes has crossed 3 million while each year more than 117000 people are diagnosed with this disease. Imagine that country spending almost 9 billion pound sterling per year to treat this category of citizens under the National Health Service program! While Type I diabetes is genetically inherited and the numbers are rather limited, What is alarming is the extent of undiagnosed cases world over which is any body's guess! Type II diabetes is caused by the life style characterized by sedentary habits with no appreciable physical activity and dietary over indulgence with nutritionally unbalanced foods.
 
While diabetes is at least manageable, what is more disconcerting is the on set of other diseases like Heart disease, Stroke, kidney disease, neuropathy, retina detachment and other complications when diabetes is not properly managed through diet and exercise. It is estimated that diabetic people are 5 times more prone to heart attacks and strokes compared to normal individuals. The restricted calorie diet being advocated by scientists in the Netherlands is being hailed as a breakthrough and it is in the interest of the world community to give adequate attention to these scientific findings for adoption world wide. Restricted calorie diet has the twin advantages of preventing as well as reversing the diabetes while significantly extending the life span. How such a "dieting" can be achieved is a million dollar question considering that food has become an addiction in the modern society like tobacco and alcohol and specialized de-addiction centers may have to be set up in hospitals for treating people affected under the medical insurance coverage.

Food industry must step in to help diabetic people to manage the disease with appropriate designer foods with low calorie content but at the same time providing satiety with no feeling of the hunger pangs. One of the most difficult steps in controlling diet is the inability of people to gauge the calorie content of the servings though labels do indicate this information if packed foods are being consumed. Reported development of Mandometer, a device that tells the consumer about the calorie consumed with each mouthful and guides regarding the pace of eating. Slower the food is ingested, better will be the control on food intake. But it may take years before people take devices like Mandometer seriously. It is here where food industry must step in to evolve hundreds of variations of complete meals with serving size limited to provide less than 300-400 kC per serving. 

 

Monday, September 12, 2011

IS POTATO UNHEALTHY?-A NEW CONTROVERSY IN THE OFFING

Agreed that Potato is a vegetable viewed from any angle and invariably it is considered one of the best naturally nutrient-dense vegetables available all over the world. Calorie wise it contains about 70 kC per 100 gm and is considered a better source of potassium than a banana. Though it is rarely known that Potato is a rich source of Vitamin C, the fact is that it can provide almost half the daily need of this nutrient in a single serve. Although notable is its usefulness as a source of Vitamin B6, Copper and Iron. Added to these positive features, it contains no fat, sodium or any other undesirable substances of any consequence. Some protagonists have changed the age old slogan of "apple a day keeps doctor away" replacing apple with potato. How far this claim can be substantiated is a matter of debate. .

If potato is claimed to be so good why is it that weight watchers generally avoid consumption of this vegetable regularly? Probably it is not potato that is doing any harm but calorie rich ingredients like fat and cheese and liberal addition of salt that is bringing the bad name for potato as a unhealthy food. Baked potato preparations doused with lot of butter and salt and deep fried foods like wafers and finger chips containing high fat and salt can create nightmarish situation when consumed in mega quantities regularly. These industrially manufactured products, in fact, contributed largely to the obesity epidemic that is raging in countries like the US.

Of course the golden rule for incorporating potato in the diet is that it should not be fried or baked with lot of fat and if just cooked potato is consumed there is unlikely to be any long term impact on weight gain. Recent move by the US government to restrict the level of potato in the school lunch program has created an avoidable controversy as it conveys a message that potato is not that good for health. Considering the overall nutrition provided by potato such a step can be only a retrograde on.Is it possible that such a decision is influenced by a recent study in the UK which implicates potato consumption as a hindrance to any program that aims at obesity abatement? Possibly yest. On the flip side of this issue, potato economy in the American continent is closely linked to the survival of the farmers as a major portion of production is absorbed by the school lunch programs across that country.

Interestingly China, which accounts for more than 20% of world production of potato, about 315 million tons, does not suffer from obesity epidemic as being seen in the west and probably this is a clear evidence that potato is not an obesogenic food if consumed properly. The world average annual consumption, about 33 kg per capita, is also not considered high working out to just about100 gm per day per person. Similarly the US produces about 20 million tons of potato annually for a population of 300 millions which averages the consumption at less than 70 kg per capita an year or less than 200 gm a day per person which is also not very high. What makes the difference is the way it is consumed using lot of fatty ingredients causing the health problem.

Just because Potato contains some starch, does it mean it cannot be considered a vegetable? If so what about vegetables like green peas, soy bean, fresh corn etc which when fresh are considered vegetables but on drying they become a pulse or an oil seed or a cereal?
Similarly common vegetables like squash, pumpkin, yam and a few others have starch content comparable to that in Potato. More important is the Glycemic Index (GI) of the vegetables that decides whether it will create a Glycemic over Load (GL) leading to weight gain. Potato has a relatively low GI, about 48 while a vegetable like Pumpkin has a GI pf 75. Ultimately moderation is the key when it comes to weight lose or gain and that is the need of the hour indeed!
V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com