MORE THAN WEIGHT LOSS DIETING HELPS BE HEALTHIER A VIDEO ON LOW CALORIE RESTRICTION DIET GOOD NUTRITION SUGGESTS PEOPLE MIGHT LIVE TO OLDER AGE
Most people diet to lose weight. A weight loss diet in an overweight person will lower the weight. People who weigh what they should tend to be healthier and have good blood pressure and fewer medical problems. But some people are on a calorie restriction diet because some studies imply that eating fewer calories makes you healthier and can extend life span. Some medical research suggests that if you get a well balanced nutritional diet and you eat fewer calories the chances are good that you will live longer.
Chronic calorie restriction without nutritional deficiencies increases the length of life. That seems to be the upshot of several reports that have been published over the years. Among studies that suggest chronic calorie restriction was a report that they may have found a gene that explains why calorie restriction may lengthen life.
VIDEO CALORIE RESTRICTION LIVING TO OLDER AGEClick the Arrow to Start the Video
Scientists can "knock out" or shut down the function of various genes in a study animal to see which are important. They are able to selectively turn off a gene in an animal and then see what happens. It is somewhat analogous to going into the electrical equipment room of a large building and removing a part from some machine you see. If the air conditioner stops working you know that part had some relation to the air conditioning. They often use a worm called C. elegans because it is so simple and well understood yet by studying it they can probably learn lessons applicable to higher organisms.
A research group found a gene that codes for a protein in C. elegans that is related to longevity and that calorie restriction may be causing increased production of the pha-4 protein and so leading to longer life (at least in C. elegans).
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