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Low-Cal Diet Extends Life... As Long as You Don't Eat
There has been a lot of research recently showing that a restricted calorie diet can extend the lifespans of various creatures. Sadly, it seems that as soon as they start eating again, the benefits are lost.
studies have shown that research causes cancer in rats.
Here's the google link directly to the story.
- b
... it just seems that way
Ahh well the last one isn't a problem for slashdotters...
On my "lifesyle" change I had lost 60 pounds. I wobbled a bit and gained 5 back, but I'l losing 1-2 pounds a week again.
There is one things that keeps getting hammered into my head.
We don't need all the food we eat to survive or even be full. Once your stomach learns what it needs, it won't keep asking for more more more.
People with the "supersize" this and the "extra large" that are slowly killing themselves each time they order more than they need.
But let's face it. I'd rather die in my 60's then to live 20 years longer in a nursing home.
Just remember slashdotters, you can have ONE slice of pizza for dinner and still be ok for your daily caloric intake.
Yo Grark
Canadian Bred with American Buttering
Canadian Bred with American Buttering
Okay... we've uncovered yet another truth in nature... organisms are designed to withstand famine.
Although the human intellect has improved over the millenia, the genetic script for our bodies has been nearly unchanged since the last ice ages. We only see organisms today that can resist famine because evolution has weeded out those strains that couldn't survive. If the creature can't find food or water, it's in the best interest to "pause" some life functions so you can survive until nourishment can be found.
Our bodies are evolved to be fat-storage machines; we have to, because nature can never guarantee the next meal. Our noses, though not as good as some other creatures, are still very receptive to spoiled food. Salt tastes good because our body needs it for cellular processes. Sugar tastes good because it's high energy "food" rare in nature.
But we've broken the cycle. Our insulin proceses the sugars, but never before has so much sugar been available, so now we see diabetes where our insulin receptors are over-exposed and develop a tolerance. We still have fight-or-flight mechanisms, but most of us live such a mundane existance, we release stress chemicals over the slightest event. Then we try these starvation diets, and our bodies don't burn the fat, because it thinks there's real hard times ahead, not realizing we have more food than we can eat.
It's a battle of intellect over evolved chemistry... but slowly we understand what is really going on behind the scenes, and with knowledge comes the power to correct it.
It used to be 'common knowledge' that fully differentiated cells of a given tissue type would each live for a specific length of time and then die.
I argued that this was not so. I suggested that fully differentiated cells of a given tissue type would divide a specific number of times and then stop dividing (Hayflick Limit). I hypothesized the existence of a counter in each cell that kept track of how many more times that cell could divide. Today, those counters are called Tellomeres.
The reason you live longer on a low calorie diet is because your individual cells don't have the fuel to go through their life cycles as quickly. Give them the fuel and they speed up again.
So the idea of waiting until 48 hours before your natural dead would not extend your life by much at all. Sorry.
Tellomeres are like a chain of knots at one end of the DNA. Each time the DNA divides, there's one less knot on the chain. If the cell does not become cancerous, when there are no more knots, the cell ceases to divide. The real answer to life extension will be when we learn how to add knots back onto the Tellomeres.
I expect this problem to be solved within the next 15 years. At that point, it will become possible to slowly roll back the age of the body as, for example, 46th generation smooth muscle cells divide and become 17th generation smooth muscle cells. Over a period of several years your body would effectively become younger.