Tag Archives: Catabolism

DIET STUDIES: HIGH-SUGAR DIETS SUPPRESS DOPAMINE, LEADING TO OVEREATING

From Phys.org/Univ. of Michigan (June 9, 2020):

High-Sugar Diet Dampens Release of Dopamine Causing Overeating - Univ of Michigan - Credit Christina May and Monica Dus

“On a high-sugar diet, we find that the fruit flies’ dopaminergic neurons are less active, because the high sugar intake decreases the intensity of the sweetness signal that comes from the mouth,” Dus said. “Animals use this feedback from dopamine to make predictions about how rewarding or filling a food will be. In the high-sugar diet flies, this process is broken—they get less dopamine neuron activation and so end up eating more than they need, which over time makes them gain weight.”

It is well known that consuming food and drink high in sugar is not great for us, but scientists are continuing to unravel the intricacies of how the sweet stuff drives negative health outcomes. The latest finding comes from researchers at the University of Michigan, who through studies in fruit flies have found that excess amounts of sugar can shut down crucial neural circuits linked to regulating satiety, possibly leading to overeating in humans.

Read entire article

COMMENTARY

SUGAR IS A POISON.

A novel illustration of sugars’ lethality was the Georgia sugar refinery explosion in 2008, which killed 14 people. Finely ground sugar is flammable.

Sugar appeared early in civilization, but it was expensive, sparing all but the wealthy of its’ depredations, mainly tooth decay.  Only with the post WWII expansion of wealth was it consumed excessively to produce the diseases of overeating. The developed world now consumes over 70 pounds of sugar per person, amounting to over 250 CALORIES PER DAY!

This  article shows how SUGAR acts like a DRUG In its INTERFERENCE with the DOPAMINERGIC Reward system. The neurons send less signal, so you need MORE SUGAR to satisfy.

The metabolic systems through which overeating and sugar causes the OBESITY, DIABETES, VASCULAR DISEASE and Early DEMENTIA are convoluted.The best detailed explication is in the NEJM article in intermittent fasting, a healthful practice that is the polar opposite of overeating.

Two very important metabolic mechanisms are discussed, the mTOR system and the Sirtuin system. These systems are important for NUTRIENT SENSING and repair, and conserved in all animals. They worked just fine in our early ancestors.

It seems that primitive man was not blessed (or is it cursed) with easy overabundance or food, and actually spent hours or days in Hunger. When times were good, his body put on muscle, and stored fat against the hard times to come. This is called ANABOLISM. When times were bad, his body went into repair mode, and used the fat for energy. This is called CATABOLISM.

Anabolism has evolved expressly for Young Animals, where extra food is welcome for Growth. After the growing and Reproductive years, our Bodies’ evolutionary “warrant” expires, since the genes it carries have already been spread. Our older bodies are left to deal with machinery more suited to an earlier vibrancy. Our metabolism didn’t evolve to deal with the calories we shove into our aging Bodies. Many mechanisms beneficial in the young prove harmful later on. This divergence has been called “ antagonistic pleiotropy”.

Whatever the explanation, the observation remains: if adults eat more than they can use, they gain weight. With insufficient exercise, this weight is fat. With excessive fat, the joints, blood vessels, liver, heart and brain suffer,  and lifespan is shortened.

RETHINK YOUR LIFESTYLE AS SOON AS POSSIBLE. AVOIDING SUGAR, and ALL THINGS CONTAINING SUGAR is as good a place as any to start. You will be rewarded by being able to fully taste and enjoy the natural sweetness of many REAL FOODS, and afforded a longer life to partake in this pleasure.

—Dr. C.

DR. C’S MEDICINE CABINET: “OVERVIEW OF METABOLISM”

“Life is nothing but an electron looking for a place to rest”.

Albert Szent-Gyorgy

Overview of Metabolism – Seeing an Essence of Nanosystems in the Hum of a Vibrant City; the Skyscraper as Catalyst, and Thought as Electron

What did it take to bring the world to its’ knees? SARS-CoV2? We will never know, because we instituted DISTANCING to control the virus because the projected number of deaths were unacceptable.

The distancing and isolation did hold the number of deaths, still large, below projection. However, it DEVASTATED our Economy.

OUR WORLD is a  massive, cooperative, interdependent system, with hubs, factories, supply chains and a myriad of products. It is a COMPLEX SYSTEM.

I would like to use the world as an analogy, and compare it to another Complex System, the HUMAN BODY.

Our bodies are essentially a large pile of chemicals (mostly proteins) in a sack, our skin. These chemicals are constantly interacting with each other. If they grow to larger, more complex chemicals in a process we call anabolism, we take in more chemicals and energy by eating, and get bigger. If our chemicals get less numerous and complex in a process we call catabolism, we lose weight and get smaller.

Some of the proteins in our bodies are ENZYMES, and bring other proteins CLOSER TOGETHER, so that they can LINK TOGETHER  become more complex and PRODUCE things. Enzymes are a sine qua non of life. Without enzymes, life would slow so much as to be impossible. 

Let’s go back to our Society, Before Covid. 

Vast numbers of people are cooperating in close proximity, working together with machines, often supplied by other people far away, making things. This process takes place most efficiently in CITIES, where people are in closest proximity, doing things together.

Enter Covid. This interdependent process stops. What things that are produced are made to fight Covid. It is just like one of our cells infected by Covid: we have been HIJACKED  by the virus!

Lets’ GO BACK TO OUR CELLS. Our METABOLISM is like our teeming, cooperative CITIES, with SUPPLY CHAINS, factories and products. Our PROTEINS NEED PROXIMITY to function.

Some Proteins are at a critical HUB, and comprise a RATE-LIMITING step in the production line.

Many Vitamins and nutrients are COENZYMES, and act to ACCELERATE critical supply lines.

If the Hubs are OUT OF BALANCE and OVERACTIVE, many MEDICATIONS act to BLOCK THE ACTION of an enzyme to bring the system closer to balance.

Thus coordination, cooperation and careful monitoring to PREVENT A PROBLEM is superior to letting it break down and correcting the imbalance.

I hope that this Overview will be helpful. I will go through my MEDICINE CABINET to discuss a few of the 20,000 or so Medications approved by the FDA. I will also VIEW THE TEST RESULTS from my LABORATORY TESTS. NORMAL results show a SYSTEM IN BALANCE. Abnormal results show inefficiencies in the metabolism (supply chains, hubs), which need correction to restore balance.   

— Dr. C