After appropriate digestion of nutrients, the function of the gastrointestinal tract is to absorb these nutrients so they may be used for a variety of cellular processes.
Absorption occurs across the cells lining the small intestine and proceeds via one of several mechanisms. The first is passive absorption, in which material moves along an electrochemical gradient. The second is facilitated transport, in which absorption of one substance is coupled to the transfer of another substance. (more…)
The regulation of fluid balance is crucial to survival. Approximately 9 L of fluid enters the gastrointestinal tract per day. Of th ...
The motility of the gastrointestinal tract is complex, and normal motility is critical to proper secretion and digestion. In order ...
Some medications exist for weight loss. These medications are moderately effective, although they often have side effects that ...
The accumulative waste theory of aging, also known as the waste accumulation or garbage accumulation theory of aging, proposes ...
Enzymatic Antioxidants Certain enzymes and many small water-soluble and lipid-soluble molecules can intercept and destroy free ra ...
The regulation of fluid balance is crucial to survival. Approximately 9 L of fluid enters the gastrointestinal tract per day. Of that amount, about 2 L is ingested by mouth. The remaining 7 L consists of fluids secreted by the various gastrointestinal organs. Ninety eight percent of the total amount of fluid that enters the gastrointestinal tract is reabsorbed in the small intestine and the colon. (more…)
After appropriate digestion of nutrients, the function of the gastrointestinal tract is to absorb these nutrients so they may be us ...
The motility of the gastrointestinal tract is complex, and normal motility is critical to proper secretion and digestion. In order ...
The accumulative waste theory of aging, also known as the waste accumulation or garbage accumulation theory of aging, proposes ...
The reduced physiological reserve after the one quoted above includes anatomical changes associated with aging, functional resp ...
Doctors frequently have the patients need their dietary advice. As a doctor, I ‘ve talked to many patients over the huge amount ...
The motility of the gastrointestinal tract is complex, and normal motility is critical to proper secretion and digestion. In order for gastrointestinal motility to be effective, it must be coordinated with other intestinal functions such as secretion and absorption, and it must be regulated and integrated in a precise fashion. (more…)
The regulation of fluid balance is crucial to survival. Approximately 9 L of fluid enters the gastrointestinal tract per day. Of th ...
After appropriate digestion of nutrients, the function of the gastrointestinal tract is to absorb these nutrients so they may be us ...
The reduced physiological reserve after the one quoted above includes anatomical changes associated with aging, functional resp ...
A number of global changes occur in the human nervous system with age. These changes affect the Autonomic Nervous System as well as ...
Positron Emission Tomography (PET) has proven to be a sensitive and specific tool for identifying functional brain changes in patie ...
There is truth in the age old advice to do your traveling while you still can. Don’t wait until those legs of yours become so crusty that you can no longer walk a mile even if you have a chauffeured car waiting for you at every turn, the walking is the least of your problems when traveling. There will be the issues of backaches, sore muscles, indigestion and frequent urinating, which can be inconvenient for some of the members of the family. (more…)
There are two basic considerations on how to prevent accidents and injuries in elderly. First of all, we should make our surrou ...
As we enter that zone of parenting our parents, the value of our knowledge and understanding the purpose of re-parenting become ...
Wheelchairs are a necessary item for many people. They provide mobility to people who might otherwise be unable to travel. For ...
Spinal stenosis is a condition where there is narrowing of the spinal cord that causes pinched nerves, chronic pain in the butt ...
The accumulative waste theory of aging, also known as the waste accumulation or garbage accumulation theory of aging, proposes that molecules damaged by oxidation and their by products (e.g., aged collagen, damaged enzymes), and damaged mitochondria (organelles responsible for cellular energy production) accumulate in postmitotic (non dividing cells) causing dysfunction, toxicity, aging, and cell death (see Error Catastrophe Theory of Aging).
There are several mechanisms by which garbage accumulation affects cells. (more…)
Aging theories cover the physiological, genetic, biochemical properties of a typical organism, and the way these properties cha ...
A number of global changes occur in the human nervous system with age. These changes affect the Autonomic Nervous System as well as ...
Reactive radicals of nitrogen (nitric oxide and derivatives such as peroxynitrite) and of oxygen (superoxide anion, hydrogen peroxi ...
The largest single risk factor for developing cancer is age. The incidence of cancer increases exponentially with age, although ...
Aging theories cover the biochemical, genetic, and physiological properties of a typical organism, and the way these propertie ...
I’ve been noticing my body’s growing inclination to slow down, how it’s starting to get tougher to get off the couch, how it takes longer to heal, how I groan a little more when getting out of bed in the morning. I see a trend for the next 60 years.
And, I’ve been playing with it and experimenting with how to avoid all that. You too can avoid body aches and pains in elderly by following these 7 Easy Steps. (more…)
Back pain is a real pain in your back! You want relief now but would like to try some natural home remedies before resorting to pre ...
Prevention is the best cure for back pain. If I had practice proper lifting techniques and /or the box I lifted had been proper ...
With heart disease risk being the number one cause of death among older Americans, you should pay particular attention to known ...
Have you ever wanted to look younger than your current ages? Sure you have. Many of us still looking for the Fountain of Youth; ...
Finding the best anti-aging skin creams, contrary to what most people think, is not that hard. Once you understand your skin an ...