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 ...
Osteoporosis is disease affecting the bones, making them fragile and prone to fracture. Osteoporosis is defined as a systemic skeletal disease characterized by low bone mass and microarchitectural deterioraton of bone mass tissue, with a consequent increase in bone fragility and susceptibility to fracture. Osteoporosis is a condition characterized by mass loss of the normal density of bone. (more…)
If you are over the age of 65, have osteoporosis, or other health issues related to poor bone health, then you should know ho ...
Involuntary weight loss is the result of many chronic progressive diseases, often leading to diminished lean body mass, frailty, su ...
Some researches on relation between exercise and body human health results indicate that in addition to increasing muscle capac ...
When approaching menopause or during post-menopause period, most women suffered from menopausal symptoms irritability like ...
Vertebral compression fractures may occur with major trauma, such as a motorcycle accident, or with something as insignificant ...
In elderly people there is a notable reduction in the capacity to produce new blood cells. Yet, unless there is substantial physiological stress, the number of circulating cells remains fairly constant. Quantitative deficiencies are only apparent when stress produces a demand that exceeds reserve proliferative capacity. Such a demand might occur during an acute infection or after cytotoxic chemotherapy. (more…)
Rheumatoid Arthritis affects approximately 1% of the world’s population. Rheumatoid Arthritis is a chronic, multisystem, autoimmun ...
In many instances, the symptoms listed below are the result of relatively minor disorders as elderly. However, they can also re ...
Dyskeratosis congenita is of special interest to gerontologists because it is caused by a mutation in the gene coding for the ...
The prevalence of sexual dysfunction in women approaches 43%, and age is an important correlate. The underlying etiology of sexual ...
How to choose the best anti aging skin care cream? This is a question that a lot of people ask me. A lot of people, both young ...