Mammogram Screening Program and Its Issues
Written by Doc Team Wednesday, 31 March 2010 01:12
Health problem like breast cancer is one of serious problems that attack many women all over the world. The most discussed news about this cancer regarding the use of mammogram screening programs toward women who really need to be screened. The struggle to fight cancer has been conducted for years with purpose to detect the disease and save more lives.
On the other hand, the mammograms are unfortunately showing slight of imperfection and giving side effects like false alarm and unneeded biopsies. This program also doesn’t give significant improvement for women’s odds of survival. Therefore, the mammogram resulted in big issue especially in United States learning that many officials have promoted the breast cancer screening through mammograms. The debate arouse when influential government panel suggested scaling back screening programs to begin at age 50 instead of 40. However, this advice was then rejected by American Cancer Society and some experts.
Lactate Tolerance, Diet, and Physical Fitness
Written by Doc Team Monday, 29 March 2010 10:15
It has been known since the work of A. V. Hill that lactate is generated during muscular work. This lactate diffuses down a twofold gradient into the blood and is carried to the liver and kidneys, where it is substrate for gluconeogenesis by the Cori cycle.
This arrangement illustrates the supportive role of the visceral organs during work. It also suggests that disposition of lactate may be one limit to work capacity. It can be shown that training allows larger work rates with lower levels of lactate production. Trained men show a quicker reduction to normal of blood lactate levels following the completion of work. In several mammals, including man, the rate of lactate production in the resting state is approximately 0.85 mg/kg/min.
Energy Requirements
Written by Doctor Admin Friday, 19 March 2010 17:39
It is popular for governments and international agencies to prescribe recommended dietary allowances for most nutrients. These may be based on normal intakes of a healthy population or on experimentally determined physiological minima plus some safety factor. In the case of energy, there is a very real dilemma because of the wide range of energy utilization, and all committees so far have only stated average requirements for group of individuals.
Unfortunately, this can only be of limited value, because it is impossible to ascertain whether food is distributed according to the physiological requirements of individuals. For example, it is often important to estimate the number of undernourished individuals in a population to ascertain the seriousness of a problem, and there is no standard for this calculation on the basis of food consumption. This is no ivory tower exercise, because undernutrition is almost certainly the most serious nutritional problem in the world today, and it is important to quantify it on humanitarian grounds and for logistic reasons. It is also politically important.
Acquired Syphilis, More Dangerous Than Gonorrhea
Written by Doc Team Saturday, 13 March 2010 12:00
Syphilis is one of common disease in the United States. Syphilis is much more dangerous than gonorrhea. It result in degradation of mind and body and eventually in death if untreated. In acquired syphilis the spirochetes typically passed along by the sexual act, but any form of intimate body contact suffices if it involves the transfer of liquid infectious material. Kissing and abnormal sex practice are recognized modes of transfer.
Cause
The causative bacterial is Treponema pallidum
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