Cancer occurrence rates in a period of time for a given population is expressed in various ways. The incidence rate is a direct measure of the probability of developing cancer and is usually expressed per year. Incidence rates may be crude (all ages) or age specific. Since cancer is very age dependent, age specific rates are usually more informative. Cancer in elderly is more prevalent compare to cancer in younger age. When comparing population groups with different age distributions (such as the United States vs. China), the incidence rate should be age adjusted by multiplying each age-specific rate by the percent of individuals in a population with the same ages and then summing these to produce a single value. For etiological studies, incidence rates tend to be more informative than mortality rates, as they identify all diagnosed cases. (more…)
Cancer is the second leading cause of mortality after heart disease and the leading cause of death among women ages 40 to 79 and me ...
Animal studies support a cancer-promoting role for fat, and in humans, epidemiological data strongly suggest that dietary fat i ...
Obsessive-compulsive disorder (OCD) is a common neuropsychiatric condition that is frequently unrecognized and untreated, resul ...
The largest single risk factor for developing cancer is age. The incidence of cancer increases exponentially with age, although ...
Potential benefits of T treatment in older men must be weighed against risks of adverse effects. In young hypogonadal men, physiolo ...
The largest single risk factor for developing cancer is age. The incidence of cancer increases exponentially with age, although death from cancer (cancer mortality) may decline at very old age. The inevitable age-dependent rise in cancer incidence is a feature of multicellular organisms that contain a substantial fraction of mitotic cells. Organisms such as flies and worms are composed primarily of post-mitotic cells, and hence do not develop cancer. (more…)
The sequencing of the human genome was begun in 1990 and completed in 2003. The International Human Genome Sequencing Consortiu ...
The classical view of carcinogenesis was that it was a two-‘hit’ process – initiation (genetic) and promotion (epigenetic). How ...
In every population of cells there are three types of cell. The first group consists of cycling cells, which continuously proli ...
Although many possible explanations for the mechanism that underlies the Hayflick limit have been proposed, it is still not cle ...
Oncogenes are damaged versions of normal genes (‘proto-oncogenes’) that control cell growth and differentiation. It is importan ...
Lifestyle and behavioral factors are responsible for a multiple chronic aging diseases and associated to morbidity and mortality tendencies. In the U.S., nearly 50 million adults are smoking. Annually, smoking alone is responsibility for about 400,000 deaths.
As you probably know, anyone who ever try to give up smoking is facing some difficulties most of the time. (more…)
Chronic diseases are not generally prevented by vaccines or cured by medication, nor do they just disappear. To a large degree, ...
Abuse of drugs and alcohol is not uncommon among the elderly. The high rate of prescribed medication use, increased physiologic ...
As we grow older, our dietary habits seem to become more deeply entrenched. As a consequence, deficiencies in the diet are perp ...
There are differences on what exactly contribute to quality of life on a personal level from person to person. Although many ol ...
Cancer occurrence rates in a period of time for a given population is expressed in various ways. The incidence rate is a direct mea ...