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The overall improvement in the health of Americans over the 20th century is best exemplified by dramatic changes in 2 trends: 1) the age-adjusted death rate declined by about 74%, while 2) life expectancy increased 56%. Leading causes of death shifted from infectious to chronic diseases. In 1900, infectious respiratory diseases accounted for nearly a quarter of all deaths. In 1998, the 10 leading causes of death in the United States were, respectively, heart disease and cancer followed by stroke, chronic obstructive pulmonary disease, accidents (unintentional injuries), pneumonia and influenza, diabetes, suicide, kidney diseases, and chronic liver disease and cirrhosis. Together these leading causes accounted for 84% of all deaths. The size and composition of the American population is fundamentally affected by the fertility rate and the number of births. From the beginning of the century there was a steady decline in the fertility rate to a low point in 1936. The postwar baby boom peaked in 1957, when 123 of every 1000 women aged 15 to 44 years gave birth. Thereafter, fertility rates began a steady decline. Trends in the number of births parallel the trends in the fertility rate. Beginning in 1936 and continuing to 1956, there was precipitous decline in maternal mortality from 582 deaths per 100 000 live births in 1935 to 40 in 1956. Since 1950 the maternal mortality ratio dropped by 90% to 7.1 in 1998. The infant mortality rate has shown an exponential decline during the 20th century. In 1915, approximately 100 white infants per 1000 live births died in the first year of life; the rate for black infants was almost twice as high. In 1998, the infant mortality rate was 7.2 overall, 6.0 for white infants, and 14.3 for black infants. For children older than 1 year of age, the overall decline in mortality during the 20th century has been spectacular. In 1900, >3 in 100 children died between their first and 20th birthday; today, <2 in 1000 die. At the beginning of the 20th century, the leading causes of child mortality were infectious diseases, including diarrheal diseases, diphtheria, measles, pneumonia and influenza, scarlet fever, tuberculosis, typhoid and paratyphoid fevers, and whooping cough. Between 1900 and 1998, the percentage of child deaths attributable to infectious diseases declined from 61.6% to 2%. Accidents accounted for 6.3% of child deaths in 1900, but 43.9% in 1998. Between 1900 and 1998, the death rate from accidents, now usually called unintentional injuries, declined two-thirds, from 47. 5 to 15.9 deaths per 100 000. The child dependency ratio far exceeded the elderly dependency ratio during most of the 20th century, particularly during the first 70 years. The elderly ratio has gained incrementally since then and the large increase expected beginning in 2010 indicates that the difference in the 2 ratios will become considerably less by 2030. The challenge for the 21st century is how to balance the needs of children with the growing demands for a large aging population of elderly persons.
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PMID:Annual summary of vital statistics: trends in the health of Americans during the 20th century. 1109 82

Nonalcoholic steatohepatitis, along with other forms of nonalcoholic fatty liver disease, is a chronic liver disease that is attracting increasing significance. It is a clinicopathologic syndrome that was originally described in obese, diabetic females who denied alcohol use but in whom the hepatic histology was consistent with alcoholic hepatitis. This typical patient profile has been expanded and is now recognized to occur even in normal weight males without overt abnormalities in carbohydrate metabolism. Although originally believed to be a benign clinical entity, nonalcoholic steatohepatitis is now recognized as a cause of progressive fibrotic liver disease with adverse clinical sequelae. It is important to emphasize that nonalcoholic steatohepatitis is best considered one type of a larger spectrum of nonalcoholic fatty liver disease that is a consequence of insulin resistance and ranges from fat alone to fat plus inflammation, fat plus ballooning degeneration, and nonalcoholic steatohepatitis, the latter being the most serious form. As with any disease, the clinical importance of nonalcoholic steatohepatitis is related to its prevalence and natural history. Recent studies using different methodologies indicate that in the general population the prevalence of fatty liver and nonalcoholic steatohepatitis is approximately 20% and 3%, respectively. These prevalence rates are increased in certain subpopulations such as obesity and type II diabetes. Of greater concern is the recognition that cirrhosis and liver-related deaths occur in approximately 20% and 8% of these patients, respectively, over a 10-year period. Risk factors for these adverse clinical symptoms include patients older than the age of 45, the presence of diabetes or obesity, an aspartate aminotransferase/alanine aminotransferase ratio > 1 and hepatic histology. However, a number of important unresolved issues must be clarified before the true natural history of this disease can be fully understood.
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PMID:Clinical features and natural history of nonalcoholic steatosis syndromes. 1129 93

The liver plays an important role in the pathogenesis of NIDDM. More importantly to the clinician is the myriad of situations in which the care of the patient with diabetes is affected by or causes an effect to the liver. Patients with underlying diabetes can present with abnormal liver chemistries, which can represent findings as benign as hepatic steatosis or as severe as cirrhosis of the liver. The medications used to treat diabetes can be potent hepatotoxins. Several primary liver diseases are associated with increased risk of the development of diabetes. Epidemiologically, there seems to be a correlation between diabetes mellitus, the most common endocrinologic disease, and hepatitis C, the leading cause of chronic liver disease in the United States. In the management of end-stage liver disease, both cirrhosis and orthotopic liver transplantation promote glucose intolerance and diabetes in a number of patients through various mechanisms including insulin resistance and impaired insulin secretion. These relationships highlight both the importance of the liver as an endocrine organ and the multisystem aspects of the patient with diabetes mellitus.
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PMID:Liver disease and diabetes mellitus. 1132 35

Nonalcoholic steatohepatitis (NASH) is a condition characterized by hepatomegaly, elevated serum aminotransferase levels, and a histologic picture similar to alcoholic hepatitis in the absence of alcohol abuse. Most patients with NASH are obese women, and many have diabetes mellitus, hypercholesterolemia, or hypertriglyceridemia. NASH has also been associated with a number of metabolic conditions, surgical procedures, and drug treatments. Most patients are asymptomatic. The most common sign of NASH is hepatomegaly. Stigmata of chronic liver disease are rare. Laboratory abnormalities include a 2-4-fold elevation of serum aminotransferase levels; other liver function test results are usually normal. Histologically, there is moderate to severe macrovesicular steatosis and lobular hepatitis with necrosis or ballooning degeneration and/or fibrosis. The pathogenesis of NASH is poorly understood, but lipid peroxidation and oxidative stress are the leading culprits. The natural history of NASH is unknown, but NASH seems to be a stable disease in most patients. Treatment of NASH is unproven, but weight reduction is recommended in obese patients. Small pilot studies of several drugs have shown promise, but large randomized clinical trials are awaited. Orthotopic liver transplantation is the treatment of choice for end-stage liver disease secondary to NASH.
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PMID:Nonalcoholic steatohepatitis. 1152 55

Listeria monocytogenes, an uncommon foodborne pathogen, is increasingly recognized as a cause of life-threatening disease. A marked increase in reported cases of listeriosis during 1998 motivated a retrospective nationwide survey of the infection in Israel. From 1995 to 1999, 161 cases were identified; 70 (43%) were perinatal infections, with a fetal mortality rate of 45%. Most (74%) of the 91 nonperinatal infections involved immunocompromised patients with malignancies, chronic liver disease, chronic renal failure, or diabetes mellitus. The common clinical syndromes in these patients were primary bacteremia (47%) and meningitis (28%). The crude case-fatality rate in this group was 38%, with a higher death rate in immunocompromised patients.
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PMID:Listeria monocytogenes infection in Israel and review of cases worldwide. 1192 29

Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease that affects a high proportion of the world's population. Insulin resistance and oxidative stress play a critical role in the pathogenesis of NAFLD. Clinical, biochemical and imaging studies are of value in the diagnostic evaluation of patients with NAFLD, but liver biopsy remains the most sensitive and specific means of providing important diagnostic and prognostic information. Simple steatosis has the best prognosis within the spectrum of NAFLD, but NAFLD has the potential to progress to steatohepatitis, fibrosis and even cirrhosis. No effective medical therapy is currently available for all patients with NAFLD. In patients with diabetes mellitus and hyperlipidemia, appropriate metabolic control is always recommended, but rarely effective in resolving the liver disease. Weight reduction, when achieved and sustained, may improve the liver disease, although the results with weight loss have been inconsistent. Pharmacological therapy aimed at the underlying liver disease holds promise. Several medications with different mechanisms of action and potential benefit are currently being evaluated in clinical trials. Liver transplantation is a life-extending therapeutic alternative for patients with end-stage NAFLD, but NAFLD may recur after liver transplantation.
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PMID:Non-alcoholic fatty liver disease. 1200 Jun 5

Women over 40 years of age comprise only between 9% and 20% of the population of Latin America and the Caribbean, but their numbers are growing. Life expectancy for women in the region is expected to exceed 71 years by the year 2000. In Costa Rica, women are responsible for more than 36% of urban households headed by persons over 60, according to a report. Many women in developing countries continue to bear children in their forties. In the 1980s the major causes of death for women over 45 in Latin America were heart disease, cerebrovascular diseases, cancer, diabetes mellitus, accidents and pneumonia/influenza. Cancer is the leading cause of death followed by heart disease. In urbanized countries chronic liver disease is a prime cause of death, often as the result of alcohol abuse. Infectious diseases such as influenza, pneumonia, and intestinal infections are more lethal in countries with more rural populations. Beginning at about age 35, cancer ranks first or second as a cause of death. Breast and uterine cervix cancers are the most deadly for both Latin American and Caribbean women. In the less developed and rural countries cancer of the cervix predominates. In more developed countries breast cancer is more prevalent. Lower cervical cancer rates in more developed countries occur because of greater use of PAP smears. Among women aged 65 years and older, heart disease and strokes are the main causes of death in both Latin America and the Caribbean. Diabetes and other chronic degenerative diseases are increasing throughout Latin America and the Caribbean. Diabetes is among the leading causes of death both in midlife and older women in 13 of the 18 Latin American countries and 6 of the 10 Caribbean nations. Among Latin American and Caribbean women at midlife and older chronic undernutrition is common. An estimated 37% of adult women in the Caribbean are anemic, 26% in Central America, 14% in tropical South America, and 12% in temperate South America. Osteoporosis with the potential for fractures is common among older women in the region. Community-based and home health care programs may be the solution for the health care needs of midlife and older women.
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PMID:The invisible force. Midlife and older women. 1215 75

Hereditary hemochromatosis is an inherited autosomal recessive disease, associated to a mutation in the recently described HFE gene, which is located on the short arm of chromosome 6. The product of this gene combines with the beta-2-microglobulin and the ferritin receptor, and regulates the iron absorption in the small intestine crypt cells. It is possible that the mutation may cause the increased iron uptake by the intestinal cells. The disease is very much common in men after the forties, and its expression is influenced by concomitant alcoholism, iron rich diet, oral and parenteral iron administration, menstrual blood loss or abnormal hemorrhages, blood donations, pregnancy, lactation, and iron malabsorption clinical conditions, like celiac disease. Many patients are asymptomatic, and the diagnosis may be suspected by hepatomegaly of unknown cause, abnormal iron metabolism tests, increased serum aminotransferase levels, diabetes mellitus, and anonymous arthropathy. Less commonly hereditary hemochromatosis presented by symptoms and signs of chronic liver disease, or by the classic triad described by Trousseau skin pigmentation, hepatomegaly and diabetes mellitus. The diagnosis is confirmed by the increased serum ferritin levels and transferrin saturation, and the stainable iron in hepatocytes, measured by scale devised by Scheuer et al, or the measurement of the hepatic iron. The C282Y mutation was found in 64 to 100% of patients; eventually, subjects with hepatic iron overload identical to hereditary hemochromatosis has no mutation, and homozygous for the C282Y mutation do not express iron overload. Iron is best and quickly removed by weekly or twice-weekly phlebotomy of 500 ml, containing approximately 250 mg iron. One to 3 years of weekly phlebotomy may be required to reduce stores to normal. As a guide to long-term maintenance therapy, is recommended phlebotomy every 3 months and the serum ferritin level should be maintained by less than 50 ng/ml.
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PMID:[Hereditary hemochromatosis]. 1217 Feb 86

Vibrio vulnificus is a gram-negative rod that can cause septicaemia and skin lesions, usually in patients with underlying illnesses such as chronic liver disease or diabetes mellitus. Infections caused by this bacterium are unusual in Spain. A case of skin infection due to Vibrio vulnificus is reported in a patient whose abraded skin on his left leg came into contact with seawater. The patient died suddenly, probably due to septicaemia or bacteraemia caused by this organism. Vibrio vulnificus infection must be considered in the differential diagnosis of septicaemia, skin lesions and wound infections, particularly when a patient reports a history of contact with seawater.
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PMID:Wound Infection due to Vibrio vulnificus in Spain. 1217 45

"The death rates at ages over 40 in Japan were analyzed using Japanese Vital Statistics for 1947-1988. Secular changes in the death rate and the age-specific death rate were analyzed according to sex and major causes of death. Twelve major causes of death were as follows: (1) malignant neoplasms, (2) heart disease, (3) cerebrovascular disease, (4) pneumonia and bronchitis, (5) accidents and adverse effects, (6) senility without mention of psychosis, (7) suicide, (8) chronic liver disease and cirrhosis, (9) nephritis, nephrotic syndrome and nephrosis, (10) hypertensive disease, (11) diabetes mellitus and (12) mental disorders.... The mean age at death increased 50 years [over] the last 38 years." (SUMMARY IN ENG)
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PMID:[[Mortality in the elderly population aged over 40 in Japan, 1947-1988]]. 1228 12


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