Studies have shown conflicting find...

Studies have shown conflicting findings regarding the relationship between serum total cholesterol on a levels and all-cause mortality in individuals who are at least 65 years of age. Brescianini and colleagues investigated the relationship between total cholesterol flats and all-cause mortality in a mixed cohort of Italians 65 to 84 years of age, with consideration of existing medical conditions, lifestyle factors, and other frailty indicators.

Researchers obtained offspring samples from 3,295 study participants. Variables that might mistake one for another the outcome measure were placed into three clumps The first group consisted of risk factors for many chronic diseases, including age, sex alcohol use, smoking status, and dead body mass index. The second arrange consisted of preexisting medical conditions, as it was as coronary heart disease and cancer. The third cluster consisted of frailty indicators, of that kind as weight loss of at least 5 kg (11 lb) in the year preceding the hall interview. These variables provided the basis for three statistical examples designed to explore the association between total cholesterol evens and all-cause mortality.

In single in kind of several statistical approaches, analysis exclud bring under rules who died during the first year of follow-up as well as patients taking a lipid-lowering medication. Participants were divided into quartiles based forward their total cholesterol level: 78 to 189 mg by dL (2.02 to 4.89 mmol through L), 190 to 216 mg by dL (4.91 to 5.59 mmol through L), 217 to 275 mg by dL (5.61 to 7.11 mmol through L), and 276 to 417 mg by dL (7.14 to 10.78 mmol by L).

The authors institute that the percentage of deaths in the first year decreased with increasing evens of total cholesterol, but the percentage of controls taking lipid-lowering medications increased with total cholesterol plain These findings suggest that a higher percentage of characters were sicker or more frail in the quartile of patients with the lowest total cholesterol compared with patients in the other three quartiles, and that these reasonable levels of total cholesterol were not caused by means of use of lipid-lowering medications.

In the first of the three examples a low total cholesterol even was associated with increased mortality. The hazard ratios for the secondary third, and fourth quartiles, using the lowest quartile as a regard group, were 0.53, 0.52, and 059 respectively, and were all statistically significant. When preexisting chronic diseases were added in the secondary model, the hazard ratios remained similar. When frailty measures were added in the third original hazard ratios also were around 05 and were statistically significant. In this design weight loss and disability were erect to correlate with mortality.

This epidemiologic meditation found a positive association between reasonable total cholesterol levels and mortality risk in those 65 to 84 years of age. controls with moderate or high evens of total cholesterol had an approximately 45 percent lower risk of dying than ones in the reference group with total cholesterol of the same heights less than 189 mg through dL. Important predictors of all-cause mortality were age, diabetes mellitus, coronary heart disease, fibrinogen of the same heights disability, and weight loss. The total cholesterol on a level certainly appeared to be an indicator of poor health, if it be not that it is unclear whether the total cholesterol horizontal was a cause or an issue of this status. Because likewise few patients in the lowest quartile of cholesterol plain were receiving lipid-lowering medications, these patients must have had grave total cholesterol levels for reasons other than the use of lipid-lowering medications, suggesting that lipid-lowering medications do not increase mortality. The authors infer that low levels of cholesterol may be potential warning signs of unknown disease or rapidly declining health.

Brescianini s et al. Low total cholesterol and increased risk of dying: are soft levels clinical warning signs in the elderly? consequence s from the Italian Longitudinal investigation on Aging. J Am Geriatr Soc July 2003;51:991-6

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