18 May 2018 In General Health

The introduction of the term "French Paradox" motivated an extensive and in-depth research into health benefits of moderate wine consumption. The superiority of wine is thought to be attributed to its micro-constituents and consequent effort was made to isolate and identify these bioactive compounds as well as to elucidate the mechanisms of their action. Controlled trials offer more concrete answers to several raised questions than observational studies. Under this perspective, clinical trials have been implemented, mainly in healthy volunteers and rarely in patients, in order to investigate the acute or chronic effect of wine consumption on metabolism and physio-pathological systems, which are mainly associated with cardiovascular diseases. The aim of this review is to update the knowledge about the acute and long term effect of wine consumption on lipid and glucose/insulin metabolism as well as on the inflammatory and haemostatic systems, based on the reported data of controlled clinical trials. In conclusion, the most repeated result of wine consumption is on lipid metabolism, attributed mainly to ethanol, while wine micro-constituents seem to have an important role mainly in haemostatic and inflammatory/endothelial systems.

18 May 2018 In General Health

OBJECTIVES: The primary goal was to examine the relationship between alcohol use and frailty, a variable characterizing late-life decline, in a national, longitudinal survey of older adults living in the United States.

METHODS: The sample drawn from the Health and Retirement Study included 9,499 stroke-free participants over age 65 in 2000. The sample was 59.1% female, and had a mean age of 74.25 years (SD = 6.99). Follow-up data was from 2004, 2008, and 2012. Frailty was defined phenotypically using the Paulson-Lichtenberg Frailty Index (PLFI). Alcohol use was measured via self-report. Control variables included age, race, education, socio-economic status (SES), depressive symptomatology, medical burden score, body mass index (BMI), and partner status. With abstinent participants as the reference group, logistic regressions were conducted to determine prevalent frailty at 2000, and Cox's proportional hazard models were utilized to determine time to incident frailty over a 12-year period.

RESULTS: Results revealed that age, depressive symptomatology, and medical burden score were significant positive correlates of prevalent and incident frailty (p < .05) for both males and females. Logistic regressions revealed that consumption of 1-7 alcoholic drinks per week was associated with reduced prevalent frailty (OR = .49, p < .001) for females. Survival analysis results reveal that compared with nondrinkers, males and females who reportedly consumed 1-7 drinks per week had a decreased probability of incident frailty (HR = .78-081, p < .05).

CONCLUSIONS: Findings suggest that moderate alcohol use confers reduced frailty risk for both older men and women. Future research should examine the mechanism(s) relating alcohol consumption and frailty.

CLINICAL IMPLICATIONS: Findings support extant literature suggesting some healthcare benefits may be associated with moderate drinking.

18 May 2018 In Dementia

Alcohol consumption is common in Western countries and has been increasing in older adults. Latest figures from Great Britain suggest 75% of those over 65 years drink, an increase from 71% 10 years ago. Chronic heavy intake is a well-established cause of brain atrophy and dementia, with a recent long-term prospective study from the USA reporting a doubling of the odds of later severe memory impairment in those with a history of an alcohol use disorder. Drinking of moderate amounts has been reported to be protective for brain health in a number of epidemiological studies, including some claims of possibly reducing dementia risk. Rigorous recent research has questioned this belief, with new evidence of harmful associations in moderate drinkers compared with abstainers. This has raised suspicion that reported protective effects of moderate drinking were due to confounding by socioeconomic class and intelligence. Clinicians should look out for cognitive impairment in heavy drinkers, considering that abstinence may induce a degree of clinical improvement. Discussions with patients regarding moderate drinking should be informed by recent research. Health benefits of moderate drinking at least for cognitive function are questionable, and if they exist are probably limited to one unit of alcohol daily with respect to other body systems.

03 May 2018 In Phenolic compounds
Resveratrol, (3, 5, 4'-trihydroxystilbene) is a non-flavonoid polyphenol stilbene synthesized by plants when damaged by infectious diseases or ionizing radiation. Although present in more than seventy plant species, grapes and wine are the major dietary contributors of resveratrol, responsible for 98% of the daily intake. In 1992, Renaud and De Lorgeril first linked wine polyphenols, including resveratrol, to the potential health benefits ascribed to regular and moderate wine consumption (the so called "French Paradox"). Since then, resveratrol has received increasing scientific interest, leading to research on its biological actions, and to a large number of published papers, which have been collected and discussed in this review. The relatively low amounts of resveratrol measured in wine following moderate consumption, however, may be insufficient to mitigate biological damage, such as that due to oxidative stress. On this basis, the authors also highlight the importance of viticulture and the winemaking process to enhance resveratrol concentrations in wine in order to bolster potential health benefits
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