ScienceDaily: Health & Medicine News

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• Food may be addictive: Food craving may be 'hard-wired' in the brain
• Psychotic patients distinguished from controls while watching movie Alice in Wonderland
• Knee and Hip Replacements May Be Bad for the Heart
• A single cocaine dose lowers perceptions of sadness and anger
• How can we prevent suicide? Major study shows risk factors associated with depression
• Treating left atrial appendage could dampen long standing persistent atrial fibrillation
• Rapid, more sensitive test speeds up chest pain triage
• Surprise cardiac finding predicts future risk
• Leadless pacemaker study assesses safety and efficacy
• Cold weather linked to increased stroke risk in atrial fibrillation patients
• Recruitment of leukocytes is a hallmark of stent thrombosis
• Cold weather associated with higher risk of severe heart attack
• Refractory cardiac arrest patients brought to hospital with ongoing CPR can recover
• Pollution and weather influence outcomes after heart attack
• Prolonged television watchers have higher risk of fatal pulmonary embolism
• Coffee linked with increased cardiovascular risk in young adults with mild hypertension
• Midday naps associated with reduced blood pressure and fewer medications
• Depression and extremes of blood pressure predict highest rates of harmful vascular events
• New 'Tissue Velcro' could help repair damaged hearts
• The importance of hydration
• Imitating viruses to deliver drugs to cells

Food may be addictive: Food craving may be 'hard-wired' in the brain Posted: 30 Aug 2015 09:11 PM PDT An international group of researchers have found that food craving activates different brain networks between obese and normal weight patients. This indicates that the tendency to want food may be 'hard-wired' into the brain of overweight patients, becoming a functional brain biomarker.

Psychotic patients distinguished from controls while watching movie Alice in Wonderland Posted: 30 Aug 2015 09:11 PM PDT Researchers using fMRI (functional Magnetic Resonance Imaging) have found that even first-episode psychotic patients process information differently from a control group. To ensure both groups experienced the same brain stimuli, the measurements were taken while the subjects watched a movie, Tim Burton's Alice in Wonderland.

Knee and Hip Replacements May Be Bad for the Heart Posted: 30 Aug 2015 09:11 PM PDT Contrary to recent reports, researchers found that osteoarthritis patients who had total knee or hip joint replacement surgery, known as arthroplasty, were at increased risk of heart attack (myocardial infarction) in the early post-operative period. However, findings indicate that long-term risk of heart attack did not persist, while the risk for venous thromboembolism -- blood clot in veins and lungs -- remained years after the procedure.

A single cocaine dose lowers perceptions of sadness and anger Posted: 30 Aug 2015 12:26 PM PDT A single dose of cocaine can interfere with the ability to recognize negative emotions such as anger and sadness, according to new research.

How can we prevent suicide? Major study shows risk factors associated with depression Posted: 30 Aug 2015 12:26 PM PDT A major multi-national study of suicides has identified the behavior patterns which precede many suicide attempts. This may lead to changes in clinical practice in the care of patients affected with depression, as it shows the clinical factors which confer major risk of suicide attempts.

Treating left atrial appendage could dampen long standing persistent atrial fibrillation Posted: 30 Aug 2015 12:03 PM PDT In patients with long-standing persistent atrial fibrillation (AF) despite standard treatment, additional electrical isolation of an area called the left atrial appendage (LAA) can improve freedom from AF without increasing complications, results of the BELIEF study show.

Rapid, more sensitive test speeds up chest pain triage Posted: 30 Aug 2015 12:03 PM PDT Patients arriving at the emergency department with chest pain suggestive of acute myocardial infarction (AMI) can be triaged more quickly and more safely using a new rapid assay with refined cut-offs, research suggests.

Surprise cardiac finding predicts future risk Posted: 30 Aug 2015 12:02 PM PDT In patients with chronic ischemic heart disease, a small left ventricle with thick walls, is the strongest predictor of morphologic remodelling, which is generally considered a first step towards heart failure, according to unexpected findings.

Leadless pacemaker study assesses safety and efficacy Posted: 30 Aug 2015 12:02 PM PDT A leadless cardiac pacemaker showed "good safety and reliable function" during the initial six months of follow-up in the LEADLESS II study, investigators reported.

Cold weather linked to increased stroke risk in atrial fibrillation patients Posted: 30 Aug 2015 12:02 PM PDT Cold weather is associated with increased risk of ischaemic stroke in patients with atrial fibrillation, according to new research. The study in nearly 290,000 patients suggests that cool climate may be an underrated issue for health that deserves more attention.

Recruitment of leukocytes is a hallmark of stent thrombosis Posted: 30 Aug 2015 12:02 PM PDT Recruitment of leukocytes is a hallmark of stent thrombosis, according to new results. The findings suggest that immune cell mediated thrombotic processes may be a realistic target for novel therapies to prevent stent thrombosis.

Cold weather associated with higher risk of severe heart attack Posted: 30 Aug 2015 12:02 PM PDT Cold weather is associated with a higher risk of severe heart attack, according to new research. The six year study found that each 10°C drop in temperature was associated with a 7% increased risk of ST-elevation myocardial infarction (STEMI), the most severe form of heart attack.

Refractory cardiac arrest patients brought to hospital with ongoing CPR can recover Posted: 29 Aug 2015 09:37 AM PDT Refractory cardiac arrest patients brought to hospital with ongoing cardiopulmonary resuscitation (CPR) can survive with good brain function, according to research in nearly 4,000 patients.

Pollution and weather influence outcomes after heart attack Posted: 29 Aug 2015 09:37 AM PDT Pollution and weather influence outcomes after a heart attack, according to new research.

Prolonged television watchers have higher risk of fatal pulmonary embolism Posted: 29 Aug 2015 09:37 AM PDT Prolonged television watchers have a higher risk of fatal pulmonary embolism, a condition associated with long haul flights, reveals research.

Coffee linked with increased cardiovascular risk in young adults with mild hypertension Posted: 29 Aug 2015 09:37 AM PDT Coffee drinking is associated with increased risk of cardiovascular events (mainly heart attacks) in young adults (18-45) with mild hypertension.The 12-year study in more than 1,200 patients found that heavy coffee drinkers had a four-fold increased risk while moderate drinkers tripled their risk.

Midday naps associated with reduced blood pressure and fewer medications Posted: 29 Aug 2015 09:36 AM PDT Midday naps are associated with reduced blood pressure levels and prescription of fewer antihypertensive medications, according to new research.

Depression and extremes of blood pressure predict highest rates of harmful vascular events Posted: 29 Aug 2015 09:36 AM PDT Depressive symptoms and extremes of blood pressure predict the highest rates of harmful vascular events in patients with existing heart disease, diabetes or stroke, according to new research.

New 'Tissue Velcro' could help repair damaged hearts Posted: 28 Aug 2015 11:29 AM PDT Engineers have just made assembling functional heart tissue as easy as fastening your shoes. The team has created a biocompatible scaffold that allows sheets of beating heart cells to snap together just like Velcro.

The importance of hydration Posted: 28 Aug 2015 10:54 AM PDT In all organisms, water's pH has a profound effect. Because the interaction of carbon dioxide and water explains the natural acidity of water and all accompanying reactions, it is considered a vital reaction by scientists. Researchers recently made a discovery about how dissolved dioxide bonds.

Imitating viruses to deliver drugs to cells Posted: 28 Aug 2015 10:52 AM PDT Viruses are able to redirect the functioning of cells in order to infect them. Inspired by their mode of action, scientists have designed a "chemical virus" that can cross the double lipid layer that surrounds cells, and then disintegrate in the intracellular medium in order to release active compounds. To achieve this, the team used two polymers they had designed, which notably can self-assemble or dissociate, depending on the conditions.

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