Drinking small amounts of alcohol boosts people's sense of smell

As our modern world relies overwhelmingly on sight and sound to transmit information, it might not strike you quite how acute our sense of smell is. In fact we humans can outperform the most sensitive measuring instruments in detecting certain odours, and distinguish smells from strangers from those of our blood relations. Now new research suggests our natural olfactory talents may be even greater when we use modest amounts of alcohol to reduce our inhibitions.A team led by Yaara Endevelt-Shapira tested participants on two days: on one, tests took place before and after drinking a cup of grape juice, and on the other day, before and after a drink containing a dose of alcohol (vodka). Even though the alcohol dose was based on a single measure (35ml) adjusted for the participants’ weight, differences in how people’s bodies process alcohol meant that breathalyser measures of Blood Alcohol Content (BAC) varied from as low as 0.01 to as high as 0.1 across participants.A smell-detection experiment involved participants indicating which of three jars of oil contained a highly diluted scent. Higher BAC did not influence performance, but when a dose of alcohol produced a low BAC (below .06), participants were able to identify more highly diluted scents than they could on their no-booze day.In a second experiment, participants sniffed three scents and tried to tell which one differed from the other (identical) two. High BAC made this discrimination task harder, but aga...
Source: BPS RESEARCH DIGEST - Category: Psychiatrists and Psychologists Authors: Source Type: blogs

Related Links:

Publication date: Available online 24 June 2019Source: Brain, Behavior, and ImmunityAuthor(s): Qiang Liu, Lingli Yan, Miaodan Huang, Haitao Zeng, Senthil Kumaran Satyanarayanan, Zhe Shi, Dingbang Chen, Jia-Hong Lu, Zhong Pei, Xiaoli Yao, Huanxing SuAbstractAlcoholism is a risk factor for the development of cognitive decline and dementia. Here we demonstrated that the glymphatic function in the brain was impaired by alcohol administration. Acute moderate alcohol administration substantially retarded and reduced the entry of subarachnoid cerebrospinal fluid (CSF) via the paravascular space into the cerebral parenchyma, thus ...
Source: Brain, Behavior, and Immunity - Category: Neurology Source Type: research
A library of 14 nontoxic diterpenoid-like compounds (CC50> 70 µM on HepG2 human liver cells) was screened against Mycobacterium smegmatis, Staphylococcus aureus and Escherichia coli to determine antimicrobial activity. Some compounds with a phenethyl alcohol core substituted with a β-cyclocitral derivative demonstrated anti-mycobacterial activity, with the most active being compound 1 (MIC = 23.4 mg/L, IC50 = 0.6 mg/L). Lower activity was exhibited against S. aureus, while no activity was displayed against E. coli. Low cytotoxicity was confirmed on HepG2 cells and newly derived for RAW 264.7 murine macrophage...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Non-alcoholic steatohepatitis (NASH) is the leading cause of chronic liver injury and the third most common reason for liver transplantations in Western countries. It is unclear so far how different fat sources in Western diets (WD) influence the development of non-alcoholic steatohepatitis. Our study investigates the impact of non trans fat (NTF) and corn oil (Corn) as fat source in a WD mouse model of steatohepatitis on disease development and progression. C57/B6J wildtype (WT) mice were fed “standard” WD (WD-Std), WD-NTF or WD-Corn for 24 weeks. WT animals treated with WD-NTF exhibit distinct features of the...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
In this study, we used operant self-administration and yohimbine-induced reinstatement models to examine relapse-like behavior in P rats. Our previous work has demonstrated that P rats show increased expression of the neurokinin-1 receptor (NK1R) in the central nucleus of the amygdala (CeA), and this functionally contributes to escalated alcohol consumption in this strain. We hypothesized that P rats would show increased sensitivity to yohimbine-induced reinstatement that is also mediated by NK1R in the CeA. Using Fos staining, site-specific infusion of NK1R antagonist, and viral vector overexpression, we examined the infl...
Source: Neuroscience - Category: Neuroscience Source Type: research
The Food and Drug Administration (FDA) on Fridayapproved Vyleesi (bremelanotide) to treat premenopausal women for acquired, generalized hypoactive sexual desire disorder (HSDD). HSDD (classified as female sexual interest/arousal disorder inDSM-5) is characterized by low sexual desire that causes distress and cannot be explained by a comorbid physical or psychiatric illness, the side effects of substance use or medications, or severe relationship problems. Acquired HSDD means a woman has previously experienced sexual desire (it has not been a lifelong problem).“There are women who, for no known reason, have reduced se...
Source: Psychiatr News - Category: Psychiatry Tags: blood pressure female sexual interest/arousal disorder hypoactive sexual desire disorder naltrexone premenopausal women sexual dysfunction Vyleesi Source Type: research
In this study, 48 herbal based products (41 for the pediatric population) were analyzed for the presence of ethanol and residual solvents. Ethanol was not detected in only 12% of the products designed for infants or toddlers aged under 2, and not quantified in only 5 of 14 ‘alcohol free’ products. Actual content was higher than labeled in six out of 11 samples with specified ethanol quantity. WHO proposed requirement for ethanol content in products intended for use in children under the age of 6 (
Source: Regulatory Toxicology and Pharmacology - Category: Toxicology Source Type: research
June isPTSD Awareness Month. Posttraumatic Stress Disorder (PTSD) can occur inchildren and adults who've experienced or witnessed a traumatic event. This can include a natural disaster, accident, physical/sexual/emotional abuse, terrorist act, war/combat, rape or other types of violent personal assaults.Post Traumatic Stress Disorder is a treatable mental health disorder. Symptoms of PTSDIntrusive memories: Upsetting dreams or reoccurring flashbacks about the event.Avoidance: Avoiding the memory of the event, or places and people that remind you of the event.Negative changes in thinking or mood: Feeling numb...
Source: Dr. Deborah Serani - Category: Psychiatry & Psychology Tags: awareness campaigns PTSD. Source Type: blogs
BACKGROUND: In adults, it has consistently been observed that with equal alcohol consumption levels, alcohol harms individuals with low socioeconomic position (SEP) more than individuals with high SEP. It is unknown if this so-called alcohol harm paradox i...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Adolescents Source Type: news
This study sought to inform research with noncollege-attending emerging adults, an at-risk, and understudied population, by identifying patterns of response following a brief alcohol intervention. This study was a reanalysis of data from...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Adolescents Source Type: news
ConclusionsAlcohol use was prevalent among victims of IPV homicide, and more-restrictive alcohol policies were associated with reduced odds of alcohol involvement. Strengthening alcohol policies is a promising strategy to reduce alcohol-involved IPV homicide victimization.
Source: American Journal of Preventive Medicine - Category: International Medicine & Public Health Source Type: research
More News: Alcoholism | Brain | Eyes | Neurology | Psychiatrists and Psychologists | Study