With the holiday season high, there is festive cheer, family gatherings and also an undeniable increases in alcohol consumption that fills the air. Christmas and New Year's Eve celebrations to spring break and bachelor parties and sporting events that bring together huge crowds for celebrations mean that drinking becomes synonymous with partying. But behind the revelry lies a much darker behavior: high-intensity drinking.

Alcohol is the most widely used substance in the United States; it has been reported that 84% of adults aged 18 and older reported lifetime use. Moderate drinking is socially acceptable, but high-intensity drinking is an alarming trend. The behavior of consuming eight or more drinks over a few hours for women and 10 or more for men exceeds binge drinking and significantly increases risk for harm.

High-intensity drinking is far from being just a mere passing concern; it is instead a public health crisis. The burden is even greater as 29 million people in the United States suffer from alcohol use disorder. That has caused over 140,000 deaths annually while accounting for 200,000 hospitalizations and 7.4% of visits to emergency departments in the United States. However, only 7.6% of these affected get treated, thus forming a glaring gap in handling this concern.

What Is High-Intensity Drinking?

High-intensity drinking is a dangerous escalation from traditional binge drinking, characterized by consuming double or triple the standard binge amounts. While binge drinking involves four or more drinks for women and five or more for men, high-intensity drinkers often surpass these levels, leading to blood alcohol concentrations (BAC) exceeding 0.2%—a level that significantly impairs judgment and motor skills.

According to Dr. George Koob, the director of the National Institute on Alcohol Abuse and Alcoholism (NIAAA), high-intensity drinking is one of the factors that intensify the risks of injuries, overdose, and death. It is also very highly associated with the onset of AUD, since the chance of addiction increases with increased alcohol consumption per occasion.

Blackouts and Memory Loss Risks

One of the most troubling consequences of high-intensity drinking is alcohol-induced blackouts, periods of amnesia where individuals may appear functional but are incapable of forming memories. Blackouts occur when alcohol disrupts the hippocampus, the brain region responsible for memory formation.

Blackouts are often categorized into two types:

1. Fragmentary Blackouts: Characterized by spotty memory, where recalling certain details can trigger partial recollection.

2. En Bloc Blackouts: Significant amnesia for hours, wherein no memory is created at all, even if tried to be recalled.

Aside from memory loss, intense binge drinking is linked with poor decision-making, violence, injury, and conflicts in personal relationships.

Why Holidays and Special Events Are Hotbeds for Excessive Drinking

Holidays and celebrations create the perfect storm for high-intensity drinking. According to research, adults drink nearly double the amount of alcohol during holidays like Christmas and New Year's Eve than they do at any other time of the year. It is during these periods of social gathering, holiday stress, and seasonal sadness that people drink in excess.

For college students, experiences like spring break and 21st birthdays increase the danger. Some studies indicate that students, especially those who travel with buddies to spring break, indulge in more alcohol and make more serious decisions than any student who remains at home or goes with their family to other destinations. Sporting events are, too, notorious for promoting drunk consumption, especially among male customers. Alcohol consumption usually goes high during Super Bowl Sunday, thus leading to games day violence and arrests.

Consequences of Heavy Intensity Drinking

High-intensity drinking impacts not only physical health and mental well-being but also social relationships.

Acute Risks

- Alcohol poisoning

- Severe dehydration and electrolyte imbalances

- Hypoglycemia

- Risky sexual behavior

- Injuries and accidents

Chronic Risks

- Liver damage, alcoholic hepatitis, and cirrhosis

- Cardiovascular diseases such as arrhythmias and cardiomyopathy

- Neurological damage, including memory deficits and blackouts

- Progression to alcohol dependence or AUD

Psychological Impact

High-intensity drinking is strongly linked with increased risks of depression, anxiety, and suicidal ideation. Poor decision-making during episodes can lead to long-lasting consequences, including damaged academic, professional, or personal outcomes.

How to Address the Problem

Combating high-intensity drinking requires education, early intervention, and accessible treatment options. The NIAAA has defined high-intensity drinking to be distinct from binge drinking and has called for targeted approaches to decline prevalence and associated harms.

One promising treatment option is naltrexone, which a medication helps control alcohol cravings. Encouraging in preliminary evidence, more extensive clinical trials will be necessary to ascertain its efficacy more specifically in high-intensity drinkers.

As we head into the holiday season and other special occasions, it is important to heighten awareness of the dangers of high-intensity drinking. A good understanding of long-term consequences and seeking help when alcohol-related issues arise can be the difference between life and death. Celebrations should be about joy and connection, not about the gateway to harm.

If you or someone you know drinks at dangerous levels or have an alcohol use disorder, there is help available. Remember, for suspected cases of alcohol poisoning, dial 911. In this way, we can foster healthier relationships with alcohol and create safer environments for everyone.

Squirrels could be natural hosts of the mpox virus (MPXV) -- that causes monkeypox disease -- according to a recent study by German researchers.

The team from the Helmholtz Institute for One Health (HIOH) identified the fire-footed rope squirrel (Funisciurus pyrropus) as a likely natural reservoir of the MPXV.

The study published in the journal Nature revealed that sooty mangabeys – a primate found in West Africa -- can contract mpox by eating infected squirrels. The disease may present mild lesions, but it can also cause more severe skin lesions or even be fatal.

"Identifying the animal sources of the virus and the exposure routes that lead to inter-species transmission are key steps towards understanding spillover mechanisms and developing effective prevention measures to mitigate the risk of transmission to humans," said Livia V. Patrono, one of the senior authors at HIOH.

Squirrels Suspected MPXV Hosts

While squirrels have long been suspected as potential reservoirs for MPXV, their role was confirmed after an investigation of an mpox outbreak among wild sooty mangabeys (Cercocebus atys) in Côte d'Ivoire.

During the outbreak, reported in early 2023, nearly one-third of the primates showed clinical signs of disease, and four infants died.

The team conducted viral genome sequencing and found that the infected monkeys carried a virus that was nearly identical to an MPXV strain identified in a fire-footed rope squirrel found dead 12 weeks earlier nearby.

Further, the team analyzed fecal samples from the mangabeys. A sample collected eight weeks before the outbreak's onset contained DNA from both the virus and the rope squirrel. This provided strong evidence of interspecies transmission at that moment.

Sooty mangabeys have been previously observed catching and eating fire-footed rope squirrels, which provide a direct route for the transmission of viruses.

Mpox Continues To Spread Globally

Although mpox is no longer a public health emergency, outbreaks of clade I and clade II strains of the mpox virus are continuing in many countries around the world, especially in Africa.

Last week, Madagascar announced the country's first death from mpox, a 3-year-old girl from the island nation’s eastern city of Toamasina.

The WHO has also confirmed that two cases of the recombinant strain – combining genomic elements of clades Ib and IIb of the monkeypox virus (MPXV) – have been identified to date: one in the United Kingdom and one in India.

Mpox is an infectious disease caused by the monkeypox virus (MPXV), part of the Orthopoxvirus genus, which also includes the virus that causes smallpox.

It spreads through close physical contact, including sexual contact, and in some cases through contaminated materials or respiratory droplets.

Symptoms typically include fever, swollen lymph nodes, rash, and/or lesions.

The global health body has also urged all countries to “remain alert to the possibility of MPXV genetic recombination.” It has also urged for continued epidemiological surveillance, sequencing, vaccination of at-risk groups, and infection prevention and control measures.

An international group of scientists has created an artificial intelligence tool that can estimate a woman’s likelihood of developing breast cancer within the next four years.

The AI tool, known as the BRAIx risk score, analyzes mammogram images to generate an individualized risk assessment and flag women who may face a higher chance of developing the disease.

It may not only show the current risk but also predict the future risk, enabling early detection and treatments for a better outcome.

According to the findings published in The Lancet Digital Health journal, nearly one in 10 women ranked in the top 2 percent of risk by the AI tool were diagnosed with breast cancer within four years. This was despite previously receiving a clear screening result.

“These risk scores enable future development of personalized screening pathways to transform population breast cancer screening and save lives,” said corresponding author Helen M. L. Frazer of the University of Melbourne.

Frazer noted that identifying women who appear cancer-free but carry very high risk -- comparable to those with inherited BRCA1 or BRCA2 mutations -- will unravel both hereditary and non-hereditary causes of breast cancer.

From one-size-fits-all screening to personalization

Breast cancer screening programs have significantly lowered mortality rates -- by roughly 40-50 percent among women aged 50 to 74. However, most screening systems still apply the same approach to all women, regardless of individual risk.

Traditional screening tools use genetics, breast density, and questionnaires to estimate breast cancer risk. On the other hand, new AI-based screening tools, such as BRAIx personalizes screening by gathering information already present in breast scan images to better identify who is at higher risk.

“Our results show that conventional mammographic density is a far weaker predictor of breast cancer risk than the BRAIx risk score, even for interval cancers,” the researchers said in the paper. Interval cancers are aggressive tumors diagnosed after a negative mammogram.

The BRAIx Tool

The BRAIx risk score was developed using mammograms from nearly 400,000 women. To prove its efficacy, the AI tool was tested on data from almost 96,000 women from Australia and then confirmed in an independent Swedish population of over 4,500 women.

The findings showed that:

• The BRAIx risk score estimated breast cancer risk more accurately than the traditional risk factors, such as breast density, country of birth, and even family history.

• For the top 2 percent of women with the highest BRAIx risk score, the probability of a cancer diagnosis within 4 years was 9.7 percent -- a risk level exceeding that typically seen in women with inherited BRCA1 or BRCA2 mutations.

The BRAIx risk score can:

• Make breast screening more personalised,
• Improve early cancer detection,
• Reduce false alarms,
• Save lives without increasing costs

Global Breast Cancer Burden

Breast cancer continues to be the most common cancer among women worldwide.

A recent study published in The Lancet Oncology journal predicted that the number of new cases of the deadly disease will reach more than 3.5 million globally in 2050 -- rising by a third from 2.3 million in 2023.

Annual deaths from the disease will also rise by 44 percent -- from around 764,000 to 1.4 million.

However, not smoking, getting sufficient physical activity, lowering red meat consumption, and having a healthy weight can help prevent over a quarter of healthy years lost to illness and premature death from breast cancer.

People who survived a COVID-19 infection can be at significant risk for kidney disease, acute kidney injury, and chronic kidney disease. compared to individuals who were not infected, according to a study.

The study, published online in the journal Communications Medicine, revealed that COVID patients have

• a 2.3-times higher risk of acute kidney injury
• a 1.4-times higher risk of chronic kidney disease
• a 4.7 times higher risk of kidney failure

“While we’re in the post-pandemic era, this shows that COVID-19 history is an important variable when considering the long-term impact of the infection on kidney function and disease,” said first author Yue Zhang, who was at Pennsylvania State University, US, while conducting the study. Zhang is currently a postdoctoral scholar at Johns Hopkins Bloomberg School of Public Health.

How Was The Study Conducted?

For the study, data on over 3 million working-age adults in the United States were analyzed.

The team compared the effect of influenza, another common viral infection that affects kidney health, and people with a history of COVID infection on kidney infections.

Using a machine learning model, the individuals were followed between 180 and 540 days for the emergence of new acute or sudden kidney disease.

The results showed that:

• Both COVID and the flu can worsen kidney health
• Flu caused a mild and temporary effect
• COVID increased the risk of acute kidney injury for a longer duration
• COVID survivors developed kidney disease within a few hours to a few days
• COVID patients had a longer-term chronic and end-stage kidney disease.

How COVID Worsens Kidneys Health

The Penn State researchers explained that kidney cells express high levels of the primary protein receptors that SARS-CoV-2 uses to enter and infect cells. Kidney cells also produce specialized enzymes that help viruses enter cells.

According to Kidney Health Australia, an acute COVID infection can impact the kidneys with fevers and respiratory symptoms, and/or worsening blood sugar control.

The US National Institutes of Health stated that renal dysfunction is an increasing clinical indicator of COVID propagation.

Citing several studies, the NIH said that the most common clinical manifestation is proteinuria -- found in more than half of the COVID patients. In addition, hematuria, elevated blood urea nitrogen, and elevated serum creatinine are other common features in Covid survivors with poor kidney health.

Nasr Ghahramani, Professor of Medicine at Penn State College of Medicine, stressed the need for COVID survivors, especially those with diabetes and high blood pressure, to take "more frequent and more prolonged monitoring of their kidney function" to enable early detection and better outcomes.