Smoking is often associated with diseases that only appear after many years, but the body begins to react almost immediately when tobacco smoke is inhaled.
According to Keck Medicine of USC, tobacco smoke contains thousands of chemical substances, several of which are harmful and can affect the body within a short period of time.
The first signs
The smoke can irritate the nose, mouth, and esophagus. You may start coughing, experience a dry mouth, and develop bad breath.
Tar and heat from the cigarette can also affect the teeth, gums, and lips. Over time, smoking can leave visible marks on the skin as well.
After about 20 minutes, nicotine enters the bloodstream. This can cause both heart rate and blood pressure to rise.
Nicotine can also affect the brain, making it harder to resist the urge to smoke again. At the same time, the sense of smell may become impaired.
After a few hours
If no more cigarettes are smoked, nicotine and carbon monoxide begin to leave the body within 8 to 48 hours, according to Keck Medicine of USC.
Taste and smell may start to return. The body may also begin clearing mucus from the lungs.
Even a single cigarette can trigger noticeable changes in the body. For this reason, experts at Keck Medicine of USC recommend not starting to smoke, or quitting if you already do.
Many people think of sugar as something that mainly affects their waistline or dental health. But behind the scenes, the body is constantly working to process the added sugar that has become a regular part of modern diets.
According to research reviewed by Health, experts are becoming increasingly concerned about how today’s eating habits may affect liver health. The liver plays a crucial role in metabolism, but it can come under strain when it is repeatedly exposed to large amounts of refined sugar.
More than empty calories
When the body receives more sugar than it needs for energy, the excess has to be handled somewhere. That responsibility often falls on the liver.
Several studies suggest that fructose, a type of sugar commonly added to soft drinks and highly processed foods, may contribute to fat accumulation in the liver. Researchers are also examining links between high sugar intake, insulin resistance, and chronic inflammation, all of which may influence liver function over time.
Why drinks matter
Scientists are paying particular attention to sugary beverages. Unlike many whole foods, sweetened drinks can deliver large amounts of sugar in a very short period of time.
Research has found associations between frequent consumption of sugar-sweetened beverages and a higher likelihood of excess fat in the liver. These drinks also tend to provide little nutritional value compared with less processed alternatives.
Small changes can help
Health experts do not necessarily recommend extreme diets. Instead, they often encourage gradual, sustainable improvements.
Choose water more often instead of sugary drinks
Eat more vegetables, fruit, and whole grains
Cut back on ultra-processed foods
Pay attention to the added sugar content listed on food labels
People living with obesity, type 2 diabetes, or elevated triglyceride levels may have a greater risk of developing fatty liver disease and could benefit from discussing liver health with their healthcare provider.
Peeing in the shower may seem harmless, but experts say certain bathroom habits can affect both bladder and pelvic floor health. While research on the topic is limited, several potential concerns have been highlighted, reports Verywell Health.
Your pelvic floor may come under strain
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The pelvic floor muscles support the bladder, bowel, and, in women, the uterus. When these muscles weaken, various health issues can develop.
Standing may make it harder to relax
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For some women, urinating while standing may prevent the pelvic floor muscles from fully relaxing compared with sitting on a toilet.
Straining is not ideal
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If you have to push or strain to urinate, extra pressure is placed on the pelvic floor muscles.
Bladder function could be affected
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According to the article, repeated straining during urination may contribute to future problems with normal bladder function.
Running water can trigger the urge to urinate
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The sound of running water is a well known trigger for people who experience an overactive bladder.
A mental association may develop
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Experts suggest that regularly urinating in the shower could link the sound of running water with the urge to pee.
Odors can become an issue
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One practical downside is that urine may leave unpleasant smells in the shower area.
Infection risk is generally low
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For healthy people, the risk of infection is considered low because urine is diluted by water and washed directly down the drain.
Open wounds require caution
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People with cuts or open skin wounds should be more careful about anything that could introduce bacteria to the affected area.
The connection to UTIs remains unclear
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There is little evidence showing that peeing in the shower directly causes urinary tract infections.
Healthy habits can support bladder health
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Experts recommend staying hydrated, avoiding prolonged delays before urinating, and not straining when emptying the bladder.
Proper toilet posture may help
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Sitting with your feet supported and leaning slightly forward can help the pelvic floor muscles relax more effectively.
Forgetting a name, misplacing your keys, or losing track of a conversation happens to everyone from time to time. That is one reason doctors often use cognitive screening tools to evaluate memory, attention, and other mental abilities, particularly as people age.
One such assessment has recently attracted global attention following US President Donald Trump’s latest health examination at Walter Reed National Military Medical Center. According to information released by the White House, the evaluation included a cognitive test as part of a broader medical review, reports Unilad.
A test used around the world
The assessment is believed to be the Montreal Cognitive Assessment, better known as the MoCA. Developed by Canadian neurologist Dr. Ziad Nasreddine, the test is widely used by healthcare professionals to help identify early signs of cognitive decline and mild impairment.
The screening evaluates several areas of brain function, including memory, concentration, language skills, and executive reasoning. A score of 26 out of 30 or higher is generally considered to be within the normal range.
What does it involve?
Despite often being described as challenging, the test consists of a series of relatively simple tasks designed to assess different cognitive abilities.
Participants may be asked to:
Recall a list of words
Identify animals from drawings
Complete number-based exercises
Draw a clock showing a specific time
Explain relationships between concepts
The assessment typically takes around 10 minutes to complete.
Why it is making headlines
Trump has repeatedly highlighted his performance on cognitive assessments and has said he achieved a perfect score during his latest examination. Following the medical review, White House physician Sean Patrick Barbabella stated that the president’s cognitive and physical condition were excellent and that he remained fully fit to serve.
The results have once again sparked public discussion about cognitive testing and the health standards applied to political leaders, particularly those serving at an advanced age.
According to Listerine, as cited by LADbible, teeth often become more yellow with age because enamel gradually wears down, making the more yellow layer beneath the enamel more visible.
Smoking, poor oral hygiene, and dental injuries can also contribute to changes in tooth color.
Food and drinks
Dark berries such as blueberries and raspberries can stain teeth due to their strong natural pigments.
Listerine recommends rinsing your mouth with water afterward.
Wine can also affect tooth color. Red wine may leave dark stains, while the acidity in white wine can contribute to teeth appearing more yellow.
Hidden causes
Soft drinks are not only a problem because of their sugar content.
The acid found in many soft drinks can damage enamel, making teeth more susceptible to discoloration.
Ketchup may also play a role, as it contains spices that can gradually affect the color of teeth over time.
Yellow teeth are not solely the result of inadequate brushing. According to Listerine, dark berries, wine, ketchup, and soft drinks can all contribute to teeth becoming more yellow, even in people who brush their teeth every morning and evening.
A quick sandwich for lunch, toast in the morning, or bread served alongside dinner. For millions of people, bread is a daily staple, and few stop to think about how it is made before it reaches the table.
Now, a growing number of researchers and health experts are taking a closer look at white bread. According to information from the National Institutes of Health (NIH) and comments from human biologist Gary Brecka, concerns center on both the level of processing and the manufacturing methods used in some commercially produced varieties, reports Unilad.
What makes white bread different?
White bread is typically made from refined flour, which has had the bran and germ removed from the grain. This creates a softer texture and longer shelf life, but it also reduces the amount of fiber and naturally occurring nutrients.
In the United States, some flour is additionally treated with chemical bleaching agents to achieve a brighter appearance and more uniform consistency. Several of these practices are not permitted in Europe.
Researchers examine the risks
Much of the discussion stems from growing research into ultra-processed foods. Studies have linked diets high in these products to an increased risk of obesity, cardiovascular disease, and metabolic disorders.
Scientists are also investigating how highly processed foods may influence gut bacteria, which play an important role in digestion, immunity, and overall wellbeing.
Are there better alternatives?
Experts often point to the following options:
Whole-grain bread
Sourdough bread
Bread made with fewer additives
While no single food determines a person’s health, many nutrition specialists believe that reducing reliance on heavily processed foods may contribute to better long-term health outcomes.
Air fryers have become a staple in modern kitchens. They are quick, energy-efficient, and make it easier than ever to prepare meals at home. But while most consumers focus on convenience, researchers are increasingly examining the materials used inside these popular appliances.
According to research highlighted by the CDC, EBioMedicine, and scientists at Slovak Medical University, certain non-stick coatings may contain PFAS, a group of synthetic compounds commonly referred to as “forever chemicals.”
These substances break down very slowly and can accumulate in both the environment and the human body over time, reports Unilad.
Growing concern
PFAS have long been used in cookware because of their heat-resistant and non-stick properties. However, a growing body of research has linked prolonged exposure to some PFAS compounds with a range of health concerns.
Scientists have investigated potential connections to cardiovascular disease, thyroid disorders, fertility issues, and several forms of cancer. Studies also suggest that a large proportion of the population already has detectable levels of PFAS in their bloodstream.
When the risk increases
Experts stress that air fryers themselves are not considered a major source of exposure under normal conditions. The concern primarily arises when non-stick coatings become scratched, worn, or damaged after extended use.
As these surfaces deteriorate, there may be a greater chance of small amounts of chemicals being released during cooking. For that reason, researchers recommend regularly checking air fryer baskets and trays for signs of wear.
What you can do
Those looking to reduce their exposure may consider:
Replacing cookware with damaged non-stick coatings
Avoiding abrasive cleaning tools that can scratch surfaces
Choosing alternatives such as stainless steel, cast iron, or glass
Researchers are not calling for alarm, but they do encourage consumers to be mindful. Small changes in everyday habits could help reduce overall chemical exposure over the long term.
Many people know the feeling of eating ice cream or drinking something very cold and suddenly experiencing pain in the forehead. However, the pain typically lasts only a short time.
According to the BBC, this happens when the roof of the mouth or the back of the throat is cooled very quickly.
Why you get brain freeze
Neurologist Amaal Starling of the Mayo Clinic explains to the BBC that the cold causes blood vessels to constrict.
They then widen again to restore normal blood flow.
This can activate a nerve that sends pain signals from the face and forehead.
As a result, the pain feels as though it is located in the head rather than in the mouth.
Who is affected
Research reviewed by Irene Toldo of the University of Padua and published in Life suggests, according to the BBC, that cold-stimulus headaches may run in families.
Studies from several countries also indicate that people with migraine often experience the pain more intensely than others.
The BBC reports that researchers have therefore used the phenomenon to gain a better understanding of headaches.
An important signal
Cold-stimulus headaches are generally not dangerous. They can often be avoided by eating ice cream more slowly or allowing the mouth to warm up between bites.
However, if the pain occurs frequently or is particularly severe, it may be worth considering whether other types of headaches are also present.
According to the BBC, this may, in some cases, point to migraine, which can be treated.
Interest in weight-loss drugs such as Ozempic and Wegovy has grown significantly in recent years.
At the same time, many online healthcare companies now offer quick access to similar treatments without requiring an in-person doctor’s visit.
According to KFF Health News, as cited by NBC News, a growing number of physicians and researchers believe this trend is cause for concern.
They argue that patients are not always being thoroughly evaluated before receiving prescriptions for these medications.
More errors reported
Data from the U.S. Food and Drug Administration (FDA) show that the number of reported errors involving GLP-1 medications has increased sharply.
KFF Health News reports that more than 25,000 error-related incidents were recorded in the United States in 2025, compared with just over 2,000 in 2020.
Many of these errors involve incorrect dosing, misunderstandings about how to use the medication, or prescription mistakes.
Limited oversight
Many telehealth companies sell both the consultation and the medication itself.
Critics argue that this model can make it more difficult to ensure that patients receive the guidance and monitoring they need.
Research cited by KFF Health News also shows that an increasing number of prescriptions are being written for people who do not have diabetes, obesity, or excess weight.
Growing risks
Regulators have issued warnings to several companies regarding the marketing of compounded versions of weight-loss medications.
Several manufacturers have also filed lawsuits against businesses selling alternative versions of their products.
Experts fear that the easy online availability of GLP-1 medications could increase the risk of medication errors, side effects, and inadequate patient monitoring.
