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New research suggests sleep quality may matter even more for older women already at higher genetic risk

• A new study found that poor sleep was linked to memory problems and Alzheimers-related brain changes in older women with higher genetic risk for the disease.

• Researchers studied 69 women over age 65 using sleep questionnaires, memory tests, and brain scans that measured tau protein buildup.

• Experts say sleep complaints could someday help identify people who may benefit from earlier monitoring or prevention strategies.

For years, scientists have known theres a connection between sleep and brain health, but new research from the University of California San Diego is adding another piece to the puzzle.

The study suggests that poor sleep may be tied to early Alzheimers-related changes in older women who are already genetically more vulnerable to the disease.

The findings are especially notable because women make up nearly two-thirds of Alzheimers cases, and they also tend to report more sleep problems than men as they age. Researchers say the results dont prove that poor sleep causes Alzheimers, but they do suggest sleep issues may be an important warning sign and possibly even a future target for prevention efforts.

The study

In the study, researchers examined 69 women ages 65 and older who were part of the Women Inflammation Tau Study, an ongoing project focused on aging and Alzheimers risk.

Participants answered questions about their sleep quality, completed memory testing, and underwent brain imaging scans that measured tau, a protein closely linked to Alzheimers disease.

The researchers found a clear pattern among women who had a higher genetic risk for Alzheimers.

The results

Those who reported worse sleep also tended to perform more poorly on visual memory tasks and had greater tau buildup in brain regions affected early in the disease.

Interestingly, the same relationship was not seen in women with lower genetic risk. Researchers also noted that the connection appeared specific to visual memory rather than verbal memory.

Scientists say the relationship between sleep and Alzheimers may work both ways. Earlier research has suggested that disrupted sleep could contribute to abnormal protein buildup in the brain, while Alzheimers-related brain changes may also interfere with healthy sleep patterns.

For consumers, the study highlights something many people tend to dismiss: ongoing sleep complaints may be worth bringing up with a doctor, especially for older adults concerned about cognitive health.

Researchers emphasized that self-reported sleep assessments are inexpensive and easy to administer, which could make them a practical tool for identifying people who may benefit from closer monitoring in the future.

At the same time, experts caution that this was a relatively small study focused specifically on older women, so more research is needed before drawing broad conclusions. Still, the findings add to growing evidence that sleep health may play a larger role in healthy aging than many people realize.

New research suggests convenience foods could quietly impact attention span

• A new Australian study linked higher intake of ultra-processed foods to lower attention and focus scores.

• Researchers found the effect appeared even in people who otherwise followed healthy eating patterns.

• The study adds to growing concerns about how food processing itself may affect brain health.

People often think of ultra-processed foods (UPFs) as a problem mainly because they contain extra sugar, salt, or unhealthy fats. But new research suggests the issue may go deeper than nutrition labels alone.

A study led by researchers at Monash University found that diets higher in ultra-processed foods were associated with poorer attention and focus, even among people who generally ate healthy diets.

To put our findings in perspective, a 10% increase in UPFs is roughly equivalent to adding a standard packet of chips to your daily diet, researcher Dr. Barbara Cardoso said in a news release.

For every 10% increase in ultra-processed food a person consumed, we saw a distinct and measurable drop in a persons ability to focus. In clinical terms, this translated to consistently lower scores on standardized cognitive tests measuring visual attention and processing speed.

The study

The findings were published in the journal Alzheimer's Associations Alzheimers & Dementia: Diagnosis, Assessment & Disease Monitoring and were based on data from more than 2,100 Australian adults who were middle-aged or older. None of the participants had any history of dementia or cognitive decline.

Researchers examined participants eating habits alongside cognitive testing that measured things like visual attention and processing speed.

What the study found

According to the researchers, even a modest increase in ultra-processed food intake was linked to noticeable differences in focus.

The study noted that a 10% increase in ultra-processed foods was tied to lower performance on attention-related cognitive tests.

Ultra-processed foods can include items like packaged snacks, soft drinks, ready-made meals, and other heavily manufactured products. Researchers said participants in the study got about 41% of their daily energy intake from these foods, which closely reflects broader eating patterns in Australia.

One of the more surprising findings was that the connection remained even among people following otherwise nutritious eating patterns, including Mediterranean-style diets.

Researchers said that suggests the level of processing itself may play an important role.

Food ultra-processing often destroys the natural structure of food and introduces potentially harmful substances like artificial additives or processing chemicals, Dr Cardoso said.

These additives suggest the link between diet and cognitive function extends beyond just missing out on foods known as healthy, pointing to mechanisms linked to the degree of food processing itself.

The study did not find a direct link between ultra-processed foods and memory loss, but researchers emphasized that attention is still a critical part of brain health. Focus and processing speed help support learning, problem-solving, and other everyday cognitive functions.

For consumers, the findings are less about eliminating every packaged food and more about paying attention to how much of the diet comes from heavily processed products. Researchers say the study adds to growing evidence that brain health may be influenced not only by what nutrients people consume, but also by how foods are made.

Your U.S. drivers license might not be enough abroad

• Your U.S. license may not work overseas: Countries like Italy, Japan, and Greece often require an International Driving Permit (IDP) to legally drive or rent a car.

• A $20 permit can save major headaches: An IDP acts as a translation of your license and can help you avoid denied rentals, fines, or insurance issues abroad.

• Always check rental car rules before your trip: Some rental companies require extra paperwork even if the country technically accepts a U.S. license.

Planning a summer road trip through Europe or overseas? Before you rent that car, its important to realize that your U.S. drivers license may not be enough.

A new study from eCarsTrade found that American drivers licenses rank among the weaker licenses globally when it comes to international recognition. This is especially true when compared to European countries like France, Bulgaria, and Romania.

The issue largely comes down to international agreements between countries and whether travelers need an International Driving Permit (IDP) to legally drive abroad. The bottom-line: dont assume your drivers license automatically works everywhere.

Why this matters for travelers

Some countries flat-out legally require an IDP alongside your U.S. license. Others may not strictly require it by law, but rental car companies will often require it anyway.

Without the proper the documents, travelers will potentially face:

• Denied rental car pickups
• Fines during traffic stops
• Insurance claim problems after an accident
• Delayed trips and expensive last-minute transportation costs

This becomes especially important during the busy summer travel season when rental companies tend to be crowded and policies are more strictly enforced.

What exactly is an International Driving Permit?

An International Driving Permit is basically an official translation of your U.S. drivers license into multiple languages.

Its not a standalone license. You will still need to have your actual drivers license with you.

For Americans, IDPs are typically valid for one year and are issued through organizations like AAA and AATA before your trip. They usually will cost you a $20 permit fee, as well as a $10 passport photo fee.

Countries where travelers commonly need an IDP

American travelers frequently run into IDP requirements in places like:

• Italy
• Greece
• Austria
• Japan
• Thailand
• Parts of Eastern Europe

Even within Europe, rules can vary heavily by country.

Pro tip: Never assume because one European country accepts your U.S. license that neighboring countries will too. Border-crossing road trips can create problems if you only researched the rules for your arrival country.

How to avoid rental car surprises overseas

One of the biggest mistakes travelers make is only checking government travel websites and ignoring rental car company rules.

Even if local law technically allows a U.S. license, keep in mind that rental agencies may still require:

• An IDP
• A passport
• A credit card in the drivers name
• Proof of insurance
• Extra age-related fees for younger drivers

Before traveling, be sure to check:

• The countrys official tourism website
• Your rental companys exact policy
• Your credit cards rental insurance coverage
• Whether your auto insurance works internationally

Why European licenses dominate globally

According to the study, European countries dominate the rankings because many belong to reciprocity agreements which automatically recognizes licenses across 30+ countries.

Specifically, France ranked No. 1 globally thanks to broad international recognition and long-term license validity, while several Eastern European countries ranked highly because of lower licensing costs.

For American travelers, the takeaway is that driving overseas requires a little more planning. A little bit of paperwork before your trip can save you from major headaches once you land.

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