health and wellness
Heat waves can leave homes dangerously hot – even for young, healthy adults
Heat waves can turn homes into dangerous heat traps—especially during blackouts or in houses without AC—pushing indoor temperatures and humidity into lethal territory even for young, healthy adults, not just the elderly.
Heat waves can leave homes dangerously hot – even for young, healthy adults
Zoltan Nagy, Eindhoven University of Technology
Most people know that heat waves can be dangerous, but what they may not realize is that the heat indoors can be much worse than outdoors.
When the power goes out and air conditioning stops, or in homes without cooling, a house starts to function like a greenhouse during a heat wave. Heat enters through windows and walls and has nowhere to go. Air stagnates.
Within hours, indoor temperatures can climb well above what the thermometer shows outside, especially on upper floors and in rooms with south-facing windows. Over longer periods, especially if temperatures don’t cool off overnight, conditions can become lethal.
Most heat-related deaths occur indoors. When a heat dome sent temperatures soaring in the Pacific Northwest in 2021, 98% of the more than 600 deaths in British Columbia happened inside homes. Washington and Oregon also saw high numbers of deaths in homes that lacked air conditioning.
In Europe, where only 1 in 10 households have air conditioning, heat waves killed an estimated 60,000 people in 2022 and 47,000 in 2023, largely inside buildings never designed for these temperatures.
People of all ages are at risk in heat waves like these. I spent eight years at the University of Texas at Austin studying how buildings respond to extreme heat. In a recent study, my team assessed the heat risk in every single-family home in Austin.
We found that even younger, healthy adults face far more risk than they realize.
How hot is too hot for a human body?
Your body maintains a core temperature of about 98.6 degrees Fahrenheit (37 degrees Celsius). To cool down, it pushes blood to the skin and sweats. But when air temperature is high, that convective cooling weakens. When humidity is also high, sweat cannot evaporate.
If the body has no way to release heat, core temperature rises. If the core temperature increases past about 104 F (40 C), the body’s thermoregulation starts to fail. Past 109 F (42.8 C), death becomes likely.
What makes indoor heat especially dangerous is that it does not let up at night in homes that lack air conditioning. Outdoor temperatures typically drop after sunset, and someone outside can get a few hours of recovery. But a poorly insulated home that has been absorbing heat all day releases that heat slowly, keeping indoor temperatures elevated through the night. A person inside the home never gets a break.
After two or three nights of this, even healthy people start to be at serious risk for heat-related illnesses.
Why homes heat up more than people expect
People tend to underestimate indoor heat for a few reasons.
One is that the thermostat typically sits on one wall in one room. It does not tell what the temperature is in an upstairs bedroom or near a sun-facing window. In older, underinsulated homes, the actual felt temperature can exceed 90 F (32.2 C) even when a thermostat reads 75 F (23.9 C). The hot walls, ceilings and windows can radiate heat directly onto your body.
Another reason is that people assume all homes respond to heat the same way. However, a newer home with double-pane windows and good insulation acts like a thermos, keeping heat out for a longer time. An older home with single-pane windows and cracks in the walls heats up fast.
Two houses on the same street, exposed to the same outdoor conditions, can have completely different temperatures inside. And in a blackout, where neither home has cooling, those differences can become a matter of life and death.
What we found in Austin
Our study combined two datasets. From Austin’s tax appraisal records, we pulled basic property information, such as the year the home was built, the size and the number of stories for each of the city’s 213,000 single-family homes. We then matched each home to the most similar energy simulation models in a U.S. Department of Energy database that contains thousands of detailed, physics-based building energy models representing the U.S. residential building stock.
Using those models, we simulated each building’s indoor temperatures over time during a three-day heat wave and power outage with outdoor temperatures above 110 F (43 C).
We found that 85% of homes got hot enough to pose a significant risk of death for an elderly occupant. But what surprised us was the risk to younger people.
Under today’s climate conditions in Austin, about 15% of homes already have the potential to get hot enough without air conditioning to pose serious heat risks to healthy adults. Under future warming scenarios, that number jumps to as high as 65% if average summer highs reach 104 F (40 C). Further, climate projections for Austin show that heat waves will double in frequency by the end of the century.
We found three types of buildings and accompanying risks:
- Resilient homes, which are newer and well insulated, tended to have temperature and humidity conditions that would be survivable for an elderly occupant throughout the simulated heat wave with blackout.
- Critical-risk buildings, which are mostly older homes, became dangerous almost immediately.
- And then there was the middle group – homes where temperatures rose slowly during the simulated blackout, day by day, possibly giving occupants a false sense of security until it was too late.
Texas has already seen conditions like our case study’s – a heat wave paired with a power outage. In 2024, a derecho knocked out power for nearly 900,000 Houston households while the heat index climbed to 100 F (37.8 C). Seven weeks later, Hurricane Beryl cut power to 2.6 million homes, leaving them without power for over three days, with temperatures over 90 F (32.2 C).
What you can do to stay safe
If you can’t get cooling at home, there are steps you can take that can help.
Move to the lowest floor of your home, where it will be coolest. Close the blinds and curtains on sun-facing windows. Drink water constantly to stay hydrated, which is essential for regulating body temperature.
If you’re facing a blackout, be sure to also check on elderly neighbors, especially those living alone. You can also try to find a public cooling center; many cities now open them during heat emergencies.
Longer term, upgrades such as reflective window film, attic insulation and lighter-colored roofing can reduce how much a home heats up. After the 2021 heat dome, British Columbia’s coroner recommended updating building codes to address heat.
Our own findings point in the same direction: We propose that new homes should be required by building codes to maintain conditions in which at least light physical activity remains possible for all occupants for at least 72 hours during a power outage.
As summers get hotter with climate change and blackouts become more frequent, the risks of people suffering heat illnesses will only continue to rise.
Zoltan Nagy, Professor of Building Services, Eindhoven University of Technology
Heat waves can leave homes dangerously hot – even for young, healthy adults
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Food and Beverage
4 Daily Brain Health Habits for Better Cognition
Daily Brain Health Habits: Your brain works hard for you, so it’s only fair to return the favor by practicing simple everyday habits to keep this important organ strong and thriving. Start by tweaking your daily routine to focus on these four habits and eating nourishing recipes like California Grape and Sardine Avocado Toast.
4 Daily Brain Health Habits for Better Cognition
(Feature Impact) Your brain works hard for you, so it’s only fair to return the favor by practicing simple everyday habits to keep this important organ strong and thriving.
Start by tweaking your daily routine to focus on these four habits.
Prioritize Sleep
Getting quality sleep is vital for proper brain function. If you find you’ve slipped into the habit of staying up later than you should or notice your sleep being disrupted during the night, those are signs to revisit your sleep hygiene practices. Start by establishing a regular bedtime and wake-up time that will give you the recommended 7-9 hours of sleep. Turn your bedroom into a comfortable refuge from the world – keep it cool and dark, and set up fans or noise machines if you need them to quiet your mind. Avoid consuming caffeine or alcohol too close to bedtime and try switching to a book instead of a screen when it’s time to wind down.
Eat Smart
Just like the rest of the body, the brain is nourished by food. Some of its favorite foods are options rich in healthy fats like fish, avocado, olive oil and nuts, as well as vegetables like leafy greens, which offer carotenoids, and fruits such as grapes, which deliver antioxidants and other polyphenols.
Combine several of these powerful brain-boosting foods at once with this California Grape and Sardine Avocado Toast recipe. The fish is rich in omega-3 fatty acids and the avocado offers a boost of healthy unsaturated fat, while the grapes add protective dietary flavonols, which may help promote anti-inflammatory and beneficial antioxidant activity.
A study published in the scientific journal “Neurology” found a higher intake of certain flavonols – including three naturally found in grapes – is associated with a 48% decreased risk of developing Alzheimer dementia.
Get Moving
Adding even more proof that what’s good for your body is good for your mind, getting regular exercise is one of the best things you can do for your brain. Motivate yourself by choosing a form of movement you genuinely enjoy, whether it’s a daily walk on a nearby nature trail, a dance class, a bike ride or a heart-pumping workout video.
Challenge Your Mind
Don’t forget to give your brain its own workout, too. Doing something mentally stimulating every day is a great way to keep yourself sharp, and there are plenty of ideas to choose from. Try learning a new language, picking up a musical instrument, playing a mind-engaging card or board game, doing a puzzle, reading a book or immersing yourself in a creative writing or art project. The options are nearly endless, and if you want to make your brain extra happy, you can snack on handfuls of grapes as you enjoy your hobby.
Learn more about the connection between grapes and brain health and discover more recipes by visiting GrapesFromCalifornia.com.
California Grape and Sardine Avocado Toast
Prep time: 10 minutes
Servings: 4
- 1 large firm, ripe avocado, halved and pitted
- 4 small slices rustic whole grain bread (1/2-inch thick), toasted or grilled
- 1 individual container sardines in olive oil or water, drained
- 1/2 cup quartered red and black Grapes from California
- Aleppo pepper flakes
- fresh cilantro, snipped
- 1 lemon half
- salt (optional)
- With spoon, scoop avocado out of skin and use fork to coarsely mash.
- Spread onto bread slices and top with whole or torn sardines. Sprinkle grapes over sardines.
- Top with generous sprinkle of Aleppo pepper, cilantro, squeeze of fresh lemon and salt, if desired.
Nutritional information per serving: 290 calories; 11 g protein; 29 g carbohydrates; 16 g fat (50% calories from fat); 2.5 g saturated fat (8% calories from saturated fat); 20 mg cholesterol; 210 mg sodium; 6g fiber.
SOURCE:
California Table Grape Commission
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Health
Truth Initiative and NAACP Expand Partnership to Advance Health Equity and Increase Access to Proven Quit Resources
Health Equity
When we talk about health equity, we’re really talking about who gets the chance to live a longer, healthier life — and who has been systematically denied that chance. Tobacco and nicotine addiction remain a clear example of that imbalance, especially in Black communities and other historically marginalized groups.
That’s why Truth Initiative and the NAACP are expanding their partnership to increase access to proven quit support and to reframe nicotine cessation as something bigger than an individual choice. Their new phase of collaboration launches the Breath of Freedom Movement, powered by Truth Initiative and the NAACP — a community-centered effort that combines civil rights leadership with public health expertise.
A movement rooted in community and accountability
The Breath of Freedom Movement builds on the work of the Breath of Freedom coalition, an alliance led by Truth Initiative across Black-led organizations. The coalition’s mission has been to reclaim the narrative around tobacco use, confront the ways the industry has shaped that narrative, and connect people to support that respects culture, history, and lived experience.
This expansion arrives at a critical moment. According to the press release, approximately 45,000 Black Americans die each year from smoking-related illness. The burden is not accidental — it has been driven in large part by decades of targeted marketing of menthol cigarettes and other flavored tobacco products.
The release highlights another stark disparity: more than 80% of Black smokers use menthol cigarettes, compared with 43% of adult smokers overall. Menthol products are often described as easier to start and harder to quit, which makes access to culturally relevant cessation resources not just helpful, but essential.
Launching at the NAACP National Convention in Chicago
The Breath of Freedom Movement will officially launch at the NAACP National Convention, taking place July 18–22, 2026, in Chicago. The convention theme, “We, The People,” commemorates the nation’s 250th anniversary and marks 100 years since Chicago first hosted the NAACP conference in 1926.
As part of the convention programming, Truth Initiative will debut the Rise Together EXperience: Culture, Community, and Nicotine-Free Lives — an immersive mobile exhibit designed to explore how tobacco use and industry marketing tactics have impacted Black, Hispanic, and LGBTQ+ communities. The exhibit is also meant to connect people to quit support in a way that feels accessible and grounded in real community conversations.
What the expanded partnership will do
Truth Initiative and the NAACP say this partnership is designed to move beyond awareness and into action — action that’s rooted in community spaces where trust already exists. The expanded collaboration will focus on:
- Hosting culturally relevant presentations, community forums, workshops, and healing-centered discussions about the health consequences of smoking, vaping, and nicotine addiction, with a focus on disproportionate impacts.
- Advancing the Breath of Freedom mission by reframing nicotine cessation as an act of liberation and resistance to the tobacco industry’s exploitation of Black communities.
- Co-developing and distributing culturally relevant public health content, including toolkits, digital resources, and community-informed cessation materials.
- Promoting awareness of and access to proven quit resources — including Truth Initiative’s EX Program — in partnership with Black-led organizations, faith-based groups, LGBTQ+ advocates, and other culturally aligned stakeholders.
- Strengthening local, regional, and national outreach strategies that elevate community voices and mobilize grassroots support for nicotine prevention and cessation.
In the release, Dr. Chris T. Pernell, Director of the NAACP Center of Health Equity, underscored that health equity requires more than information — it requires accountability and community-rooted action that connects people with tools for healing and freedom from addiction.
Quitting as liberation — not just willpower
One of the most important shifts in this work is the language: quitting isn’t framed as a moral test or a matter of “just trying harder.” Instead, it’s positioned as a supported process — and as a way for communities to push back against systems that have profited from addiction.
As Dr. Dartis noted in the announcement, the tobacco industry has targeted Black communities for generations with products and marketing designed to drive nicotine addiction. The expanded partnership aims to meet people where they are — in trusted spaces, through meaningful conversations, and with resources that recognize culture and lived experience.
Bridging public health data and lived experience
The press release also notes that Dr. Dartis will be featured in an upcoming NAACP docuseries focused on bridging the gap between public health data and the lived experiences of Black men in America. The project will explore the systems, relationships, and environments that shape health outcomes, while highlighting resilience and calling for accountability from the systems meant to serve communities.
How to get free quit support
If you or someone you care about is ready to quit smoking, vaping, or other nicotine products, free support is available through Truth Initiative’s EX Program.
- Text JoinFreedom to 88709
- Visit exprogram.com
Local resources (Arizona)
If you’re in Arizona and want additional, local support, consider these options:
- Arizona Smokers’ Helpline (ASHLine): Call 1-800-55-66-222 or visit https://www.azdhs.gov/ashline/ for free quit coaching and support for Arizona residents.
- Arizona 2-1-1: Dial 2-1-1 (or visit 211arizona.org) to get connected to local health services, community programs, and support resources.
- Primary care clinics and community health centers: If you have a regular doctor or use a community clinic, ask about quit plans and nicotine replacement options. Many clinics can help you build a step-by-step approach and connect you to additional programs.
The takeaway
The Breath of Freedom Movement is a reminder that nicotine addiction doesn’t exist in a vacuum. It’s connected to policy, marketing, access to care, and the long history of unequal health outcomes in the United States. By combining community leadership with proven quit resources, Truth Initiative and the NAACP are working to ensure that communities most impacted by tobacco-related harm have the support they need to heal, quit, and thrive.
Credit: Truth Initiative. News provided by Truth Initiative via PRNewswire, July 17, 2026.
- Related Links
- https://www.exprogram.com (or exprogram.com)
- https://www.azdhs.gov/ashline/
- https://211arizona.org
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Health
Black Girl Sunscreen Founder Shontay Lundy Inducted into Sigma Gamma Rho’s 2026 TrailblazerΣ Honorary Membership Class
Shontay Lundy, Founder and CEO of Black Girl Sunscreen, has been inducted into Sigma Gamma Rho Sorority’s 2026 TrailblazerΣ Honorary Membership Class—an honor recognizing women whose leadership and accomplishments create measurable impact across culture and community.
Announced July 29, 2026, the recognition places Lundy among 21 accomplished women celebrated for reshaping their industries through service, sisterhood, and scholarship. For Lundy, it’s a milestone that reflects not only entrepreneurial success, but also the broader advocacy work that has helped expand how the beauty and skincare world talks about inclusive sun care and representation.
What the TrailblazerΣ Honorary Membership Recognizes
Sigma Gamma Rho Sorority, founded in 1922, is a national collegiate sorority with more than 100,000 members across 500 chapters worldwide. Built on principles of leadership and service, the organization is known for its long-standing commitment to community outreach—captured in its slogan, “Greater Service, Greater Progress.”
Honorary membership is among Sigma Gamma Rho’s most prestigious distinctions. It is awarded to women whose work excels in their field while also positively influencing society at large. The TrailblazerΣ class, in particular, highlights leaders who redefine what’s possible and open doors for others.
A Recognition Linked to a Larger Mission
Lundy founded Black Girl Sunscreen in 2016 to address a persistent gap in the market: sun protection products that work well for people of color, without leaving an unwanted white cast. Since then, the brand has become a recognizable name in inclusive skincare—helping educate consumers on sun safety and shifting public perception around who sunscreen is “for.”
Her induction into Sigma Gamma Rho’s 2026 class connects that work to a larger legacy of women breaking barriers across industries. It also underscores the brand’s impact beyond product innovation—positioning Black Girl Sunscreen as part of a wider movement toward representation, health education, and community-driven leadership.
In a statement, Lundy emphasized that the honor reflects shared values and a commitment to creating opportunities for others:
“To be welcomed into Sigma Gamma Rho is incredibly meaningful because it represents more than recognition—it reflects a shared commitment to service, leadership, and creating opportunities for others. Throughout my journey, I’ve always believed success should open doors, not just for yourself, but for the women coming behind you. I’m honored to join a sisterhood whose legacy is rooted in that same purpose, and I look forward to continuing that work together.”
A Class of Leaders Across Industries
Lundy joins a group of honorees spanning business, sports, media, and public service—reflecting Sigma Gamma Rho’s tradition of recognizing women whose achievements extend beyond personal success to broader community impact.
As the beauty industry continues to evolve toward more inclusive products and messaging, Lundy’s recognition signals how far the conversation has come—and how much it still depends on leaders willing to challenge assumptions, educate consumers, and build brands with purpose.
About Black Girl Sunscreen
Black Girl Sunscreen is a beauty and skincare company founded by Shontay Lundy in 2016 to address the lack of sun protection products formulated for people of color. The brand’s mission centers on educating consumers about safe skin practices and sun protection, while providing premium sun care products formulated for melanated skin and designed to be exceptional for everyone.
For more information, visit blackgirlsunscreen.com.
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