Tech
Do You Need A DEXA BD/BC Scan?
For most people, though, “if results are strong, maybe you don’t need another scan for five years,” says Wagner. “If they’re lower, lifestyle interventions can help, and you may want to recheck in a year.”
Radiation exposure is negligible, less than a chest x-ray. But the psychological impact can be more complicated. For some, the numbers motivate: “When I did a body composition test at 36, I had way more body fat than I expected,” Cheema says. “That pushed me to change my workouts and eating patterns in ways that improved my health—something BMI alone wouldn’t have prompted.”
For others, especially those with histories of disordered eating or body image issues, it can be destabilizing and overwhelming. Numbers can become another metric to obsess over rather than a tool for health. “It can be overwhelming if you don’t have a clinician to interpret the results,” Gidwani says. “That’s why I review all of my patients’ scans with them.”
Cheema agrees: “Too much detail without guidance risks overwhelming people with information that isn’t clinically actionable.”
“I don’t think DEXA gives too much information compared to, say, a whole-body MRI, which can reveal incidental findings that can cause anxiety and lead to unnecessary interventions,” says Gidwani. “Its data points are actionable: decrease body fat, reduce visceral fat, increase muscle.”
Experts emphasize that actionability is key. “The most important metrics are visceral adipose tissue and total body fat percentage, especially when tracked over time,” Cheema says. “But DEXA also breaks things down by arms, legs, trunk, etc. That can veer into aesthetics rather than health.
Should You Get One?
If you’re 65 or older, or at risk for osteoporosis, your doctor may already recommend a DEXA scan for bone health. For women in perimenopause, when bone density can drop by as much as 20 percent, an early baseline scan could flag risks years before they become urgent.
DEXA also detects sarcopenic obesity, where muscle loss occurs alongside high body fat. “Someone may look normal weight on a scale, but a DEXA can reveal poor muscle-to-fat balance,” Gidwani says.
Beyond those groups, the use case narrows. Athletes, bodybuilders, and people on GLP-1 medications may find the data genuinely useful. For generally healthy adults who exercise, eat decently, and check in with a doctor, many clinicians are indifferent.
“For a healthy individual, I wouldn’t universally recommend it,” Cheema says. “Lifestyle changes and basic care may matter more than getting a DEXA.” There are alternatives—bioimpedance scales, Bod Pods, and AI-enabled wearables—but none are as accurate as DEXA. For now, it remains the most precise, if expensive, tool available.
Final Takeaways
My DEXA results were somewhat humbling. Despite near-daily workouts and a decent diet, the scan flagged more body fat than I expected and the beginnings of osteopenia in my spine. The bright side was an “excellent” visceral fat score, something I’ll be bragging about indefinitely.
Catching early bone loss feels actionable; I can tweak my workouts to prioritize strength and mobility. But the body fat percentages have lived in my brain rent-free ever since, without offering much in return. I don’t plan to shell out a few hundred dollars for another scan anytime soon, so I may never know if my adjustments are actually working.
That’s the paradox of DEXA. For those with medical risks, it can be invaluable. For athletes chasing marginal gains, it’s another knob to turn. But for the rest of us, it’s a reminder that data is only as useful as what you’re willing or able to do with it. In the end, DEXA doesn’t promise longevity so much as it promises numbers, and numbers alone don’t add years to your life.
Meet the Experts
- Jennifer Wagner, MD, MS, chief health and performance officer, Canyon Ranch in Tucson, Arizona.
- Josh Cheema, MD, medical director of Northwestern Medicine Human Longevity Clinic in Chicago, Illinois.
- Pooja Gidwani, MD, MBA, board-certified physician in internal medicine and obesity medicine in Los Angeles, California.
Tech
Universal Music and AI song tool Udio settle lawsuit and partner on new platform, sparking backlash
Universal Music Group and AI song generation platform Udio have settled a copyright infringement lawsuit and agreed to team up on new music creation and streaming platform, the two companies said in a joint announcement.
Universal and Udio said Wednesday that they reached a “compensatory legal settlement” as well as new licensing agreements for recorded music and publishing that will “provide further revenue opportunities” for the record label’s artists and songwriters.
As part of the deal, Udio immediately stopped allowing people to download songs they’ve created, which sparked a backlash and apparent exodus among paying users.
The deal is the first since Universal, along with Sony Music Entertainment and Warner Records, sued Udio and another AI song generator, Suno, last year over copyright infringement.
“These new agreements with Udio demonstrate our commitment to do what’s right by our artists and songwriters, whether that means embracing new technologies, developing new business models, diversifying revenue streams or beyond,” Universal CEO Lucian Grainge said.
Financial terms of the settlement weren’t disclosed.
Universal announced another AI deal on Thursday, saying it was teaming up with Stability AI to develop “next-generation professional music creation tools.”

Udio and Suno pioneered AI song generation technology, which can spit out new songs based on prompts typed into a chatbot-style text box. Users, who don’t need musical talent, can merely request a tune in the style of, for example, classic rock, 1980s synth-pop or West Coast rap.
Udio and Universal, which counts Taylor Swift, Olivia Rodrigo, Drake, and Kendrick Lamar among its artists, said the new AI subscription service will debut next year.
Udio CEO Andrew Sanchez said in a blog post that people will be able to use it to remix their favorite songs or mashup different tunes or song styles. Artists will be able to give permission for how their music can be used, he said.
However, “downloads from the platform will be unavailable,” he said.
AI songs made on Udio will be “controlled within a walled garden” as part of the transition to the new service, the two companies said in their joint announcement.
The move angered Udio’s users, according to posts on Reddit’s Udio forum, where they vented about feeling betrayed by the platform’s surprise move and complained that it limited what they could do with their music.

One user accused Universal of taking away “our democratic download freedoms.” Another said “Udio can never be trusted again.”
Many vowed to cancel their subscriptions for Udio, which has a free level as well as premium plans that come with more features.
The deal shows how the rise of AI song generation tools like Udio has disrupted the $20 billion music streaming industry. Record labels accuse the platforms of exploiting the recorded works of artists without compensating them.
The tools have fueled debate over AI’s role in music while raising fears about “AI slop”—automatically generated, low quality mass produced content—highlighted by the rise of fictitious bands passing for real artists.
In its lawsuit filed against Udio last year, Universal alleged that specific AI-generated songs made on Udio closely resembled Universal-owned classics like Frank Sinatra’s “My Way,” The Temptations’ “My Girl” and holiday favorites like “Rockin’ Around the Christmas Tree” and “Jingle Bell Rock.”
In the “My Girl” example, a written prompt on Udio that asked for “my tempting 1964 girl smokey sing hitsville soul pop” generated a song with a “very similar melody, the same chords, and very similar backing vocals” as the hit song co-written by Smokey Robinson and recorded by The Temptations in 1964, according to the lawsuit. A link to the AI-generated song on Udio now says “Track not found.”
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Tech
Battery-equipped kitchen stove makes it easy to switch from gas to electric
As batteries have gotten cheaper and more powerful, they have enabled the electrification of everything from vehicles to lawn equipment, power tools, and scooters. But electrifying homes has been a slower process. That’s because switching from gas appliances often requires ripping out drywall, running new wires, and upgrading the electrical box.
Now the startup Copper, founded by Sam Calisch SM ’14, Ph.D. ’19, has developed a battery-equipped kitchen range that can plug into a standard 120-volt wall outlet. The induction range features a lithium iron phosphate battery that charges when energy is cheapest and cleanest, then delivers power when you’re ready to cook.
“We’re making ‘going electric’ like an appliance swap instead of a construction project,” says Calisch. “If you have a gas stove today, there is almost certainly an outlet within reach because the stove has an oven light, clock, or electric igniters. That’s big if you’re in a single-family home, but in apartments it’s an existential factor. Rewiring a 100-unit apartment building is such an expensive proposition that basically no one’s doing it.”
Copper has shipped about 1,000 of its battery-powered ranges to date, often to developers and owners of large apartment complexes. The company also has an agreement with the New York City Housing Authority for at least 10,000 units.
Once installed, the ranges can contribute to a distributed, cleaner, and more resilient energy network. In fact, Copper recently piloted a program in California to offer cheap, clean power to the grid from its home batteries when it would otherwise need to fire up a gas-powered plant to meet spiking electricity demand.
“After these appliances are installed, they become a grid asset,” Calisch says. “We can manage the fleet of batteries to help provide firm power and help grids deliver more clean electricity. We use that revenue, in turn, to further drive down the cost of electrification.”
Finding a mission
Calisch has been working on climate technologies his entire career. It all started at the clean technology incubator Otherlab that was founded by Saul Griffith SM ’01, Ph.D. ’04.
“That’s where I caught the bug for technology and product development for climate impact,” Calisch says. “But I realized I needed to up my game, so I went to grad school in [MIT Professor] Neil Gershenfeld’s lab, the Center for Bits and Atoms. I got to dabble in software engineering, mechanical engineering, electrical engineering, mathematical modeling, all with the lens of building and iterating quickly.”
Calisch stayed at MIT for his Ph.D., where he worked on approaches in manufacturing that used fewer materials and less energy. After finishing his Ph.D. in 2019, Calisch helped start a nonprofit called Rewiring America focused on advocating for electrification. Through that work, he collaborated with U.S. Senate offices on the Inflation Reduction Act.
The cost of lithium-ion batteries has decreased by about 97% since their commercial debut in 1991. As more products have gone electric, the manufacturing process for everything from phones to drones, robots, and electric vehicles has converged around an electric tech stack of batteries, electric motors, power electronics, and chips. The countries that master the electric tech stack will be at a distinct manufacturing advantage.
Calisch started Copper to boost the supply chain for batteries while contributing to the electrification movement.
“Appliances can help deploy batteries, and batteries help deploy appliances,” Calisch says. “Appliances can also drive down the installed cost of batteries.”
The company is starting with the kitchen range because its peak power draw is among the highest in the home. Flattening that peak brings big benefits. Ranges are also meaningful: It’s where people gather around and cook each night. People take pride in their kitchen ranges more than, say, a water heater.
Copper’s 30-inch induction range heats up more quickly and reaches more precise temperatures than its gas counterpart. Installing it is as easy as swapping a fridge or dishwasher. Thanks to its 5-kilowatt-hour battery, the range even works when the power goes out.
“Batteries have become 10 times cheaper and are now both affordable and create tangible improvements in quality of life,” Calisch says. “It’s a new notion of climate impact that isn’t about turning down thermostats and suffering for the planet, it’s about adopting new technologies that are better.”
Scaling impact
Calisch says there’s no way for the U.S. to maintain resilient energy systems in the future without a lot of batteries. Because of power transmission and regulatory limitations, those batteries can’t all be located out on the grid.
“We see an analog to the internet,” Calisch says. “In order to deliver millions of times more information across the internet, we didn’t add millions of times more wires. We added local storage and caching across the network. That’s what increased throughput. We’re doing the same thing for the electric grid.”
This summer, Copper raised $28 million to scale its production to meet growing demand for its battery-equipped appliances. Copper is also working to license its technology to other appliance manufacturers to help speed the electric transition.
“These electric technologies have the potential to improve people’s lives and, as a byproduct, take us off of fossil fuels,” Calisch says. “We’re in the business of identifying points of friction for that transition. We are not an appliance company; we’re an energy company.”
Looking back, Calisch credits MIT with equipping him with the knowledge needed to run a technical business.
“My time at MIT gave me hands-on experience with a variety of engineering systems,” Calisch. “I can talk to our embedded engineering team or electrical engineering team or mechanical engineering team and understand what they’re saying. That’s been enormously useful for running a company.”
He adds, “I also developed an expansive view of infrastructure at MIT, which has been instrumental in launching Copper and thinking about the electrical grid not just as wires on the street, but all of the loads in our buildings. It’s about making homes not just consumers of electricity, but participants in this broader network.”
This story is republished courtesy of MIT News (web.mit.edu/newsoffice/), a popular site that covers news about MIT research, innovation and teaching.
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Battery-equipped kitchen stove makes it easy to switch from gas to electric (2025, October 30)
retrieved 30 October 2025
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part may be reproduced without the written permission. The content is provided for information purposes only.
Tech
A New Startup Wants to Edit Human Embryos
In 2018, Chinese scientist He Jiankui shocked the world when he revealed that he had created the first gene-edited babies. Using Crispr, he tweaked the genes of three human embryos in an attempt to make them immune to HIV and used the embryos to start pregnancies.
The backlash against He was immediate. Scientists said the technology was too new to be used for human reproduction and that the DNA change amounted to genetic enhancement. The Chinese government charged him with “illegal medical practices” and he served a three-year prison sentence.
Now, a New York-based startup called Manhattan Genomics is reviving the debate around gene-edited babies. Its stated goal is to end genetic disease and alleviate human suffering by fixing harmful mutations at the embryo stage. The company has announced a group of “scientific contributors” that includes a prominent in vitro fertilization doctor, a data scientist who worked for deextinction company Colossal Biosciences, and two reproductive biologists from a major primate research center. A scientist who pioneered a technique to make embryos using DNA from three people is also involved.
“I like to take on challenges when I see them,” says cofounder Cathy Tie, a former Thiel fellow who left college at 18 to start her first company, Ranomics, a genomics screening service. As Tie sees it, that challenge is making the idea of human embryo editing more acceptable in society.
The idea of editing human embryos is tantalizing because any changes made to the reproductive cells are heritable. Snip out a disease-causing mutation in an embryo and it would be deleted from future generations as well. But gene-editing technology also has the potential to cause unintended “off-target” effects. Edit the wrong gene by mistake and it could give rise to cancer, for instance. Those mistakes would also be passed down to any future children.
While newer forms of gene editing are more precise, there are still ethical issues to contend with. The prospect of being able to manipulate the DNA of a human embryo has raised fears of a new kind of eugenics, where parents with the means to do so could make “designer babies” with traits that they select.
Tie says the goal of Manhattan Genomics—originally called the Manhattan Project when the company first launched in August—is disease correction, not enhancement. Unlike the original Manhattan Project, a secretive US government program during World War II that produced the first nuclear weapons, Tie says her venture will operate openly and transparently. “We’re revolutionizing medicine, and this technology is definitely very powerful. That’s what I think is the commonality here with manipulating the nucleus of the atom and manipulating the nucleus of the cell,” she says.
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