Health
Why Older People May Not Need to Watch Blood Sugar So Closely
By now, Ora Larson recognizes what’s happening. “It feels like you’re shaking inside,” she said. “I’m speeded up. I’m anxious.” If someone asks whether she would like a salad for lunch, she doesn’t know how to respond.
She has had several such episodes this year, and they seem to be coming more frequently.
“She stares and gets a gray color and then she gets confused,” her daughter, Susan Larson, 61, said. “It’s really scary.”
Hypoglycemia occurs when levels of blood sugar, or glucose, fall too low; a reading below 70 milligrams per deciliter is an accepted definition. It can afflict anyone using glucose-lowering medications to control the condition.
But it occurs more frequently at advanced ages. “If you’ve been a diabetic for years, it’s likely you’ve experienced an episode,” said Dr. Sei Lee, a geriatrician at the University of California, San Francisco, who researches diabetes in older adults.
The elder Ms. Larson, 85, has had Type 2 diabetes for decades. Now her endocrinologist and her primary care doctor worry that hypoglycemia may cause falls, broken bones, heart arrhythmias and cognitive damage.
Both have advised her to let her hemoglobin A1c, a measure of average blood glucose over several months, rise past 7 percent. “They say, ‘Don’t worry too much about the highs — we want to prevent the lows,’” the younger Ms. Larson said.
But her mother has spent 35 years working to maintain an A1c below 7 percent — a common recommendation, the goal people sing and dance about in pharma commercials.
She faithfully injects her prescribed drug, Victoza, about three times a week and watches her diet. She’s the oldest member of the Aqua for Arthritis class at a local pool in St. Paul, Minn.
So when her doctors recommended a higher A1c, she resisted. “I think it’s a bunch of hooey,” she said. “It didn’t make sense to me.”
“She got a lot of encouragement and recognition from her physicians for controlling her diabetes, staying on top of it,” her daughter explained. “They always praised her ‘tight control.’”
“For someone who’s been so compliant all these years, it’s like they changed the rules.”
In fact, they have.
More than a decade ago, the American Geriatrics Society called for a hemoglobin A1c of 7.5 to 8 for most older adults with diabetes, and 8 to 9 percent for those contending with multiple chronic illnesses and limited life expectancy. (The elder Ms. Larson has multiple sclerosis and hypertension.)
Other medical societies and advocacy groups, including the American Diabetes Association and the Endocrine Society, have also revised their guidelines upward for older patients.
Relaxing aggressive treatment can involve stopping a drug, lowering a dose or switching to another medication — an approach called de-intensification.
The advent of effective new diabetes drugs — GLP-1 receptor agonists (like Ozempic) and SGLT2 inhibitors (like Jardiance) — has further altered the landscape. Some patients can substitute these safer medications for risky older ones.
But the new drugs can also complicate decisions, because not all older patients can switch — and for those who can, insurance companies may balk at the new medications’ high price tags and deny coverage.
So de-intensification is proceeding, but too gradually.
A 2021 study of Medicare beneficiaries with diabetes, for instance, looked at patients who had gone to an emergency room or been hospitalized because of hypoglycemia. Fewer than half had their medication regimens de-intensified within 100 days.
“Nursing-home residents are the ones that get into trouble,” said Dr. Joseph Ouslander, a geriatrician at Florida Atlantic University and the editor in chief of The Journal of the American Geriatrics Society.
Another 2021 study, of Ontario nursing homes, found that over half of residents taking drugs for Type 2 diabetes had A1c levels below 7 percent. Those with the greatest cognitive impairment were being treated most aggressively.
Dr. Ouslander has calculated, based on a national study, that roughly 40,000 emergency room visits annually resulted from overtreatment of diabetes in older adults from 2007 to 2011. He thinks the numbers are likely to be much higher now.
A brief primer: Diabetes can cause such grievous complications — heart attacks, stroke, vision and hearing loss, chronic kidney disease, amputations — that so-called strict glycemic control makes sense in young adulthood and middle age.
But tight control, like every medical treatment, involves a period of time before paying off in improved health. With diabetes, it’s a long time, probably eight to 10 years.
Older people already contending with a variety of health problems may not live long enough to benefit from tight control any longer. “It was really important when you were 50,” said Dr. Lee. “Now, it’s less important.”
Older diabetics don’t always welcome this news. “I thought they’d be happy,” Dr. Lee said, but they push back. “It’s almost like I’m trying to take something away from them,” he added.
The risk that tight control will also set off hypoglycemia increases as patients age.
It can make people sweaty, panicky, fatigued. When hypoglycemia is severe, “people can lose consciousness,” said Dr. Scott Pilla, an internist and diabetes researcher at Johns Hopkins. “They can become confused. If they’re driving, they could have an accident.”
Even milder hypoglycemic events “can become a quality-of-life issue if they’re happening frequently,” causing anxiety in patients and possibly leading them to limit their activities, he added.
Experts point to two kinds of older drugs particularly implicated in hypoglycemia: insulin and sulfonylureas like glyburide, glipizide and glimepiride.
For people with Type 1 diabetes, whose bodies cannot produce insulin, injections of the hormone remain essential. But the medication is “widely recognized as a dangerous drug” because of its hypoglycemia risk and should be carefully monitored, Dr. Lee said.
The sulfonylureas, he added, “are becoming less and less used” because, while less risky than insulin, they also cause hypoglycemia.
The great majority of older adults with diabetes have Type 2, which gives them more options. They can supplement the commonly prescribed drug metformin with the newer GLP-1 and SGLT2 drugs, which also have cardiac and kidney benefits. If necessary, they can add insulin to their regimens.
Among the new drugs’ more popular consequences, however, is weight loss.
“For older people, if they’re frail and not very active, we don’t want them losing weight,” Dr. Pilla pointed out. And both metformin and the GLP-1 and SGLT-2 medications can have gastrointestinal or genitourinary side effects.
For 15 years, Dan Marsh, 69, an accountant in Media, Pa., has treated his Type 2 diabetes by injecting two forms of insulin daily. When he takes too much, he said, he wakes up at night with “the damn lows,” and needs to eat and take glucose tablets.
Yet his A1c remains high, and last year doctors amputated part of a toe. Because he takes many other medications for a variety of conditions, he and his doctor have decided not to try different diabetes drugs.
“I know there’s other stuff, but we haven’t gone that way,” Mr. Marsh said.
With all the new options, including continuous glucose monitors, “figuring out the optimal treatment is becoming more and more difficult,” Dr. Pilla said.
Bottom line, though, “older people overestimate the benefit of blood-sugar lowering and underestimate the risk of their medications,” he said. Often, their doctors haven’t explained how the trade-offs shift with older age and accumulating health problems.
Ora Larson, who carries chewable glucose tablets with her in case of hypoglycemia (fruit juice and candy bars are also popular antidotes), intends to talk over her diabetes treatment with her doctors.
It’s a good idea. “The biggest risk factor for severe hypoglycemia is having had hypoglycemia before,” Dr. Lee said.
“If you have one episode, it should be thought of as a warning signal. It’s incumbent on your doctor to figure out, Why did this happen? What can we do so your blood sugar doesn’t go dangerously low?”
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Feeling lonely may take a toll on older adults’ memory — but it may not speed up cognitive decline, according to a new study.
Researchers from Colombia, Spain and Sweden analyzed data from more than 10,000 adults ages 65 to 94 across 12 European countries and found those who reported higher levels of loneliness did worse on memory tests at the start of the study, according to research published this month in the journal Aging & Mental Health.
Over a seven-year period, however, memory decline occurred at a similar rate regardless of how lonely participants felt.
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“The finding that loneliness significantly impacted memory, but not the speed of decline in memory over time was a surprising outcome,” lead author Dr. Luis Carlos Venegas-Sanabria of the School of Medicine and Health Sciences at the Universidad del Rosario said in a statement.
Loneliness may be linked to memory performance in older adults, a new study suggests. (iStock)
“It suggests that loneliness may play a more prominent role in the initial state of memory than in its progressive decline,” Venegas-Sanabria said, adding that the findings highlight the importance of addressing loneliness as a factor in cognitive performance.
The findings add to debate about whether loneliness contributes to dementia risk. While loneliness and social isolation are often considered risk factors for cognitive decline, research results have been mixed.
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The study looked at data from the long-running Survey of Health, Ageing and Retirement in Europe (SHARE), which tracked 10,217 older adults between 2012 and 2019. Participants were asked to recall words immediately and after a delay to measure memory performance.
Social isolation and loneliness could play a surprising role in cognitive health among seniors. (iStock)
Loneliness was assessed using three questions about how often participants felt isolated, left out or lacking companionship.
About 8% of participants reported high levels of loneliness at the outset. That group tended to be older, more likely to be female and more likely to have conditions such as depression.
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Researchers found that those with higher loneliness had lower scores on both immediate and delayed memory tests at baseline. Still, all groups — regardless of loneliness level — experienced similar declines in memory over time.
The results suggest loneliness may not directly accelerate the progression of memory loss, though it remains linked to poorer cognitive performance overall.
Researchers look at a brain scan at the National Institutes of Health in Bethesda, Maryland. (Saul Loeb/AFP/Getty Images)
Experts warn, however, that the findings should not be interpreted to mean loneliness is harmless.
“The finding that lonely older adults start with worse memory but don’t decline faster is actually the most interesting part of the paper, and I think it’s easy to misread,” said Jordan Weiss, Ph.D., a scientific advisor and aging expert at Assisted Living Magazine and a professor at NYU Grossman School of Medicine.
“It likely means loneliness does its damage earlier in life, well before people show up in a study like this at 65-plus,” Weiss told Fox News Digital.
By older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold, an aging expert says. (iStock)
He suggested that by older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold.
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“By the time you’re measuring someone in their late 60s, decades of social connection patterns are already baked in,” he said.
Weiss, who was not involved in the research, added that loneliness may coincide with other health conditions, and noted that participants who felt more isolated also had higher rates of depression, high-blood pressure and diabetes. The link, he said, may reflect a cluster of health risks rather than a direct cause.
“While they can go hand-in-hand, it’s not clear that loneliness contributes to dementia,” a psychotherapist says. (iStock)
Amy Morin, a Florida-based psychotherapist and author, said the findings reflect a broader pattern in research on loneliness and brain health, and that the relationship may be more complex than it appears.
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“The evidence shows there’s a link between loneliness and cognitive decline but there’s no direct evidence of a cause and effect relationship,” she said. “So while they can go hand-in-hand, it’s not clear that loneliness contributes to dementia.”
Morin added that loneliness, which can fluctuate, may not be the root of the problem, but rather a symptom of other underlying mental or physical health issues.
Researchers suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging. (iStock)
She said staying socially and mentally engaged is crucial for overall brain health.
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“It’s important to be proactive about social activities,” Morin said. “Joining a book club, having coffee with a friend, or attending faith-based services can be a powerful way to maintain connections in older age.”
The researchers also suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging.
Fox News Digital reached out to the researchers for comment.
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Research continues to uncover new details on how fasting may help extend life.
A new study published in the journal Nature Communications investigated how intermittent fasting can boost longevity in small worms often used in aging research.
Researchers from the University of Texas Southwestern Medical Center in Dallas compared worms that were fed normally to those that underwent a 24-hour fast in early adulthood and were then fed again, according to a press release.
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The scientists measured a variety of factors, including stored fat, gene activity related to fat metabolism and lifespan.
The results showed that the life-boosting benefit did not depend on the fasting itself but on the body’s behavior after eating again.
Experts say sustainability is key when choosing a long-term weight-loss strategy. (iStock)
Study lead Peter Douglas, associate professor of molecular biology and a member of the Hamon Center for Regenerative Science and Medicine at UT Southwestern, suggested that these discoveries “shift the focus toward a neglected side of the metabolic coin – the re-feeding phase.”
“Our data suggest that the health-promoting effects of intermittent fasting are not merely a product of the fast itself, but are dependent on how the metabolic machinery recalibrates during the subsequent transition back to a fed state,” he said.
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“Our findings bridge a gap between lipid metabolism and aging research,” he added. “By targeting aging, the single greatest risk factor for human disease, we move beyond treating isolated conditions toward a preventive model of medicine that enhances quality of life for all individuals.”
Lauri Wright, director of nutrition programs at the University of South Florida’s College of Public Health, called this a “high-quality” study that adds an “important nuance to how we think about fasting and longevity.”
Intermittent fasting typically involves limiting meals to an eight-hour daily window or fasting every other day. (iStock)
The benefits of the refeeding phase after fasting were “especially interesting,” Wright, who was not involved in the study, told Fox News Digital.
“The researchers showed that longevity was linked to the body’s ability to turn off fat breakdown after fasting, allowing cells to restore energy balance,” she reiterated.
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“From a scientific standpoint, that’s a meaningful shift because it suggests fasting is not just about burning fat, but about metabolic flexibility.”
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Fasting may support longevity through triggering metabolic switching, enhancing cellular repair and stress resistance and improving markers like insulin sensitivity, research shows.
Limitations and cautions
Although this study provides “important insight” on the power of refeeding, Wright noted that the findings should be approached with caution, as the study was done on worms and cannot always be translated to humans.
“Additionally, it explains how a process might work in a controlled lab condition rather than real-world eating behaviors,” she added as a limitation. “Finally, the study is short-term and doesn’t give us the long-term translation on lifespan outcomes.”
The review found intermittent fasting was barely more effective than doing nothing, according to the study authors. (iStock)
Wright cautioned that fasting is “not a magic solution for longevity, and how you eat overall matters more than when you eat.”
“I advise, first and foremost, to focus on diet quality, including a variety of fruits and vegetables, healthy fats and minimally processed foods,” she said.
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For those who are considering fasting, it’s better to stick with a moderate plan — like a 12- to 14-hour overnight fast — rather than going to extremes, Wright said. After fasting, she recommends focusing on well-balanced meals.
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Several groups of people should be cautioned against fasting, according to Wright, including those with diabetes who are on insulin or hypoglycemic medications, those who are pregnant or breastfeeding, anyone with a history of eating disorders and older adults at risk of malnutrition.
Anyone considering intermittent fasting should consult with a doctor before starting.
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