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Food insecurity among older adults is often framed as a crisis of quantity: not enough money, not enough food. But it can also manifest in ways that are far harder to spot. An older adult can be eating regularly — even eating enough by volume — and still be significantly undernourished.
In this milestone 50th episode of ComForConnections, Dr. Joan Salge Blake, Clinical Professor of Nutrition at Boston University and host of the Spot On! podcast, explains the mechanics behind food insecurity, what it costs the body over time, and what can be done about it.
One of the most important things Dr. Salge Blake covers in the episode is something that surprises a lot of people: as we age, caloric needs go down, but nutrient needs stay the same or increase. That combination creates a narrow margin for error.
An older adult eating smaller portions, whether by choice, habit, or reduced appetite, has less room to cover their nutritional bases with each meal. If those smaller meals aren’t particularly nutrient-dense, the shortfall accumulates over time.
Protein is where this plays out most consequentially. Older adults need more protein per pound of body weight than younger adults, but appetite suppression, dental issues, and the cost of protein-rich foods can all push intake in the wrong direction. When protein is consistently inadequate, the body begins drawing on muscle.
Muscle loss in older adults isn’t just a cosmetic issue. It affects balance, mobility, and the ability to recover from illness or surgery. For example, a senior who experiences a fall may have been losing muscle mass for months.
Bone health follows a similar pattern. Calcium and vitamin D work together to maintain bone density, and both tend to fall short in older adults. Vitamin D, in particular, is difficult to get from food alone and is less efficiently synthesized from sunlight as we age. Without adequate vitamin D, calcium absorption suffers even when intake looks fine on paper.
The clinical consequences are well-documented: lower bone density, higher fracture risk, longer recovery times. But for families and caregivers, the more immediate concern is that these deficiencies develop gradually. By the time they’re apparent, the depletion has usually been building for a long time.
Dr. Salge Blake is careful to note that supplements can help fill specific gaps, but they work best alongside a diet that’s already doing most of the heavy lifting. A supplement doesn’t replicate the full nutritional value of food, and it doesn’t address the broader pattern of inadequate intake.
For seniors managing on fixed incomes, nutritional shortfalls are often compounded by financial ones. Dr. Salge Blake points to research showing that approximately 12.6 million older adults in the United States experience food insecurity, and that seniors with food insecurity are significantly more likely to be managing chronic conditions like diabetes, heart disease, and hypertension. Poor nutrition increases the risk of developing these conditions, and makes them harder to control.
What makes this particularly difficult in a care context is that seniors often don’t self-report. The reasons are layered: pride, shame, not wanting to worry family, not wanting to appear unable to manage independently. A senior receiving in-home care may cut their grocery budget before they’d cut anything else, and a caregiver who isn’t specifically looking for the signs may not notice for weeks.
Those signs include:
None of these are conclusive on their own, but together they form a pattern worth investigating.
Professional caregivers are often better positioned to notice nutritional concerns than family members — not because they know the person better, but because they’re present more consistently and with less emotional charge. A family member may be reluctant to raise the issue for fear of causing conflict or implying a parent can’t manage. A caregiver can observe, document, and flag concerns through proper channels without that same burden.
Dr. Salge Blake also points to community resources that many families don’t know to look for:
These are tools that can and should be employed proactively. Connecting a senior to them early can make a meaningful difference.
The broader point she returns to throughout the episode is this: food is medicine, and it’s medicine that works best when it’s consistent, varied, and adequate in the nutrients that matter most. For older adults, “eating something” and “eating well” are not the same thing — and the people who care for them are often the first ones in a position to do something about it.
Listen to the full episode of ComForConnections featuring Dr. Joan Salge Blake.
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