Physiological and Diagnostic Challenges of Addiction in Aging Adults

This podcast episode, hosted by Dr. Donnisee Snipes, delves into the unique physiological and diagnostic challenges associated with addiction in older adults. It emphasizes that 'cellular age' rather than chronological age is the primary determinant of how the body responds to medications and substances, with chronic stress and substance misuse accelerating biological aging. Key physiological changes discussed include altered body composition (muscle loss, fat gain), reduced liver and kidney clearance, and changes in drug half-life, leading to increased drug concentration and toxicity risk, especially for fat-soluble drugs like benzodiazepines and opioids. The episode also highlights the critical role of nutrient deficiencies, which impair albumin production and liver enzyme function, further compromising drug metabolism and excretion. Furthermore, it details how multiple medications often compete for the same cytochrome P450 enzymes, exacerbating drug interactions and reducing the body's detoxification capacity.

The discussion extends to various disorders and conditions that impair drug clearance or alter drug distribution, such as heart failure, kidney/liver disease, frailty, and cognitive impairment. Frailty reduces 'homeostatic reserve,' making older adults less able to compensate for drug effects like reduced heart rate or blood pressure, increasing risks like falls. Cognitive issues, vision problems, and increased blood-brain barrier permeability also contribute to medication non-compliance, neuroinflammation, and reduced white matter integrity, which in turn affects memory, executive function, and emotional regulation. These brain changes, often exacerbated by chronic stress and substance use, can mimic symptoms of depression, anxiety, or dementia, complicating diagnosis.

Dr. Snipes also addresses the heightened susceptibility of older adults to addictive behaviors, linking it to chronic stress, cognitive slowing, impulsivity, and a desire to alleviate depression or apathy. The episode critically examines the limitations of standard DSM-5 criteria for diagnosing substance use disorders in older adults, as factors like retirement, social isolation, and reduced engagement in physically dangerous activities can mask problematic use. It stresses the importance of looking beyond traditional markers and considering the impact on overall health and quality of life.

Practical insights and recommendations for clinicians and caregivers include encouraging patients to consult doctors about medication adjustments due to weight changes, diet, or over-the-counter supplements. It advises against benzodiazepine and opioid use in older adults unless absolutely necessary due to severe risks. For prevention and intervention, the podcast recommends strategies to rebalance the autonomic nervous system, promote anti-inflammatory diets, ensure good oral health, provide supportive solutions for cognitive challenges, and destigmatize age-related cognitive slowing. Ultimately, the episode underscores the need for a holistic, informed, and compassionate approach to identifying and treating addiction in the aging population, recognizing the complex interplay of physiological, psychological, and social factors.

what we're talking about is the a cellular age of the body, not necessarily the chronological age.

Chronic stress and substance misuse accelerate biological aging making the body physiologically phys physiologically older than the chronological age.

As the body ages, drugs stay longer and increase in concentration.

Many drugs compete for the same liver enzymes, reducing the body's ability to break down and excrete the medication.

When you've got multiple drugs that are being broken down by the same enzyme, that enzyme gets spread too thin.

Lack of albumin means the drugs and the toxins can't get moved throughout the body.

People who are frail have reduced homeostatic reserve. This means the body just can't compensate for drug effects like reduced heart rate or reduced blood pressure.

As we age cellularly, we start to see cognitive slowing. We may see in people with cognitive slowing drug non-compliance.

for every minute that you're stressed, you're increasing the amount of damage in your brain because you're increasing inflammation.

Addictions tend to at least temporarily make somebody feel better. It helps them reduce stress.

Gambling and impulsivity severity connected negatively correlated with white matter integrity.

standard DSM5 criteria for substance use disorders may fail to detect problematic use in older adults.