Almost everyone has that one person who seems to drain the life out of them—an unpredictable boss, a constantly critical parent, or a friend who turns every conversation into a crisis. You may walk away from these interactions feeling tense, exhausted, or even a little older than you were an hour ago.

Emerging research, including a study highlighted by The Washington Post in 2026, suggests this feeling might not be just in your head. Difficult people—sometimes called “hasslers” in the research—appear to contribute to chronic stress that can be measured in your body as accelerated biological aging through epigenetic markers.

In this guide, we’ll unpack what the science is actually saying (without alarmism), why “hasslers” can affect your health, and—most importantly—what you can realistically do to protect your body and mind while still living in the real world where difficult people exist.

Silhouette of a person sitting by a window, appearing stressed or deep in thought
Repeated exposure to stressful relationships may contribute to chronic stress and faster biological aging.

How Difficult People Might Influence How Fast You Age

The new research highlighted by The Washington Post examined how frequent exposure to “difficult” or high-conflict people relates to biological aging markers—specifically, epigenetic biomarkers. These markers reflect changes in how your genes are expressed (turned on or off), not changes in your DNA sequence itself.

Researchers found that people who reported more ongoing interpersonal stress—arguments, criticism, feeling hassled or undermined—also tended to show signs of being biologically older than their calendar age would suggest.

Still, this growing body of evidence fits into a larger pattern: chronic stress—especially social and emotional stress—is one of the most powerful drivers of poor long-term health outcomes, including cardiovascular disease, immune changes, and mental health challenges.


What Are Epigenetic Biomarkers of Aging, in Plain English?

You can think of your DNA as a library of books (your genes). Epigenetics is like the system of bookmarks, highlights, and sticky notes that tell your body which “books” to read and when.

Epigenetic aging clocks measure patterns of chemical tags (often DNA methylation) attached to your DNA. These patterns tend to change in somewhat predictable ways as we age, which allows scientists to estimate your biological age—how “old” your body appears—versus your actual age in years.

  • Biological age younger than your actual age: often linked with better health outcomes and lower disease risk.
  • Biological age older than your actual age: associated in studies with higher risk of chronic disease and earlier mortality.

“Epigenetic clocks capture a dimension of aging that is highly sensitive to environmental exposures, including psychosocial stressors.”

— Summary of findings from epigenetic aging research in psychosocial stress studies

The recent study on “hasslers” adds to this picture by suggesting that persistent interpersonal conflicts and difficult relationships may be one of those environmental stressors nudging your biological age upward.


How “Hasslers” Trigger Your Stress Response

When you’re around someone who is unpredictable, critical, or combative, your body doesn’t distinguish that very well from other threats. It tends to respond with the classic stress response:

  1. Your brain perceives threat or conflict.
  2. Stress hormones like cortisol and adrenaline increase.
  3. Heart rate and blood pressure rise; muscles tense.
  4. Digestion and restorative processes briefly take a back seat.

None of this is inherently harmful in short bursts. The problem emerges when you experience these surges day after day, month after month, especially from people you can’t easily avoid (for example, a boss or close family member).

Woman sitting at a desk, looking overwhelmed while a colleague speaks to her
Workplaces are a common setting where ongoing conflicts and “hasslers” can fuel chronic stress.

Over time, chronically elevated stress has been linked to:

  • Worse cardiovascular health
  • Sleep disturbances
  • Weakened immune function
  • Higher risk of anxiety and depression
  • Changes in epigenetic markers associated with aging

A Real-World Scenario: When One Person Shapes Your Whole Day

Consider “Maya,” a composite case based on several patients described in clinical and coaching settings:

Maya is in her early 40s, works in a mid-level management role, and generally enjoys her job. But her direct supervisor frequently belittles her in meetings, sends late-night emails demanding changes, and criticizes minor mistakes in front of others.

Over several years, Maya noticed:

  • Her sleep grew more fragmented—waking at 3 a.m. replaying conversations.
  • She developed frequent tension headaches and digestive upset.
  • Her primary care doctor noted rising blood pressure and recommended stress reduction.

Maya didn’t suddenly become “unhealthy”—her environment changed. While we can’t say exactly how her epigenetic markers shifted without specific tests, her story reflects the pattern researchers see: ongoing exposure to a difficult person slowly reshapes health trajectories.


Before & After: What Changes When You Learn to Set Boundaries

The encouraging part: while we can’t erase all difficult people, we can change how much access they have to our nervous system. Here’s a simplified “before and after” comparison when someone develops healthier boundaries and coping skills.

Side-by-side concept of a stressed person versus a calmer person practicing self-care
Learning to manage difficult relationships can shift your body from constant stress toward recovery and resilience.
Before Boundaries After Boundaries & Coping Skills
Rumination for hours after conflicts Specific “shutoff” routines that help you mentally log the day and sleep
Saying “yes” to every request out of fear or guilt Using scripts like “I’m not able to take that on right now” without lengthy justification
Constant hypervigilance around the person Planned exposure—limiting contact and scheduling recovery time
Feeling trapped and powerless Clear sense of options (HR, transfer, distancing, therapy, new job search)

Evidence-Based Strategies to Protect Your Health from Difficult People

You don’t need to cut every challenging person out of your life to support healthy aging. The key is to reduce chronic stress load and improve how your body processes stress when it does arise.

1. Set Clear, Compassionate Boundaries

Boundaries aren’t punishments; they’re guidelines for what you can and cannot do while still staying mentally and physically well.

  • Limit time exposure: Shorten calls, schedule shorter meetings, or choose group settings instead of one-on-one when possible.
  • Protect high-vulnerability times: Avoid difficult discussions late at night or right before sleep when stress can hit harder.
  • Use simple scripts:
    • “I’m not available to talk about this right now.”
    • “Let’s stick to the topic we agreed on.”
    • “I’m going to step away from this conversation if it becomes disrespectful.”

2. Build a “Recovery Routine” After Tough Interactions

Your goal is to actively help your nervous system move from fight-or-flight back toward rest-and-digest.

  1. Move your body: A 5–10 minute walk, stretching, or a few flights of stairs can help metabolize stress hormones.
  2. Regulate breathing: Try inhaling for 4 seconds, exhaling for 6–8 seconds, for 2–5 minutes.
  3. Label your experience: Briefly jot down what happened and how it made you feel. Naming emotions can reduce their intensity.
  4. Shift attention: Engage in a neutral or positive task (tidying, listening to calming music, focusing on a simple work task).

3. Strengthen Supportive Relationships

Positive social connections are one of the strongest protective factors against stress-related aging. In some studies, high-quality relationships buffer the effects of chronic stress on health.

  • Invest intentionally in people who leave you feeling calmer, seen, and respected.
  • Share—not to vent endlessly, but to feel less alone and brainstorm options.
  • Consider peer support groups, either in person or online, for workplace stress, caregiving, or family conflict.
Group of coworkers or friends smiling and talking around a table
Supportive relationships can buffer the health impact of stress from more difficult people in your life.

4. Address the Bigger Picture of Stress

Difficult people may be one major contributor to stress, but they rarely exist in a vacuum. Improving other pillars of health can increase your resilience:

  • Sleep: Aim for 7–9 hours of consistent sleep when possible. Chronic sleep loss amplifies stress responses.
  • Physical activity: Regular movement is strongly associated with healthier epigenetic aging patterns.
  • Nutrition: A diet rich in whole foods, fiber, and healthy fats can support brain and hormone health.
  • Mental health care: Therapy or counseling can help unpack patterns, past trauma, and build new skills.

5. When Necessary, Plan an Exit Strategy

Sometimes the healthiest option isn’t better coping—it’s less contact. This may mean:

  • Seeking a transfer or new role if a workplace is persistently toxic.
  • Gradually reducing contact with chronically harmful individuals.
  • In extreme cases, working with professionals (legal, HR, mental health) to create a safe plan to leave abusive or high-risk situations.

Your nervous system doesn’t owe anyone unlimited access. Protecting your long-term health sometimes means making hard choices about who gets to be close to you.


Common Obstacles (and How to Work Through Them)

“I Feel Guilty Setting Boundaries”

Guilt often shows up when we start doing something new, not necessarily when we’re doing something wrong. Especially if you were raised to prioritize others’ comfort over your own, boundaries can feel selfish even when they’re healthy.

Try reframing: “I’m not abandoning this person; I’m choosing a way of relating that doesn’t destroy my health.”

“But I Can’t Avoid This Person (Boss, Co-parent, Family)”

In these more constrained situations, focus on:

  • Micro-boundaries: How you respond, what topics you engage in, and how much emotional energy you invest.
  • Process support: HR, mediators, or family therapists who can help structure interactions.
  • Internal boundaries: Reminding yourself that their behavior reflects their patterns, not your worth.

“I’m Worried the Damage Is Already Done”

Research on epigenetics is increasingly suggesting that many changes are dynamic, not fixed. While we can’t promise specific reversals, there is evidence that lifestyle shifts—stress reduction, improved sleep, exercise, therapy—are associated with more favorable biological aging markers.

In other words: it’s almost never “too late” to start protecting your health, even if you’ve lived with stress for a long time.


What the Broader Science Says

While the 2026 coverage focused on “hasslers” and epigenetic aging, it builds on decades of research connecting social stress and health:

  • Caregiving and chronic stress: Long-term caregivers under high stress have shown accelerated biological aging markers and higher disease risk in multiple studies.
  • Workplace stress: High job strain and low control are linked with increased cardiovascular risk and earlier mortality.
  • Relationship quality: Marital conflict and low social support are associated with increased inflammatory markers and poorer health outcomes.

These findings don’t mean you must avoid all stress (which is impossible), but they do underline that chronic, unmanaged stress—especially from close relationships—matters for long-term health and aging.

For more on this topic, see:


A Simple Checklist for Protecting Yourself from “Hassler” Stress

You don’t need to overhaul your life overnight. Start by choosing one or two of these steps this week:

  • Identify the top 1–2 relationships that leave you most consistently drained.
  • Decide one small boundary you can set in each (“no calls after 9 p.m.”, “no work texts on weekends”).
  • Schedule short recovery time after known stressful interactions.
  • Prioritize one supportive connection (coffee with a friend, a call with a sibling).
  • Add 5–10 minutes of movement to at least three days this week.
  • Experiment with a 2–5 minute breathing practice after stress spikes.
Person journaling with a cup of tea, appearing calm and reflective
Small daily practices—like reflection, breathing, and movement—can help your body recover from ongoing social stress.

You Deserve Relationships That Don’t Wear You Down

Difficult people are a part of life, but feeling constantly worn down by them doesn’t have to be. The emerging science around “hasslers,” chronic stress, and epigenetic aging is not a sentence—it’s information you can use to make kinder, more protective choices for yourself.

Your body is listening to the quality of your relationships. Each step you take—setting one boundary, carving out recovery time, investing in supportive people, seeking professional help when needed—is a way of telling your nervous system, “You are worth protecting.”

If one particular relationship is on your mind right now, consider this your invitation to:

  1. Write down what’s hardest about it.
  2. Choose one small boundary or change you can try this week.
  3. Plan how you’ll take care of yourself after the next interaction.

You can’t control who shows up in your life, but you can shape how much of your energy—and potentially your long-term health—they get to claim.