Invisible Stress, Visible Damage: How Modern Life Raised Heart Disease Risk for Women
Invisible Stress, Visible Damage:
How Modern Life Raised Heart Disease Risk for Women
by James E. Porter
The idea that heart attacks in American women were “virtually unheard of” before they started entering the workforce in 1970s isn’t quite accurate—but it felt that way for a long time, and that perception tells us something important about stress, culture, and how we define risk.
For decades, cardiovascular disease was framed as a “man’s problem.” Early research focused overwhelmingly on men, particularly middle-aged executives under pressure. Women were underdiagnosed, understudied, and often misdiagnosed when symptoms appeared. It wasn’t that women weren’t having heart attacks—it’s that medicine wasn’t looking for them in the same way. Symptoms in women also tend to present differently, often without the classic crushing chest pain, which further obscured the reality.
Then something shifted.
Beginning in the 1970s and accelerating through the 1980s, large numbers of women entered the workforce. This was a profound cultural transformation. But it didn’t come with a corresponding reduction in expectations at home. Instead, many women found themselves in what researchers later called the “double burden”—full-time work combined with primary responsibility for childcare, household management, and emotional labor.
From a stress physiology perspective, this matters.
Chronic stress activates the body’s fight-or-flight response, a system first described by Walter B. Cannon. While this response is lifesaving in short bursts, it becomes harmful when activated continuously. Elevated cortisol, increased blood pressure, systemic inflammation—all of these are risk factors for cardiovascular disease. Over time, the body pays a price for being “on” all the time.
As women’s roles expanded, so did their exposure to chronic, cumulative stress. Deadlines at work. Expectations at home. Less time for recovery. Less time for sleep. Less time for self-care. And importantly, less societal permission to step back.
At the same time, behaviors linked to heart disease—such as smoking, poor diet, and reduced physical activity—also rose among women during this period, partly mirroring patterns long seen in men. The combination of physiological stress and behavioral risk created a perfect storm.
Meanwhile, across the globe, Japan was grappling with its own extreme version of work-related stress. The term Karoshi literally means “death from overwork.” First recognized in the late 20th century, Karoshi cases often involved sudden cardiac events—heart attacks or strokes—in otherwise healthy individuals who had been working punishing hours with little rest.
The cultural context in Japan is different, but the underlying biology is the same. Chronic stress, sleep deprivation, and relentless performance pressure push the cardiovascular system beyond its limits. Whether it’s a Tokyo salaryman working 80-hour weeks or an American working mother juggling multiple roles, the body doesn’t distinguish between types of stress—it simply responds.
What ties these stories together is not gender or geography, but load.
When the demands placed on a person consistently exceed their capacity to recover, the stress response becomes chronic. And chronic stress is not just a psychological experience—it is a biological condition with measurable, cumulative effects.
The real lesson here isn’t that women entering the workforce caused heart disease. It’s that invisible stress became visible.
As roles changed, so did exposure to sustained pressure. And as awareness grew, so did diagnosis. Today, we understand that heart disease is the leading cause of death for women in the United States—not because it suddenly appeared, but because we finally started paying attention.
The takeaway is both sobering and hopeful.
Stress is not just something we feel—it’s something our bodies keep score of. And whether we’re talking about the rise of women in the workforce or the phenomenon of Karoshi, the message is clear: without recovery, resilience breaks down.
The challenge for modern life isn’t eliminating stress—that’s impossible. It’s learning how to interrupt it, balance it, and recover from it before the body starts making decisions for us.
Erica Tuminski
Author