Health
The real reason for nail-biting and other ‘bad habits,’ according to psychologists
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Nail-biting, procrastination and avoidance are often framed as bad habits we can’t control, but a new psychology book argues that they’re more like survival strategies that may have once protected us.
In “Controlled Explosions in Mental Health,” clinical psychologist Dr. Charlie Heriot-Maitland examined why people stick with bad habits that seem to work against their own best interest.
Drawing on years of clinical research and therapeutic practice, the expert reveals how the brain prioritizes predictability and safety over comfort and happiness.
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“Our brain is a survival machine,” he told Fox News Digital. “It is programmed not to optimize our happiness and well-being, but to keep us alive.”
For much of human history, being caught off-guard could be fatal, research shows. “The brain prefers predictable pain over unpredictable threat,” Heriot-Maitland said. “It does not like surprises.”
Experts say the brain prioritizes predictability and safety over happiness, preferring controlled, familiar discomfort to unpredictable risk. (iStock)
When faced with uncertainty, the brain may opt for smaller, self-sabotaging behaviors rather than risking larger, unpredictable ones.
The book argues that “the brain uses these small harms as a protective dose to prevent further harms.” Procrastination, for example, may create stress and frustration, but it can also delay exposure to the higher-stakes fear of failure or judgment.
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“The central argument is that behaviors we label as ‘self‑sabotaging’ could actually be attempts by the brain to control discomfort,” Thea Gallagher, a psychologist and wellness programs director at NYU Langone Health, told Fox News Digital.
In modern life, threats are often more emotional than physical. Rejection, shame, anxiety and loss of control can activate the same survival systems as a physical threat, experts say.
What looks like self-sabotage is often a way to delay or soften exposure to feared outcomes such as failure, judgment or rejection, an expert said. (iStock)
“Our brains have evolved to favor perceiving threat, even when there isn’t one, in order to elicit a protective response in us,” Heriot-Maitland said.
Self-criticism, avoidance and actions like nail-biting can function as attempts to manage the “dangers.”
Potential limitations
Gallagher noted that the book leans on clinical insight rather than empirical research.
“That doesn’t make it wrong, but it means the claims are more interpretive than scientific,” she said, noting that more data is needed to determine what is happening on a “mechanistic level.”
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Gallagher also emphasized that external factors, such as ADHD, trauma, chronic stress or socioeconomic pressures, can shape these behaviors in ways that aren’t just about threat responses.
Long-term improvement comes from building safety, observing patterns with curiosity, and gradually tolerating uncertainty rather than fighting or appeasing the behavior, an expert advised. (iStock)
Rather than seeing patterns like procrastination as flaws, the book encourages people to understand their protective function. That said, people should seek professional support for destructive behaviors that could cause severe distress or self-harm.
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“I encourage my patients to think about short-term pain for long-term gain, because if you just respond to discomfort and distress in the moment, you might find yourself in longer-term patterns you don’t like or want,” Gallagher said.
“I don’t think it explains the motivations for all people, as everyone is different, but I think it can certainly apply to some.”
“Our brain is a survival machine.”
Heriot-Maitland noted that everyone has a choice in how they handle their own potentially harmful habits.
“We don’t want to fight these behaviors, but nor do we want to appease them and let them carry on controlling, dictating and sabotaging our lives,” he said.
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Gallagher shared the following practical tips for people who may notice these patterns.
No. 1: Shift from self‑judgment to self-compassion
Instead of asking yourself “Why am I like this?” try focusing on the function of the behavior, she advised. For example, does it serve to soothe, numb or distract from other fears or threats?
Understanding the protective function of “bad” behaviors can reduce shame and open the door to more effective change, without excusing harm. (iStock)
No. 2: Notice patterns without fighting them (initially)
“Observing the behavior with curiosity helps weaken the automatic threat response,” Gallagher said.
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No. 3: Build a sense of safety
This can mean relying on grounding techniques, supportive relationships, predictable routines and self‑soothing practices.
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No. 4: Practice small, low‑stakes exposure to feared situations
“If the brain fears uncertainty, gently introducing controlled uncertainty can help retrain it,” the expert recommended.
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More than 59% of women may have high blood pressure by 2050, according to a new report from the American Heart Association.
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A new report by the American Heart Association (AHA) included some troubling predictions for the future of women’s health.
The forecast, published in the journal Circulation on Wednesday, projected increases in various comorbidities in American females by 2050.
More than 59% of women were predicted to have high blood pressure, up from less than 49% currently.
The review also projected that more than 25% of women will have diabetes, compared to about 15% today, and more than 61% will have obesity, compared to 44% currently.
As a result of these risk factors, the prevalence of cardiovascular disease and stroke is expected to rise to 14.4% from 10.7%.
The prevalence of cardiovascular disease and stroke in women is expected to rise to 14.4% from 10.7% by 2050. (iStock)
Not all trends were negative, as unhealthy cholesterol prevalence is expected to drop to about 22% from more than 42% today, the report stated.
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Dr. Elizabeth Klodas, a cardiologist and founder of Step One Foods in Minnesota, commented on these “jarring findings.”
“The fact that on our current trajectory, cardiometabolic disease is projected to explode in women within one generation should be a huge wake-up call,” she told Fox News Digital.
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“Hypertension, diabetes, obesity — these are all major risk factors for heart disease, and we are already seeing what those risks are driving. Heart disease is the No. 1 killer of women, eclipsing all other causes of death, including breast cancer.”
Cardiovascular disease is the leading cause of death for women in the U.S. and around the world. (iStock)
Klodas warned that heart disease starts early, progresses “stealthily,” and can present “out of the blue in devastating ways.”
The AHA published another study on Thursday revealing one million hospitalizations, showing that heart attack deaths are climbing among adults below the age of 55.
The more alarming finding, according to Klodas, is that young women were found more likely to die after their first heart attack than men of the same age.
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“This is all especially tragic since heart disease is almost entirely preventable,” she said. “The earlier you start, the better.”
Children can show early evidence of plaque deposition in their arteries, which can be reversed through lifestyle changes if “undertaken early enough and aggressively enough,” according to the expert.
Moving more is one part of protecting a healthy heart, according to experts. (iStock)
Klodas suggested that rising heart conditions are associated with traditional risk factors, like smoking, high blood pressure, high cholesterol, diabetes, obesity and a sedentary lifestyle.
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Doctors are also seeing higher rates of preeclampsia, or high blood pressure during pregnancy, as well as gestational diabetes. Klodas noted that these are sex-specific risk factors that don’t typically contribute to complications until after menopause.
The best way to protect a healthy heart is to “do the basics,” Klodas recommended, including the following lifestyle habits.
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Klodas especially emphasized making improvements to diet, as the food people eat affects “every single risk factor that the AHA’s report highlights.”
“High blood pressure, high blood sugar, high cholesterol, excess weight – these are all conditions that are driven in part or in whole by food,” she said. “We eat multiple times every single day, which means what we eat has profound cumulative effects over time.”
“Even a small improvement in dietary intake, when maintained, can have a massive positive impact on health,” a doctor said. (iStock)
“Even a small improvement in dietary intake, when maintained, can have a massive positive impact on health.”
The doctor also recommends changing out a few snacks per day for healthier choices, which has been proven to “yield medication-level cholesterol reductions” in a month.
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“Keep up that small change and, over the course of a year, you could also lose 20 pounds and reduce your sodium intake enough to avoid blood pressure-lowering medications,” Klodas added.
“Women should not view the AHA report as inevitable. We have power over our health destinies. We just need to use it.”
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