The new science on chronically harsh and conflict-ridden households.

Snapshots of life at home.
Aug. 11 2010 10:06 AM

Children and Stress

The new science on chronically harsh and conflict-ridden households.

(Continued from Page 1)

Second, such harsh environments can be produced by multiple factors that individually don't seem that significant but can influence one another in a snowball effect. For example, low-level conflict between parents that continues a bit longer than usual can lead to changes in how they talk to their child, and a little more edge and stress in the parent's voice can increase child misbehavior, such as more noncompliance. That push-back from the child grates with special force on a parent's nerves that are already raw because of some added problem, like real or threatened loss of a job.

Everyone's reactions go up a notch, with raging parents and whiny children egging each other on in an ascending spiral of stress. Such things normally happen in most homes without long-range effect, but they are usually short-lived. When the stressors continue for weeks and months, are a little more intense than usual, and seem to become a way of life, significant psychological and physical problems are more likely to emerge. No one knows exactly how much stress will do it. Even if we did identify a tipping point, it would vary for each family and individual based on many other influences—such as, for instance, other sources of emotional support in each person's life.

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Third, researchers have made progress in understanding the precise nature of the connections between the psychological conditions in which a child is raised and the heightened risk of disease later in life and early death. One view has been that growing up in harsh environments makes a person more likely to engage in risky behaviors such as smoking, excessive drinking, and risky sexual practices, thereby make children from such homes more likely to have some of the diseases mentioned previously. Maybe these kids grow up to be less healthy just because they do more things that we already know are bad for you. But even if that's true, it's not the whole story. The research shows that stress reactions and hormone and neuroendocrine responses all by themselves, independent of risky habits like smoking or heavy drinking, are different among people with early exposure to stress.

Some of the recent research along this line has been done on animals, which often have biological characteristics similar to ours but can be studied under controlled conditions that are difficult or impossible to achieve with human subjects. For example, exposing mice to chronically stressful living conditions by repeatedly introducing an aggressive mouse intruder into their cages disrupts their social hierarchy. For the mice, this is roughly equivalent to the effect on us of having a representative from a local gang or the IRS visiting us at dinnertime each night to go over our finances in depth. The mice living in the cage show signs of fear, submissiveness, and stress, leading to biological changes that harm the ability of their immune systems to deal with disease. These changes are very much like what is found in the human studies, and yet the mice don't smoke and drink to deal with their stress.

Human studies have also been conducted to chart the course of biological responses to stress. They show in more detail the physiological changes that control activation of the immune system and that control inflammation, a characteristic result of assaults on the body from bacteria, virus, or injury. Inflammation in various organs and the circulatory systems contributes to age-related medical conditions such as heart disease, cancers, Alzheimer's, diabetes, metabolic syndrome, autoimmune disorders, and more. The research is showing us that, under chronic stress, a complex biological reaction kicks in that affects the neuroendocrine system and that these changes—independent of behaviors that might impair health—increase a person's susceptibility to disease by rendering the immune system less vigilant and effective.

Again, not everyone is affected by stress to the same degree, but we can already say, in a general way, that the findings oblige us to reconsider some conventional wisdom.

The prime example is "What does not kill you will make you stronger." That's true often enough in life, especially if you're a serious weightlifter, but in relation to stressors it's not. Stressors that do not kill a child in the short run can weaken the body and lead to a lot of illness, and they can kill. The more accurate amended cliché would be "What does not kill you can sometimes make you stronger, but it can definitely make you weaker too." Or, more simply, "What does not kill you now may kill you later."

These are findings that families can try to do something about. Being aware that sustained stress and conflict in the home have silent effects is important. We have learned from public awareness campaigns that high blood pressure is "the silent killer." High ongoing stress in the home for a child is similarly dangerous. A parent will never see the changes in the immune system of a child that have been documented in human and animal studies, and routine laboratory blood tests, urinalyses, and camp physicals do not test for such changes. A parent may not be able to tell if a child has more colds or illness when compared to other children. But the research shows us that for many people the negative effects are there, hidden from casual view, and will continue to show up decades after the child leaves the home.

What can one do? Some of the modest, daily measures we have discussed in other articles take on special importance. Activities that can bring stability to home life operate to reduce stress. Routines and rituals—going to the store together, playing a game, engaging in some regular family activity, eating meals together—help reduce stress. Family activities, assuming they are not riddled with conflict, are all to the good. These activities are not necessarily about fun, although fun is fine, and they're not about spending money. Downtime, family time, and everyday routines all can alleviate stress. Recommending them is way beyond common sense now: They are an investment in physical health and are "psychological nutrients" for a sound immune system.

And, of course, you can take a kinder tone with your kids, no matter how strict you may be with them. A recent study has shown that reducing harsh parenting—draconian discipline, sharp criticism—and increasing warmth, affection, and praise for good behavior contributed to reduction in biological indices of stress responses, like the levels of cortisone, a stress hormone. Again, this doesn't mean that anyone's advocating that parents become permissive or weak. The opposite, in fact: Going off on your kids because you're frustrated is a form of giving in to weakness; it takes a lot more strength to be gentle with them even while exercising your authority and coping with your own undeniably stress-inducing problems.

The current recession has made it especially timely to be sensitive to stressors of family life. The Foundation for Child Development recently evaluated current research and its impact on children and found that more children in this country are living in poverty now than in the past 20 years, with approximately 20 percent of youth living below the poverty line, and more are living in homes in which parents do not have secure employment. Marital discord and conflict in the home are heavily affected by economic conditions that can lead to, for instance, reduced health care or a poorer diet. More than ever, it's important to recognize that chronic household harshness and chaos can do lasting harm to children even when it doesn't rise to the level of legally defined abuse.

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