Being Selfish Is Bad for Your Health — and the Science Backs It

For thousands of years, selfishness has been treated primarily as a moral failing.

Science is giving us another reason to avoid it:

It is bad for your health.

This is one of the central ideas behind the new book GRP—The Golden Rule Paradox:

Thinking of others first benefits you the most.

Being selfish actually hurts you the most.

And science is giving us powerful evidence as to why.

Research across psychology, medicine, and public health has uncovered remarkable connections between helping others, strong social relationships, purpose, and health—including how people respond to stress and even how long they live.

The numbers are difficult to ignore.

Giving Can Literally Help You Live Longer

Chapter 2 of GRP—The Golden Rule Paradox examines a surprising question: What if thinking of others first doesn’t just make you happier—but can actually make you healthier and even help you live longer? And what if selfishness does the opposite?

Researchers have repeatedly found powerful connections between helping other people and longevity.

In a national longitudinal study of 3,376 older married adults, researchers examined caregiving and mortality. Those who spent at least 14 hours per week helping care for their spouse had a decreased risk of mortality, even after researchers accounted for the spouse’s health limitations and other demographic and health variables.

We naturally assume the person receiving care is the beneficiary.  Of course they are.

But the research reveals something remarkable:

The caregiver benefits too.

That is GRP in action.

Helping Others Protects Us From the Effects of Stress

Another study produced an even more striking result.

Researchers followed 846 adults in the Detroit area for five years, recording stressful life events, whether participants had provided tangible assistance to friends or family, and ultimately mortality.

As expected, stress could be dangerous. But there was a fascinating difference depending on whether people helped others.

Among participants who did not help others, each additional stressful event was associated with a 30 percent increase in mortality risk in the researchers’ statistical model.

Among participants who did help others, stressful events did not significantly predict mortality.

The researchers controlled for age, baseline health and functioning, and key psychosocial variables. Their conclusion was remarkable: providing help to others predicted a reduced association between stress and mortality.

Once again, who was helping whom?

148 Studies. 308,849 People. A 50 Percent Difference.

Individual studies are fascinating. But when researchers combine results across many studies and hundreds of thousands of people, the evidence becomes much harder to ignore.

Researchers Julianne Holt-Lunstad, Timothy Smith, and J. Bradley Layton conducted a massive meta-analysis examining social relationships and mortality.

It included 148 studies and 308,849 participants.

The result?

People with stronger social relationships had a 50 percent greater likelihood of survival than people with weaker relationships. The finding remained consistent across age, sex, initial health status, cause of death, and length of follow-up.

A 50 percent greater likelihood of survival is comparable to the difference in mortality risk between smokers and nonsmokers.

Even more striking, when researchers examined more complex measures of social integration, the odds of survival were 91 percent greater.

The researchers concluded that the influence of social relationships on mortality risk was comparable with well-established health risk factors.

We spend enormous amounts of time thinking about diet, exercise, and other things that can extend our lives.

Perhaps we should also be asking:

How connected am I to other people?

Self-Centeredness Can Become a Trap

Now consider the opposite direction.

Long-term research discussed in GRP—The Golden Rule Paradox found a troubling relationship between loneliness and self-centeredness.

Loneliness predicted increases in self-centeredness, while self-centeredness helped perpetuate loneliness.

It becomes a vicious cycle.

A person becomes lonely and increasingly turns inward:

What do I need?

Why isn’t anyone there for me?

Why am I unhappy?

But greater self-focus makes meaningful connection more difficult, reinforcing the loneliness that caused the person to turn inward in the first place.

That is GRP operating in reverse.

The attempt to protect the self ultimately hurts the self.

Not All Happiness Is the Same

Another fascinating line of research in GRP asks a provocative question:

Are all forms of happiness equally beneficial?

Scientists at UCLA distinguished between two broad forms of well-being.

Hedonic well-being— associated primarily with pleasure and personal gratification. Happiness derived from receiving things.

Eudaimonic well-being—associated more strongly with meaning, purpose, contribution, and a life extending beyond oneself.  Happiness derived from having strong relationships.

Researchers studying healthy adults found that these different forms of well-being were associated with different patterns of gene expression involving inflammatory and antiviral responses.

Then, they drew blood from the participants and measured gene markers of inflammation from their white blood cells. 

Here were the conclusions: 

“those with eudaimonic well-being showed favorable gene-expression profiles in their immune cells and those with hedonic well-being showed an adverse gene-expression profile.” —UCLA news 2013 

One of the most powerful observations from the work: 

Neither group could tell the difference in their own health. 

Here’s another quote from the UCLA article: 

“People with high levels of hedonic well-being didn’t feel any worse than those with high levels of eudaimonic well-being, both seemed to have the same high levels of positive emotion. However, their genomes were responding very differently, even though their emotional states were similarly positive.”

 —Dr. Steven Cole, UCLA Medicine 

Again, those individuals who were happier because of selfless reasons had healthier gene markers than those that were happier because of selfish or materialistic reasons.

Both groups could experience happiness. Yet beneath the surface, their biology told a more complicated story.

The takeaway isn’t that pleasure is bad.

Enjoy the vacation. Buy something you want. Eat dessert. Celebrate your success.

GRP isn’t an argument against enjoying your life.

It is an argument against making yourself the center of it.

So Is Selfishness Really Bad for Your Health?

This is where scientific precision matters.

Researchers aren’t dividing thousands of people into “selfish” and “selfless” groups and following them until they die.

The science measures things such as helping behavior, caregiving, loneliness, social connection, purpose, social support, and different forms of well-being.

So no single study proves that every selfish act damages your health.

The power comes from the cumulative pattern.

A life dominated by self-focus and disconnection deprives us of things human beings need: connection, purpose, meaning, community, and the opportunity to matter to someone besides ourselves.

Conversely, helping others strengthens relationships, increases connection, provides purpose, and changes the way we respond to stress.

Across different researchers, populations, methodologies, and outcomes, a remarkably consistent picture emerges:

Human beings function better when our lives extend beyond ourselves.

The Problem With “Put Yourself First”

Our culture constantly tells us:

Put yourself first.

Focus on your happiness.

Get what you deserve.

Do what’s best for you.

There are obviously times when taking care of yourself and establishing boundaries are essential. GRP does not mean neglecting yourself or allowing others to take advantage of you.

But taken too far, “put yourself first” contains a profound contradiction.

What if relentlessly pursuing your own happiness actually makes it harder to find?

What if a life centered primarily around me produces less connection, less meaning, and ultimately less well-being?

And what if caring about we… produces benefits that eventually circle right back to me?

That is GRP.

The Golden Rule Was Never Just About Them

Humanity has been teaching some version of the Golden Rule for thousands of years:

Treat other people the way you would want to be treated.

Traditionally, we have understood that as moral wisdom.

Do something for them because it is the right thing to do.

GRP asks us to look again.

Because science is revealing the other half of the equation:

When you do something for them, something happens to you.

The person who helps becomes more resilient to stress.

The caregiver receives health benefits.

The person who connects becomes less isolated.

The person who builds a life around meaning and purpose experiences well-being differently.

Perhaps one of humanity’s oldest moral teachings was never merely a rule about how to treat everyone else.

Perhaps it was also telling us something profound about how human beings were built to live.

Thinking of others first isn’t only good for them.

The science shows that it is remarkably good for you.

And this is only one piece of the case presented in GRP—The Golden Rule Paradox. Across research into happiness, health, longevity, relationships, business, history, and human behavior, the same phenomenon continues to appear: 

thinking of others first benefits us in ways most of us were never taught to recognize, and thinking of ourselves first at the expense of others hurts us in ways most of us don’t even realize.

That is GRP—The Golden Rule Paradox.