As much as we focus on food and fitness as the “physical” arbiters of health and longevity, there appears to be much more to it. In fact, most research fails to find any grand commonalities in the diet and fitness patterns of the longest lived. From Okinawans with their sweet potatoes  to Japanese centenarians with their dairy  to the Ashkenazi with their higher rates of smoking, drinking, and lower rates of formal exercise  to the 107 year old with her butter, no exercise, and mistrust of medicine  to the supercentenarians with their liver, bacon, wine, chocolate, and eggs to the other supercentenarians with their caloric restriction . Sure, they’re generally not eating Twinkies and Panda Express, but the secret to longevity – at least as it’s practiced by living centenarians – does not lie in one specific diet.
So what is it? One main determinant appears to be whether you have certain alleles . You can’t change that (not yet anyway), but there are some things you can control. What you can affect – and what appears to have a big effect on, or at least a strong association with longevity  – are personality traits and characteristics. How you see the world. How you engage life. How you interact with others. Now, to be sure, many personality traits are somewhat out of your conscious control, whether genetically determined  or set in motion by events long-past, but that doesn’t mean you can’t try to cultivate or emulate them .
What are some of these characteristics?
Perhaps one of the prime directives of the human is to be social . To have friends and loved ones upon whom you can lean when required or desired. I’m not necessarily talking about being the guy with a thousand Facebook friends who’s out every night living it up, or even the lady who always runs into someone she knows when out and about. Socially connected simply means having meaningful relationships with other people. It could be ten, twenty, or five. The point is that it helps to have actual, real friends and loved ones, and we’re probably evolutionarily driven to want and make them because they provide a benefit to survival.
Why might social connections support longevity? The research is ongoing, but I can think of a few reasons. First, people with meaningful relationships can call on them for help in times of need and hardship. Need some rent money or to pay for an important surgical procedure? You can probably count on friends and family to help. Recovering from said surgical procedure and need someone to help you get groceries and cook? Call a friend or family member. Need a ride? Call someone you know. If you don’t know anyone you can count on, your options will be limited.
Second, social isolation and loneliness are often associated  with negative health patterns, like obesity, inactivity, and smoking. Plus, the socially isolated and lonely are more likely to have hypertension, elevated inflammatory markers, and increased blood clotting. In one study , people who had close friends in the same room with them had less of a blood pressure and heart rate increase in response to stress. Another study  found that in people exposed to a cold virus, those with more social connections were less likely to actually get sick than those with fewer social connections.
It’s good to have friends. All else being equal, the person who’s happy with their relationships is probably going to live longer than the person who’s unhappy with or bereft of social connections.
- Use social networks like Facebook and Meetup to arrange real life activities and augment your social lives. Make plans with friends and follow up on them. Join a Meetup group  that sounds interesting and attend the events. It’s easy to let social media replace our social interactions, but it’s not a preordained inevitability.
- Don’t be that person who regrets not calling/contacting their friends more. Some people truly have no friends or family, but that’s rare. More often than not, people just aren’t willing to make the effort, maybe because they don’t see the need, maybe because they’re lazy, maybe because they’re anxious, or maybe because they’re waiting for the other person to contact them. Be proactive in fostering and maintaining the relationships you already have.
According to health researchers Howard Friedman and Leslie Martin , conscientiousness is a big (perhaps the biggest) influence on longevity. Using data from a study that began in 1921 and followed a group of 1500 boys and girls into old age and beyond, the two found that the kids who were “prudent, persistent, planful” went on to live the longest lives, while the “cheerful and optimistic” children lived shorter lives. The former group tended to take fewer risks, be more responsible about their health, and cultivate a better social network. They also had more satisfying and successful professional lives. Overall, the persistent, industrious, organized, and disciplined “facets of conscientiousness” were most strongly associated with longevity .
This connection is well-researched. Conscientious people tend to be healthier and take better care of themselves . Childhood conscientiousness is linked  to better health later on in life. Most of the connection between conscientiousness and longevity can be explained by obvious factors, like the fact that thoughtful people are more likely to care about their diet and other health-related behaviors and therefore make better health-related decisions, but not all of it . Conscientiousness, for example, also seems to go hand-in-hand with cognitive function and it may even be protective against Alzheimer’s and other diseases of cognitive degeneration . Those who are conscientious may also deal with stress better  than those who are not, probably by virtue of being better prepared for it.
There’s got to be a balance, though, I’d imagine. What if conscientiousness veers into obsession? What if dedication to self-discipline devolves into self-flagellation ? What if hard work becomes workaholicism and breaks up your marriage?
- Practice, practice, practice. Make schedules and budgets. Plan out your day, and hew to the plan. If you aren’t naturally disciplined and organized, you can still become conscientious – it’s just gonna be a bit harder.
- Don’t just self-analyze. Ask others close to you about their perception of your conscientiousness, and adjust accordingly. After all, the original 1921 study analyzed the kids’ personalities by asking their parents, not the kids themselves.
Don’t Worry Too Much
Longer lived people (and waterfowl) are able to let things slide off their backs . They tend to be easy going and don’t get hung up on silly stuff as much. Consider the interplay with conscientiousness, however. Just as too much conscientiousness might manifest as obsessiveness and lead to poorer health and longevity, being too carefree might lead to poor decision-making and flagrant abuse of one’s health. A balance is likely best, where you don’t sweat the small stuff enough to heap unnecessary stress upon your back but take the important aspects of life seriously.
- Don’t cry over spilled milk (unless it’s raw and comes from grass-fed Jersey cows, of course). Better yet, get down on the floor and lap it all up.
- Forgive people. If there’s something you’ve been mulling over, some perceived slight, some past transgression, consider forgiving that person and moving on.
- When you’re worked up about something, stop and ask yourself what exactly is bothering you so much. Get specific when you answer. You might just find there’s nothing there.
- Make a list of all the things you tend to worry about. Then, objectively analyze the relative “seriousness” of each item. Discard the items that aren’t very serious. Make specific plans to take care of the serious items that merit your attention. Once this is completed, you’ll have discarded the frivolous stressors and made plans to tackle the serious ones. The point is you’ll have less to worry about now.
- Look into Stoicism. Here’s a decent representation  of what it’s all about. You can’t control everything, and you have to be okay with that.
- Explore stress-reducing herbs  and teas .
- Meditate .
Seemingly contrary to the other findings about optimistic kids dying earlier, some research suggests that optimism is a good predictor of longevity . Optimists are more resistant to stress , generally lead longer and healthier lives than pessimists, and, well, optimism seems to be encoded into our genome . According to neuroscientist Tali Sharot, “optimism was selected by evolution precisely because, on balance, positive expectations enhance the odds of survival.”
I wrote about this last year . Optimists, quite simply, are fighters. They’re fighters because they can see a point to it all, a light glimmering at the end of the tunnel, and so they continue on. They don’t give up, because why would you if things are going to work out? To an optimist, things only fail because you gave up on them. If you’re faced with a cancer diagnosis – say, lung cancer  – and you’re an optimist, you’re more likely to survive longer.
- Look at the bright side of a “bad” situation. That’s it. Just look at it. Perceive it. Observe it. Acknowledge it. When you do that in an objective way, you can’t help but feel a little better about the situation.
- Throw yourself out there anyway. Things aren’t that bad. Trust me. When you actually go out and face it and it goes okay, you’ve just learned that things aren’t always as bad as you assume.
- Get those small wins  that lead to big success (and optimism).
Easy to Laugh
There’s considerable research that ease of laughter is a strong predictor of longevity . He who laughs most, laughs last, in other words. Laughter  isn’t just enjoyable. It’s also really good for you. It reduces stress and improves natural killer cell  (a part of your immune system responsible for fighting cancer and other diseases) activity. It lowers cortisol . While growth hormone is best known for its fat-burning effects, it can also have a negative impact in rheumatoid arthritis; laughter reduces the RA-associated growth hormone increase . Overall, laughter simply has “positive, quantifiable effects on certain aspects of health .”
- Watch funny media. Whether you like Laurel and Hardy or Tim and Eric, find something that you determine generates a high level of mirthful activity in your brain and expose yourself to it, repeatedly.
- Watch standup. I recommend Louis CK.
- Just laugh. This sounds obvious, but you don’t even have to find something funny in order to laugh. In the immortal words of George Costanza, “What is the point of opening your mouth and going ‘Ha-ha!’?” It’s that easy. Force yourself to laugh and the real feelings will likely follow. Do this once a day, minimum.
- Try laughter yoga . It’s exactly what it sounds like.
In 2011, a study  of older men and women found that those who were happiest throughout the day lived the longest. Interestingly, this association was independent of baseline health status or other variables, suggesting that momentary happiness “may be causally related to survival, or may be a marker of underlying biological, behavioral, or temperamental factors.” Even those with chronic diseases saw longevity benefits from being happy.
I think this comes down to something very simple: happy people have “something to live for.” They have a reason to get out of bed in the morning. Yeah, yeah, a meaningful career, grandkids, a loving spouse, a faithful dog – these are all good reasons to keep living. But when it comes down to it, if you can wake up confident in the fact that your day is going to be an enjoyable, happy one, you will live better and live longer.
- Live life. Unless we’re talking chemically-induced happiness, happiness doesn’t just spring up out of nothing. You are happy because good things are happening in real, actual life. Maybe you just got a puppy or a girlfriend. Maybe you got a great new job. Maybe you’re reading a good book . Maybe you went on a hike and the flowers were blooming. The point is happiness is a reaction to happy events. You’re not really going to be able to “think yourself” happy.
- Do things that you know you’re going to enjoy and appreciate even if they require momentary unhappiness. You know how you’re always happy when you get up early enough to do some gardening (or hike, or work out, or clean the kitchen, or make a good breakfast) before it gets too hot (or late), but getting out of bed to actually do it is a short struggle that you usually lose? Just do it anyway. It’s not that bad. Play the long game.
Extraversion is a significant predictor of longevity , happiness , resistance to stress , and even mood regulation in the face of unpleasant situations . I tend to suspect that introverts might not live as long not because of something inherent to introverts, but because modern society is geared toward and favors extraversion. An introvert probably experiences more stress  in response to social fundamentals, like job interviews, small talk, presentations, and anything else where extraversion helps. You can be introverted and completely comfortable with that fact  and be totally fine, or at least minimize the downsides. But if you’re an introvert who’s unhappy, who’s envious of extroverts, you may suffer.
Also, extraversion is more “costly.” A study of older adults found that in order to maintain their psychological well-being, extraverts needed large social networks .
- Act the part. Even though social interaction may be more difficult for introverts, “acting like” an extrovert can increase well-being just the same , even in introverts .
- Start a conversation at least once a day. Go up and talk to people.
- Introversion does not imply social isolation. You may not be the life of the party, but you can still have quality relationships – perhaps just with fewer people.
That’s about it for today, folks. I hope this was a helpful post and that you can begin cultivating some of these traits in your own lives. Be sure to let me know what you think – any good anecdotes about the personalities of long-lived people you’ve known?