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eating a balanced diet may be beneficial to reduce your risk of cognitive decline

there are many aspects of diet in combination with engaging in a healthy lifestyle that may influence cognitive decline

this new study suggests that improving overall diet quality is an important factor for lowering the risk of memory and thinking loss

"healthy diet" as one containing lots of fruits and vegetables, nuts, fish, moderate alcohol use and minimal red meat

"We just wanted to look at a diverse cohort of people from all around the world and analyze what their risk for cognitive decline would be if they consumed what most organizations would consider a 'healthy diet',"

Participants were tested for their thinking and memory skills, at the start of the study, then again after two and five years.

participants with the healthiest diets were 24% less likely to experience cognitive decline compared to those with the least healthy diets. These individuals were slightly older in age, more active, less likely to smoke and had a lower BMI.

blueberries may boost memory, and that a high intake of saturated and trans fats can have negative effects

And this social role is difficult to play with an angry and anxious public face.

But that is exactly what Mr. Grinda did. He moved out of the Bedford house in December 2012, ditched the city apartment and got rid of the McLaren. He donated clothes, sports equipment and kitchen utensils to the Church of St. Francis Xavier in Lower Manhattan. He gave his furniture to Housing Works and he packed a Tumi carry-on suitcase with 50 items, including two pairs of jeans, a bathing suit and 10 pairs of socks.

Once he realized his days as a roving houseguest were numbered, Mr. Grinda decided to shift his approach: He kept traveling, but now he was renting apartments on Airbnb or staying in luxury hotels.

Born in suburban Paris in 1974, Mr. Grinda graduated from Princeton in 1996 with a degree in economics. He worked as a consultant at McKinsey & Company for two years before moving back to France to found an online auction start-up funded by the business magnate Bernard Arnault, which Mr. Grinda sold in 2000.He returned to the United States, where he co-founded Zingy, a mobile phone ringtone and game maker, which fetched $80 million in a 2004 sale. After that, he was a founder of OLX, a Craigslist-like service that has become one of the largest global classified websites.Now he is an entrepreneur and angel investor, with more than 200 investments to date, who visits start-ups in Berlin, Paris, New York, San Francisco and other cities.

He looks (and acts) something like Sheldon Cooper, the oddball science geek played by Jim Parsons on “The Big Bang Theory,” an observation Mr. Grinda himself has made.“Friends, who knew me in my late teens and early twenties, would tell you I had exactly the same delusional sense of self-worth and condescending and arrogant self-centered worldview,” he wrote in a blog post that noted his similarities to the sitcom character.

In all, Mr. Grinda said, he stayed with about 15 friends and family members in the first months of 2013. “Everyone was, like, ‘It’s a great idea. Come over,’ ” Mr. Grinda said. “The problem is, the idea of ‘Great, come over’ and me there 24 hours a day, seven days a week, is very different. Especially when their lives are not in sync with mine.”

“When I looked back at the things that mattered the most to me,” he said, “they were experiences, friendships and family — none of which I had invested much in, partly because I was too busy, and partly because I felt anchored by my possessions.”

He hatched a new plan: His friends and family members would come to him.“Rather than me going to them and disrupting their routine,” he said, “getting everyone together in a setting of vacation makes more sense.”

He invited his parents, his friends, their partners, children and nannies for a two-week stay in Anguilla, an island east of Puerto Rico, where he rented two conjoining houses, at a cost of $240,000, with chefs and full house service (and a total of 19 bedrooms).

Mr. Grinda forgot to consider that not everyone lives as he does.For one thing, he had scheduled the Anguilla vacation during the school year, which meant friends with children couldn’t make it. The island’s remoteness, furthermore, meant some guests were forced to endure a tangle of flight connections, leaving some of them exhausted by the time they arrived.And many of the people he invited, who had jobs and other obligations, could stay only for a long weekend.

Mr. Grinda said he has learned a lot from his very big downgrade. He reconnected with old friends, even if it meant annoying them a little, and he rekindled his relationship with his father.“We spent time talking about his life,” he said. And he is no longer against the idea of having a fixed address; he said he is now in negotiations to buy a two-bedroom apartment on the Lower East Side, which he plans to rent out when he is not in town.

Still, the experiment has taken its toll. “The philosophy is interesting,” he said. “But how do you put it into practice? How do you make it real?”

He recently split up with Otilia Aionesei, a former model who works at technology start-up, whom he had been dating, off and on, for two years. The sticking point was their lack of a shared home.“If you want to be his girlfriend, this is the life you have to lead,” Ms. Aionesei said. “I like simple things, to watch movies on the same couch.”Mr. Grinda had a different view. “We went to the Galápagos,” he said. “We went to Tulum. To St. Barts. We have these wonderful experiences and memories together.”

“My home is where I am,” he said. “And it doesn’t matter if it is a friend’s place or a couch or the middle of the jungle or a hotel room on the Lower East Side. But I realize that most of humanity, especially women, don’t see it that way.”

meaning is an uplifting state of consciousness. It’s what you feel when you’re serving things beyond self.

They subscribed to moral systems — whether secular or religious — that recommended specific ways of being, and had specific structures of what is right and wrong, and had specific disciplines about how you might get better over time.

Meaningfulness tries to replace structures, standards and disciplines with self-regarding emotion. The ultimate authority of meaningful is the warm tingling we get when we feel significant and meaningful.

The philosophy of meaningfulness emerges in a culture in which there is no common moral vocabulary or framework. It emerges amid radical pluralism, when people don’t want to judge each other. Meaningfulness emerges when the fundamental question is, do we feel good?

Meaningfulness tries to replace moral systems with the emotional corona that surrounds acts of charity.

Because meaningfulness is built solely on an emotion, it is contentless and irreducible. Because it is built solely on emotion, it’s subjective and relativistic. You get meaning one way. I get meaning another way. Who is any of us to judge another’s emotion?

Because it’s based solely on sentiment, it is useless. There are no criteria to determine what kind of meaningfulness is higher. There’s no practical manual that would help guide each of us as we move from shallower forms of service to deeper ones. There is no hierarchy of values that would help us select, from among all the things we might do, that activity which is highest and best to do.

Because it’s based solely on emotion, it’s fleeting. When the sensations of meaningful go away then the cause that once aroused them gets dropped, too. Ennui floods in. Personal crisis follows. There’s no reliable ground.

If we look at the people in history who achieved great things — like Nelson Mandela or Albert Schweitzer or Abraham Lincoln — it wasn’t because they wanted to bathe luxuriously in their own sense of meaningfulness. They had objective and eternally true standards of justice and injustice. They were indignant when those eternal standards were violated.

Real moral systems are based on a balance of intellectual rigor and aroused moral sentiments.

Republicans are the party of Big Energy and Big Food: they dominate contributions from extractive industries and agribusiness. And they are, in particular, the party of Big Pizza.

pizza partisanship tells you a lot about what is happening to American politics as a whole.

Why should pizza, of all things, be a divisive issue

The immediate answer is that it has been caught up in the nutrition wars

the pizza sector has chosen instead to take a stand for the right to add extra cheese.

The rhetoric of this fight is familiar. The pizza lobby portrays itself as the defender of personal choice and personal responsibility. It’s up to the consumer, so the argument goes, to decide what he or she wants to eat, and we don’t need a nanny state telling us what to do.

it doesn’t hold up too well once you look at what’s actually at stake in the pizza disputes.

Nobody is proposing a ban on pizza, or indeed any limitation on what informed adults should be allowed to eat. Instead, the fights involve things like labeling requirements — giving consumers the information to make informed choices — and the nutritional content of school lunches, that is, food decisions that aren’t made by responsible adults but are instead made on behalf of children.

Nutrition, where increased choice can be a bad thing, because it all too often leads to bad choices despite the best of intentions, is one of those areas — like smoking — where there’s a lot to be said for a nanny state.

diet isn’t purely a personal choice, either; obesity imposes large costs on the economy as a whole.

But you shouldn’t expect such arguments to gain much traction

For one thing, free-market fundamentalists don’t want to hear about qualifications to their doctrine

Also, with big corporations involved, the Upton Sinclair principle applies: It’s difficult to get a man to understand something when his salary depends on his not understanding it

nutritional partisanship taps into deeper cultural issues.

At one level, there is a clear correlation between lifestyles and partisan orientation: heavier states tend to vote Republican, and the G.O.P. lean is especially pronounced in what the Centers for Disease Control and Prevention call the “diabetes belt” of counties, mostly in the South, that suffer most from that particular health problem

At a still deeper level, health experts may say that we need to change how we eat, pointing to scientific evidence, but the Republican base doesn’t much like experts, science, or evidence. Debates about nutrition policy bring out a kind of venomous anger — much of it now directed at Michelle Obama, who has been championing school lunch reforms — that is all too familiar if you’ve been following the debate over climate change.

It is, instead, a case study in the toxic mix of big money, blind ideology, and popular prejudices that is making America ever less governable.

Extensive research in many countries has demonstrated that we can build metrics around social and emotional skills that help to make them tangible for educators and policy makers

the report provides a range of examples of learning practices that worked in developing social and emotional skills. For example, teachers can enhance children's motivation, self-esteem and emotional stability by becoming effective mentors and learning facilitators.

social and emotional skills are not just measurable, but also malleable. That means that schools, families and communities can play an active role in fostering these skills, they can be taught at home and school through adequate practices.

The OECD is about to publish the report "Skills for Social Progress: The Power of Social and Emotional Skills", that integrates available evidence on the importance of social and emotional skills for achieving positive life outcomes. It documents methods to measure social and emotional skills and it uses innovative analytical methods to show how social and emotional skills are drivers of social outcomes, such as health, civic engagement, and subjective well-being.

Parents can provide warm, supportive and interactive environments through day-to-day home activities or routines

when faced with a change that has the potential to make us more likely to survive, some brains are able to adapt more easily than others.

Daniel Amen has studied over 63,000 brains using brain imaging to study blood flow and activity patterns.

One interesting conclusion of his studies is that a healthy brain is much better equipped to make positive changes and stick to them.

The discovery of brain plasticity has proven that you can help people change their brains almost immediately, by providing an environment to support learning

Even a few drinks a week can reduce overall brain function and create areas of reduced brain function.

brain learns better when it is healthy, adopting a healthier lifestyle can help learners develop brains that are more receptive to change and new ideas.

Prolonged exposure to high blood pressure not only restricts blood flow to the brain, but increase the risk of dementia, heart attack and stroke.

a physical pattern, in the form of neural connections, is formed in the brain. Every time we go over this pattern by revisiting this thought, we make the behavior stronger.

Brains with a high degree of new activity tend to stay that way. Brains that are slow to learn new things gradually lose some of their ability to change.

In our sleep-deprived world, the average adult is walking around in a brain-induced fog. The brain uses sleep to rebuild and reorganize. Sleep deprivation can result in lower brain performance and less ability to change.

Counter to previous beliefs, meditation has been shown to activate the cerebral cortex, which is the seat of conscious thought.

“The Apple Watch is the most personal device we have ever created,” he said. “It’s not just with you, it’s on you.”

From here on out, there is no down time, and no excuses for reality escapes. You are connected, 24/7.

There is some evidence that heavy smartphone use makes you dumber. The theory is that a having the world at the other end of a mobile search makes for lazy minds, while people who depend less on their devices develop more analytical skills.

Add to this concerns about privacy: that the watch is a tracking device, which sends all your personal information to a central database — a corporate control center that already knows far too much about the preferences and habits of smartphone users.

China today, like Germany before the war, is an industrial power incapable of feeding its population from its own territory

The Kremlin, which is economically dependent on the export of hydrocarbons to Europe, is now seeking to make gas deals with individual European states one by one in order to weaken European unity and expand its own influence.

Denying science imperils the future by summoning the ghosts of the past.

He came down hard on nutrition in a pull-no-punches 2013 British Medical Journal editorial titled, “Implausible results in human nutrition research,” in which he noted, “Almost every single nutrient imaginable has peer reviewed publications associating it with almost any outcome.”

Ioannidis told me that sussing out the connection between diet and health — nutritional epidemiology — is enormously challenging, and “the tools that we’re throwing at the problem are not commensurate with the complexity and difficulty of the problem.” The biggest of those tools is observational research, in which we collect data on what people eat, and track what happens to them.

He lists plant-based foods — fruit, veg, whole grains, legumes — but acknowledges that we don’t understand enough to prescribe specific combinations or numbers of servings.

funding bias isn’t the only kind. “Fanatical opinions abound in nutrition,” Ioannidis wrote in 2013, and those have bias power too.

“Definitive solutions won’t come from another million observational papers or small randomized trials,” reads the subtitle of Ioannidis’s paper. His is a burn-down-the-house ethos.

When it comes to actual dietary recommendations, the disagreement is stark. “Ioannidis and others say we have no clue, the science is so bad that we don’t know anything,” Hu told me. “I think that’s completely bogus. We know a lot about the basic elements of a healthy diet.”

Give tens of thousands of people that FFQ, and you end up with a ginormous repository of possible correlations. You can zero in on a vitamin, macronutrient or food, and go to town. But not only are you starting with flawed data, you’ve got a zillion possible confounding variables — dietary, demographic, socioeconomic. I’ve heard statisticians call it “noise mining,” and Ioannidis is equally skeptical. “With this type of data, you can get any result you want,” he said. “You can align it to your beliefs.”

Big differences in what people eat track with other differences. Heavy plant-eaters are different from, say, heavy meat-eaters in all kinds of ways (income, education, physical activity, BMI). Red meat consumption correlates with increased risk of dying in an accident as much as dying from heart disease. The amount of faith we put in observational studies is a judgment call.

I find myself in Ioannidis’s camp. What have we learned, unequivocally enough to build a consensus in the nutrition community, about how diet affects health? Well, trans-fats are bad.

Over and over, large population studies get sliced and diced, and it’s all but impossible to figure out what’s signal and what’s noise. Researchers try to do that with controlled trials to test the connections, but those have issues too. They’re expensive, so they’re usually small and short-term. People have trouble sticking to the diet being studied. And scientists are generally looking for what they call “surrogate endpoints,” like increased cholesterol rather than death from heart disease, since it’s impractical to keep a trial going until people die.

, what do we do? Hu and Ioannidis actually have similar suggestions. For starters, they both think we should be looking at dietary patterns rather than single foods or nutrients. They also both want to look across the data sets. Ioannidis emphasizes transparency. He wants to open data to the world and analyze all the data sets in the same way to see if “any signals survive.” Hu is more cautious (partly to safeguard confidentiality

I have a suggestion. Let’s give up on evidence-based eating. It’s given us nothing but trouble and strife. Our tools can’t find any but the most obvious links between food and health, and we’ve found those already.

Instead, let’s acknowledge the uncertainty and eat to hedge against what we don’t know

We’ve got two excellent hedges: variety and foods with nutrients intact (which describes such diets as the Mediterranean, touted by researchers). If you severely limit your foods (vegan, keto), you might miss out on something. Ditto if you eat foods with little nutritional value (sugar, refined grains). Oh, and pay attention to the two things we can say with certainty: Keep your weight down, and exercise.

I used to say I could tell you everything important about diet in 60 seconds. Over the years, my spiel got shorter and shorter as truisms fell by the wayside, and my confidence waned in a field where we know less, rather than more, over time. I’m down to five seconds now: Eat a wide variety of foods with their nutrients intact, keep your weight down and get some exercise.

Put simply, incompetent people think they know more than they really do, and they tend to be more boastful about it.

To test Darwin’s theory, the researchers quizzed people on several topics, such as grammar, logical reasoning and humor. After each test, they asked the participants how they thought they did. Specifically, participants were asked how many of the other quiz-takers they beat.

Time after time, no matter the subject, the people who did poorly on the tests ranked their competence much higher

On average, test takers who scored as low as the 10th percentile ranked themselves near the 70th percentile. Those least likely to know what they were talking about believed they knew as much as the experts.

Dunning and Kruger’s results have been replicated in at least a dozen different domains: math skills, wine tasting, chess, medical knowledge among surgeons and firearm safety among hunters.

Even though President Trump’s statements are rife with errors, falsehoods or inaccuracies, he expresses great confidence in his aptitude. He says he does not read extensively because he solves problems “with very little knowledge other than the knowledge I [already] had.” He has said in interviews he doesn’t read lengthy reports because “I already know exactly what it is.”

He has “the best words” and cites his “high levels of intelligence” in rejecting the scientific consensus on climate change. Decades ago, he said he could end the Cold War: “It would take an hour and a half to learn everything there is to learn about missiles,” Trump told The Washington Post’s Lois Romano over dinner in 1984. “I think I know most of it anyway.”

Whether people want to understand “the other side” or they’re just looking for an epithet, the Dunning-Kruger effect works as both, Dunning said, which he believes explains the rise of interest.

Dunning says the effect is particularly dangerous when someone with influence or the means to do harm doesn’t have anyone who can speak honestly about their mistakes.

Not surprisingly (though no less concerning), Dunning’s follow-up research shows the poorest performers are also the least likely to accept criticism or show interest in self improvement.

Big Tech is easily associated with West Coast liberalism and Democratic politics, making it a fertile target for the right. And operational opacity at Facebook, Google and Twitter, which are reluctant to reveal details about their algorithms and internal policies, can leave them vulnerable, too.

“There’s not even a real basis to establish objective research about what’s happening on Facebook, because it’s closed.”

And former President Barack Obama said at an off-the-record conference at the Massachusetts Institute of Technology last month that he worried Americans were living in “entirely different realities” and that large tech companies like Facebook were “not just an invisible platform, they’re shaping our culture in powerful ways.” The contents of the speech were published by Reason magazine.

“There are political activists in all of these companies that want to actively push a liberal agenda,” he said. “Why does it matter? Because these companies are so ubiquitous and powerful that they are controlling all the means of mass communication.”

He is also the president of the Government Accountability Institute, a conservative nonprofit organization. He and Mr. Bannon founded it with funding from the family of Robert Mercer, the billionaire hedge fund manager and donor to Donald J. Trump’s presidential campaign.

Jeffrey A. Zucker, the president of CNN, derided Google and Facebook as “monopolies” and called for regulators to step in during a speech in Spain last month, saying the tech hegemony is “the biggest issue facing the growth of journalism in the years ahead.”

The panelists accused social media platforms of delisting their videos or stripping them of advertising. Such charges have long been staples of far-right online discourse, especially among YouTubers, but Mr. Schweizer’s project is poised to bring such arguments to a new — and potentially larger — audience.

The Facebook adjustment has affected virtually every media organization that is partly dependent on the platform for audiences, but it appears to have hit some harder than others. They include right-wing sites like Gateway Pundit and the millennial-focused Independent Journal Review, which was forced to lay off staff members last month.

The social news giant BuzzFeed recently bought ads on Facebook with the message, “Facebook is taking the news out of your News Feed, but we’ve got you covered,” directing users to download its app. Away from the political scrum, the viral lifestyle site LittleThings, once a top publisher on the platform, announced last week that it would cease operations, blaming “a full-on catastrophic update” to Facebook’s revised algorithms.

The idea behind the class is deceptively simple, and many of the lessons — such as gratitude, helping others, getting enough sleep — are familiar.

“A lot of people are waking up, realizing that we’re struggling,

All semester, hundreds of students tried to rewire themselves — to exercise more, to thank their mothers, to care less about the final grade and more about the ideas.

But in ways small and large, silly and heartbreakingly earnest, simple and profound, this class changed the conversation at Yale. It surfaced in late-night talks in dorms, it was dissected in newspaper columns, it popped up, again and again, in memes.

It’s the application that’s difficult, a point Santos made repeatedly: Our brains often lead us to bad choices, and even when we realize the choices are bad, it’s hard to break habits.

In a way, the class is the very essence of a liberal-arts education: learning, exploration, insight into oneself and the world. But many students described it as entirely unlike any class they had ever taken — nothing to do with academics, and everything to do with life.

There’s no longer the same stigma around mental-health issues, he said. “Now, so many people are admitting they want to lead happier lives.”

The impact is not limited to Yale. Stories about PSYC157 spread around the world. Santos created a pared-down version of the class and offered it to anyone on the online education site Coursera.

She taught students about cognitive biases.

“We called it the ways in which our minds suck,” Forti said. “Our minds make us think that certain things make us happy, but they don’t.”

Then, they had to apply the lessons

There was a palpable difference on campus, several students said, during the week when they performed random acts of kindness.

The biggest misconception people have about the class is that Santos is offering some kind of easy happiness fix. “It’s something you have to work on every day. . . . If I keep using these skills, they’ll, over time, help me develop better habits and be happier.

So many students have told her the class changed their lives. “If you’re really grateful, show me that,” she told them. “Change the culture.

for now students stood and clapped and clapped and clapped, beaming, drowning out even Kanye with their standing ovation. As if they had nothing but time.

More generative for him are the examples of artists who became known as Minimalists even as they disavowed the term.

What’s most striking about Chayka’s minimalist gestures is how frail they seem next to the larger upheavals that are taking place.

Discussing the renunciatory philosophy of the Stoics and Henry David Thoreau, he discerns “a strategy of avoidance, especially in moments when society feels chaotic or catastrophic.” There’s a strain of this in contemporary lifestyle minimalism, which offers self-protection and retreat: “Your bedroom might be cleaner, but the world stays bad.”

The minimalism that Chayka seeks encourages not an escape from the world but a deeper engagement with it

Chayka’s journey ends in a rock garden in Kyoto, where serene contemplation contends with jostling visitors.

“Up through the 20th century, material accumulation and stability made sense as forms of security,” Chayka writes. “Little of this feels true today.” Tangible goods now cost exceedingly less, and intangible “forms of security” cost exceedingly more.

After all, it’s unlikely that the tchotchkes or the new TV set will toss you into financial straits; it’s the college tuition that will put you into crushing debt, the very real possibility you’ll outlive your meager retirement account, or the medical treatment not covered by insurance.

Reading Chayka’s book put me in mind of a longing for less stuff, and a longing for more support.