Dr David A. Sinclair - Lifespan

Здесь есть возможность читать онлайн «Dr David A. Sinclair - Lifespan» — ознакомительный отрывок электронной книги совершенно бесплатно, а после прочтения отрывка купить полную версию. В некоторых случаях можно слушать аудио, скачать через торрент в формате fb2 и присутствует краткое содержание. Жанр: unrecognised, на английском языке. Описание произведения, (предисловие) а так же отзывы посетителей доступны на портале библиотеки ЛибКат.

Lifespan: краткое содержание, описание и аннотация

Предлагаем к чтению аннотацию, описание, краткое содержание или предисловие (зависит от того, что написал сам автор книги «Lifespan»). Если вы не нашли необходимую информацию о книге — напишите в комментариях, мы постараемся отыскать её.

In this paradigm-shifting book from acclaimed Harvard Medical School doctor and one of TIME magazine’s 100 most influential people on earth, Dr. David Sinclair reveals that everything we think we know about ageing is wrong, and shares the surprising, scientifically-proven methods that can help readers live younger, longer.For decades, the medical community has looked to a variety of reasons for why we age, and the consensus is that no one dies of old age; they die of age-related diseases. That's because ageing is not a disease – it is inevitable. But what if everything you think you know about ageing is wrong? What if ageing is a disease? And that disease is curable. In THE EVOLUTION OF AGEING, Dr. David Sinclair, one of the world’s foremost authorities on genetics and ageing, argues just that. He has dedicated his life’s work to chasing more than a longer lifespan – he wants to enable people to live longer, healthier, and disease-free well into our hundreds. In this book, he reveals a bold new theory of ageing, one that pinpoints a root cause of ageing that lies in an ancient genetic survival circuit. This genetic trick – a circuit designed to halt reproduction in order to repair damage to the genome –has enabled earth’s early microcosms to survive and evolve into more advanced organisms. But this same survival circuit is the reason we age: as genetic damage accumulates over our lifespans from UV rays, environmental toxins, and unhealthy diets, our genome is overwhelmed, causing gray hair, wrinkles, achy joints, heart issues, dementia, and, ultimately, death. But genes aren’t our destiny; we have more control over them than we’ve been taught to believe. We can’t change our DNA, but we can harness the power of the epigenome to realise the true potential of our genes. Drawing on his cutting-edge findings at the forefront of medical research, Dr. Sinclair will provide a scientifically-proven roadmap to reverse the genetic clock by activating our vitality genes, so we can live younger longer. Readers will discover how a few simple lifestyle changes – like intermittent fasting, avoiding too much animal protein, limiting sugar, avoiding x-rays, exercising with the right intensity, and even trying cold therapy – can activate our vitality genes. Dr. Sinclair ends the book with a look to the near future, exploring what the world might look like – and what will need to change – when we are all living well to 120 or more. Dr. Sinclair takes what we have long accepted as the limits of human potential and mortality and turns them into choices. LIFESPAN is destined to be the biggest book on genes, biology, and longevity of this decade.

Lifespan — читать онлайн ознакомительный отрывок

Ниже представлен текст книги, разбитый по страницам. Система сохранения места последней прочитанной страницы, позволяет с удобством читать онлайн бесплатно книгу «Lifespan», без необходимости каждый раз заново искать на чём Вы остановились. Поставьте закладку, и сможете в любой момент перейти на страницу, на которой закончили чтение.

Тёмная тема
Сбросить

Интервал:

Закладка:

Сделать

Vera taught me to drive, swerving and swaying across all of the lanes, “dancing” to whatever music was on the car’s radio. She told me to enjoy my youth, to savor the feeling of being young. Adults, she said, always ruined things. Don’t grow up, she said. Never grow up.

Well into her 60s and 70s, she was still what we call “young at heart,” drinking wine with friends and family, eating good food, telling great stories, helping the poor, sick, and less fortunate, pretending to conduct symphonies, laughing late into the night. By just about anyone’s standard, that’s the mark of a “life well lived.”

But yes, the clock was ticking.

By her mid-80s, Vera was a shell of her former self, and the final decade of her life was hard to watch. She was frail and sick. She still had enough wisdom left to insist that I marry my fiancée, Sandra, but by then music gave her no joy and she hardly got out of her chair; the vibrancy that had defined her was gone.

Toward the end, she gave up hope. “This is just the way it goes,” she told me.

She died at the age of 92. And, in the way we’ve been taught to think about these things, she’d had a good, long life. But the more I have thought about it, the more I have come to believe that the person she truly was had been dead many years at that point.

Growing old may seem a distant event, but every one of us will experience the end of life. After we draw our last breath, our cells will scream for oxygen, toxins will accumulate, chemical energy will be exhausted, and cellular structures will disintegrate. A few minutes later, all of the education, wisdom, and memories that we cherished, and all of our future potential, will be irreversibly erased.

I learned this firsthand when my mother, Diana, passed away. My father, my brother, and I were there. It was a quick death, thankfully, caused by a buildup of liquid in her remaining lung. We had just been laughing together about the eulogy I’d written on the trip from the United States to Australia, and then suddenly she was writhing on the bed, sucking for air that couldn’t satisfy her body’s demand for oxygen, staring at us with desperation in her eyes.

I leaned in and whispered into her ear that she was the best mom I could have wished for. Within a few minutes, her neurons were dying, erasing not just the memory of my final words to her but all of her memories. I know some people die peacefully. But that’s not what happened to my mother. In those moments she was transformed from the person who had raised me into a twitching, choking mass of cells, all fighting over the last residues of energy being created at the atomic level of her being.

All I could think was “No one tells you what it is like to die. Why doesn’t anyone tell you?”

There are few people who have studied death as intimately as the Holocaust documentary filmmaker Claude Lanzmann. And his assessment—indeed, his warning—is chilling. “Every death is violent,” he said in 2010. “There is no natural death, unlike the picture we like to paint of the father who dies quietly in his sleep, surrounded by his loved ones. I don’t believe in that.” 1

Even if they don’t recognize its violence, children come to understand the tragedy of death surprisingly early in their lives. By the age of four or five, they know that death occurs and is irreversible. 2It is a shocking thought for them, a nightmare that is real.

A GOOD LONG LIFEMy grandmother Vera sheltered Jews in World War II lived - фото 3

A “GOOD, LONG LIFE.”My grandmother “Vera” sheltered Jews in World War II, lived in primitive New Guinea, and was removed from Bondi Beach for wearing a bikini. The end of her life was hard to watch. “This is just the way it goes,” she said. But the person she truly was had been dead many years at that point.

At first, because it’s calming, most children prefer to think that there are certain groups of people who are protected from death: parents, teachers, and themselves. Between 5 and 7, however, all children come to understand the universality of death. Every family member will die. Every pet. Every plant. Everything they love. Themselves, too. I can remember first learning this. I can also very well remember our oldest child, Alex, learning it.

“Dad, you won’t always be around?”

“Sadly, no,” I said.

Alex cried on and off for a few days, then stopped, and never asked me about it again. And I’ve never again mentioned it, either.

It doesn’t take long for the tragic thought to be buried deep in the recesses of our subconscious. When asked if they worry about death, children tend to say that they don’t think about it. If asked what they do think about it, they say it is not a concern because it will occur only in the remote future, when they get old.

That’s a view most of us maintain until well into our fifties. Death is simply too sad and paralyzing to dwell on each day. Often, we realize it too late. When it comes knocking, and we are not prepared, it can be devastating.

For Robin Marantz Henig, a columnist at the New York Times , the “bitter truth” about mortality came late in life, after she became a grandparent. “Beneath all the wonderful moments you may be lucky enough to share in and enjoy,” she wrote, “your grandchild’s life will be a long string of birthdays you will not live to see.” 3

It takes courage to consciously think about your loved ones’ mortality before it actually happens. It takes even more courage to deeply ponder your own.

It was the comedian and actor Robin Williams who first demanded this courage from me through his portrayal of John Keating, the teacher and hero in the film Dead Poets Society , who challenges his teenage students to stare into the faces of the long-dead boys in a fading photo. 4

“They are not that different from you, are they?” Keating says. “Invincible, just like you feel. … Their eyes are full of hope … But you see, gentlemen, these boys are now fertilizing daffodils.”

Keating encourages the boys to lean in closer to listen for a message from the grave. Standing behind them, in a quiet, ghostly voice, he whispers, “ Carpe. Carpe diem. Seize the day, boys. Make your lives extraordinary.”

That scene had an enormous impact on me. It is likely that I would not have had the motivation to become a Harvard professor if it hadn’t been for that movie. At the age of 20, I had finally heard someone else say what my grandmother had taught me at an early age: Do your part to make humanity be the best it can be. Don’t waste a moment. Embrace your youth; hold on to it for as long as you can. Fight for it. Fight for it. Never stop fighting for it.

But instead of fighting for youth, we fight for life. Or, more specifically, we fight against death.

As a species, we are living much longer than ever. But not much better. Not at all. Over the past century we have gained additional years, but not additional life—not life worth living anyway. 5

And so most of us, when we think about living to 100, still think “God forbid,” because we’ve seen what those final decades look like, and for most people, most of the time, they don’t look appealing at all. Ventilators and drug cocktails. Broken hips and diapers. Chemotherapy and radiation. Surgery after surgery after surgery. And hospital bills; my God, the hospital bills.

We’re dying slowly and painfully. People in rich countries often spend a decade or more suffering through illness after illness at the ends of their lives. We think this is normal. As lifespans continue to increase in poorer nations, this will become the fate of billions of additional people. Our successes in extending life, the surgeon and doctor Atul Gawande has noted, have had the effect of “making mortality a medical experience.” 6

Читать дальше
Тёмная тема
Сбросить

Интервал:

Закладка:

Сделать

Похожие книги на «Lifespan»

Представляем Вашему вниманию похожие книги на «Lifespan» списком для выбора. Мы отобрали схожую по названию и смыслу литературу в надежде предоставить читателям больше вариантов отыскать новые, интересные, ещё непрочитанные произведения.


Отзывы о книге «Lifespan»

Обсуждение, отзывы о книге «Lifespan» и просто собственные мнения читателей. Оставьте ваши комментарии, напишите, что Вы думаете о произведении, его смысле или главных героях. Укажите что конкретно понравилось, а что нет, и почему Вы так считаете.

x