Although growing older comes with a number of major life changes, science can help inform the things we do in the here in and now to forestall the most serious features of the aging self, promoting healthspan and not just lifespan.
Summer 2021
Build Muscle – Muscle mass is one the best predictors of health and longevity. Muscle tissue is known to release its own chemicals called myokines, which can have benefits that span cognition, immunity and anti-cancer activity. By performing regular, resistance-based exercise that prioritizes strength, we can delay the loss of bone density and risk of physical injuries.
Vitamin D – Commonly known as the sunshine vitamin, vitamin D is in fact a critical hormone that helps maintain healthy bones, boost our immune system and improve our cardiovascular function. With age, the production of vitamin D in the skin can become less efficient, so if we don’t spend enough time outdoors, our risk of vitamin D deficiency may increase.
Neurodegenerative Diseases – One of the most unsettling aspects of aging is the potential for neurodegenerative disease. These conditions are increasingly prevalent in those with diabetes, suggesting that the brain’s blood flow and energy supply may be compromised. Research indicates that regular physical exercise, a healthy whole foods diet and staying intellectually active could at least slow the rate of decline.
Mindfulness – As we get older, major arteries can become thicker and less flexible, leading to increased blood pressure and undue strain on the heart. A regular mindfulness practice such as yoga or meditation has been shown to stem the release of stress hormones like cortisol and adrenaline. By freeing us from this “fight-or-flight” state, this habit can improve blood flow and reduce the risk of heart attack and stroke.
Stay Social – As social animals, maintaining a strong sense of community and close personal relationships into old age are underestimated contributors to longevity. While social isolation in seniors can result in significant physical and mental decline, research suggests that close loved ones offer important emotional support and behavioral modifications that can overcome periods of high stress.
Metabolism – “My metabolism is slowing down!” That’s what we often hear, as the aging body becomes less effective at using energy, placing us at risk of obesity and type 2 diabetes. By maintaining our muscle mass and reducing sugar consumption, we can support hormonal health, preserve our metabolism and keep our vitality into those advanced years. As scientists continue to find ways to extend our lives, paying attention to these keys to healthy aging can help increase the quality of those extra years.
A selection of three essential articles read aloud from the latest issue of The Economist. This week: Biden’s new China doctrine, a jailed ex-president won’t go quietly in South Africa (8:44), and carbon border taxes (14:32).
The Standard Model of particle physics is the most successful scientific theory of all time. It describes how everything in the universe is made of 12 different types of matter particles, interacting with 3 forces, all bound together by a rather special particle called the Higgs boson. It’s the pinnacle of 400 years of science, and gives the correct answer to hundreds of thousands of experiments. In this explainer, Cambridge physicist David Tong creates the model, piece by piece, to provide some intuition for how all of the parts fit together to create the fundamental building blocks of our universe. At the end of the video, he also points out what’s missing from the model, and what work is left to do in order to complete the Theory of Everything.
Race-based medical practises are being challenged more and more, as it becomes increasingly clear they have little basis in science.
The team finds out why adjustments for race and ethnicity are still being made in medicine, despite the potential harm and healthcare implications they cause. It’s been a massive week for the future of space tourism – the team shares a clip of a very excited Richard Branson who’s recent journey into microgravity has set the stage for the launch of Virgin Galactic’s first commercial space flights. The team gives an update on the dramatic heatwave ravaging the US, as more record high temperatures are set, continuing to leave destruction in its wake. They also explain what ‘impact gardening’ is and why it might help us find alien life on Jupiter’s moon Europa, and they share important news on the state of the cosmetics industry in Neolithic times. On the pod are Rowan Hooper, Chelsea Whyte, and Layal Liverpool.
The legacy of near-Earth supernovae, finding mammalian-like hippocampal activity in a food-caching songbird, and how inherited social networks shape spotted hyena society and survival.
Here’s a question that’s been on my mind and perhaps yours: Is the US healthcare system expensive, complicated, dysfunctional, or broken? The simple answer is yes to all.
Below are 10 of the most convincing arguments I’ve heard that our system needs a major overhaul. And that’s just the tip of the iceberg. Remember, an entire industry has evolved in the US just to help people navigate the maddeningly complex task of choosing a health insurance plan.
Financial burden. High costs combined with high numbers of underinsured or uninsured means many people risk bankruptcy if they develop a serious illness. Prices vary widely, and it’s nearly impossible to compare the quality or cost of your healthcare options — or even to know how big a bill to expect. And even when you ask lots of questions ahead of time and stick with recommended doctors in your health insurance network, you may still wind up getting a surprise bill. My neighbor did after knee surgery: even though the hospital and his surgeon were in his insurance network, the anesthesiologist was not.
Access is uneven
Health insurance tied to employment. During World War II, healthcare was offered as a way to attract workers since employers had few other options. Few people had private insurance then, but now a layoff can jeopardize your access to healthcare.
Healthcare disparities. The current US healthcare system has a cruel tendency to delay or deny high-quality care to those who are most in need of it but can least afford its high cost. This contributes to avoidable healthcare disparities for people of color and other disadvantaged groups.
Health insurers may discourage care to hold down costs. Many health insurance companies restrict expensive medications, tests, and other services by declining coverage until forms are filled out to justify the service to the insurer. True, this can prevent unnecessary expense to the healthcare system — and to the insurance company. Yet it also discourages care deemed appropriate by your physician.
The twists and turns of the online brokerage’s path to a public offering The brokerage app Robinhood has transformed retail trading. WSJ explains its rise amidst a series of legal investigations and regulatory challenges as it looks forward to its IPO. Photo illustration: Jacob Reynolds/WSJ
Rising in popularity in the 1950s and 1960s, the convertible car is an automotive American icon. It was a vehicle meant for leisure and fun. Some of the most iconic models throughout history were convertibles, such as the Chevrolet Corvette and the Ford Mustang. However, in the last few years, convertibles have been slowly declining in popularity. Along with rising prices, American car buyers, especially those with children, value practicality and functionality over looks and leisure, leading their interest towards SUV’s and midsize sedans. In 2021, convertibles make up only 0.46% of new car sales. Can the iconic design stand the test of time?
Why heat waves disproportionately impact minorities in US cities, and the researcher that critiqued his whole career on Twitter.
In this episode:
00:45 How heat waves kill unequally
Researchers are beginning to unpick how historic discrimination in city planning is making the recent heat waves in North America more deadly for some than others.
When researcher Nick Holmes decided to criticise his past papers, in 57 tweets, he found the reflection enlightening. Now he’s encouraging other researchers to self-criticise, to help speed scientific progress.
We discuss some highlights from the Nature Briefing. This time, Richard Branson’s commercial space flight, and the Maori perspective on Antarctic conservation.
It’s time we took a break from open highways and enjoyed open seas instead. In this episode we will explore the world of extremely overpowered speed boats and magnificent luxury yachts, that just like supercars defy any limits in performance and opulence. So as always let’s put on our finest home garments and enjoy window shopping of the most anticipated yachts in 2022.
News, Views and Reviews For The Intellectually Curious
