Does the ideal diet change across the lifespan? I couldn’t help circling back to this idea regularly while writing this article. In the last article on this subject of growth promotion and better aging, we discussed the concept of antagonistic pleotropy, which suggests that natural selection may favor genes that increase reproductive potential – even at the expense of long-term vitality and longevity. But can we harness an understanding of this idea to alter how we live in our post-reproductive window, to stay younger and live longer? In my latest post, I address just that – lifestyle modifications that may not only be effective to help us surviving longer, but also to live better along the way.
All posts by Dan Pardi
What is attention deficit disorder?
In this latest episode of HumanOS Radio (iTunes, Stitcher, YouTube) I speak with Professor Stephen Hinshaw of UC Berkeley. Much of his research has focused on the causes of and treatment for hyperactivity and similar behavioral problems in children and adolescents.
In our chat, we discuss the background of ADHD, how it was historically characterized and diagnosed, and some of the many theories of what causes the condition. Then we will explore some of the most common treatments, as well as some of the unique challenges associated with understanding and resolving mental illness in general.
Is sitting really the new smoking? This idea became popular a few years ago and research supports that, indeed, too much sitting really is bad for us. But, as I discussed with Professor Matthew Buman, while no amount of smoking is healthy, sitting is a health behavior, it just becomes problematic when we do it too much of it.
In the most recent episode of humanOS Radio, I speak with Professor Travis Saunders of The University of Prince Edwards Island. Travis is also the founder the Sedentary Behavior Research Network, which is how I learned of his work. Much of his research looks at the influence of sitting behavior on health in both children and adults. In order to move the needle on this subject, he looks at the topic from a variety of research angles ranging from interventions done in the lab to population-level epidemiological studies and systematic reviews. In our discussion, we explore what’s known and not known on the subject, and also practical ways to find the sweet spot for daily standing time.
Brainy Beds? Professor David Samson on Sleeping Platforms, Sleep Quality, and Thinking Speed, plus News!
Did our brains evolve as they have due to how we slept? In part, likely yes. In this episode of the humanOS Radio podcast, I speak with Professor David Samson about his research looking at primate sleeping platforms and their potential role to increase the cognitive abilities of certain great apes beyond the capacities of other primates. How does this connection work? The primates who create more comfortable beds for themselves appear to achieve substantial amounts of deep and REM sleep over the night. This is turn may have lead to the expansion of cognitive abilities over time. Can you benefit from the information shared in this discussion to improve your own sleep?
Every day, we collect the most interesting health and biology news out there, and post it on our Facebook Fan Page and on Twitter. But news and social media move fast, and it’s hard to keep up with everything that comes out every day. Here is a handy roundup of all of the most compelling stories we encountered this week – in case you missed something awesome.
This week, we covered information related to 1) nutrition, 2) sleep & circadian rhythms, 3) physical activity, and 4) aging, fasting & inflammation.
When the system in our body that controls the timing of our physiology becomes uncoordinated or misaligned, bad things happen. This can happen in several ways.
The most well-understood way is due to big fluctuations in the timing light exposure from day to day. This is why Apple recently introduce night shift to help limit the impact cell phones can contribute to this issue. But big fluctuations in the timing of light exposure is not the only way to misalign our rhythms. The type and timing of dietary fat also impact’s this system.
We do not enter into the world with infinite knowledge of ourselves and our surroundings. We don’t have knowledge or skill to survive, to dance, or to do martial arts with grace and efficiency. We don’t know enough about ourselves or know how to interact best with different types of people we encounter. We don’t know how to accelerate our ability to get better at something. We are born, however, with the capacity to learn and to remember, and by virtue of this skill, we have an incredible potential to do great things.
Professor Marcos FrankToday, important stuff happened to you. Tonight, when you sleep, your brain will extend the process of turning that stimulation – the sites, sounds, thoughts, emotions, facts, etc. – into memories that you can access at a moments notice in the future. It’s amazing when you think about it: experiences, facts, skills, and even thought patterns become a part of who we are. How much do you know now that you didn’t know 1o to 15 years ago, or even last week, last month, or yesterday? The process of accumulating information, and accessing when needed, is so routine it’s easy to forget that something is going to make it possible. As it turns out, sleep plays a vital role in the formation of certain types of memories. In this interview, I speak with someone who has made, and continues to make, significant contributions to help the world better understand how all this magic works. My guest is Marcos Frank, Ph.D., who is the Interim Chair of the Department of Biomedical Sciences in the Elson S. Floyd College of Medicine at Washington State University. I hope you enjoy this discussion as much as I did.
Around this time of year, much of the world is advancing their clocks by one hour to make efficient use of seasonal daylight. Americans switched to Daylight Savings Time last week, and this week Europeans will revert to Summer Time.
When this happens, we all “lose” an hour of sleep, because we have to get up and get things done an hour earlier than we have been. This is in relation not just to the light and dark cycles of the day, but also to our body clocks.
One hour sounds like a small change, but it can make a big difference in how we function, at least in the short term. For example, data from the past two decades shows that there is a statistically significant spike in the number of car wrecks on the Monday immediately following the shift to Daylight Savings Time in the US.
As we all adjust to the time change, it’s worthwhile to consider how other aspects of our lives can sway our circadian rhythms. Circadian clocks govern the rhythms of sleep and activity in virtually all animals and are responsive to a variety of stimuli like light and stress. Research is starting to suggest that our eating patterns – specifically when we eat – can also have a pervasive impact.
I am very happy to announce our new podcast, humanOS Radio. The aim is interview three categories of people: 1) Researchers whose work informs us about some aspect of how we live, 2) Entrepreneurs who are translating science into solutions, and 3) Investors making bets to predict (and support) the major future influencers on health. The format will be flexible, but most shows will around 30 minutes or less. I think the best way to get a sense of what humanOS will deliver is to listen to an episode or two. Without further ado, please find my conversation with Matt Buman, PhD., who is an Assistant Professor in the School of Nutrition and Health Promotion at Arizona State University.
In this series of articles, we look at the effects of exercise on the brain, including how it helps us maximize our capacity to learn. In the previous post, we saw how moderate-intensity exercise helps enhance cognition by increasing brain blood flow. However, this effect works in the short term, as long as we continue to maintain the right exercise-intensity level: Not intense enough and we don’t augment blood flow to the brain; too intense and blood flow returns to baseline flow levels all while the demands of exercise require us to increasingly focus on the exercise itself (not the problem you’re trying to solve in your head).
So, an interesting question to ask is this: can exercise induce lasting improvements in cognitive ability? Current research suggests that the answer to this question is yes. Exercise promotes an increase in the levels of certain substances that enhance the brain’s capacity to acquire and retain new information.