Tag Archives: Life Span

Post #50 – How to optimize your health by maximizing your telomeres?

21 Monday Mar 2016

Posted by in Aging, Life-Span, Living to 120, Nutrition, Optimal Health, Uncategorized

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What in the world is Telomeres? – you say

Well, if you have not heard of the word Telomeres, I will explain it here, since it is likely that you will be hearing about it more and more.  Especially, if you are interested in optimal health, living long and living health.

So, first here are some useful terms.

What is Telomere?

Telomeres are disposable buffers at the ends of chromosomes which are truncated during cell division. Their presence protects the genes before them on the chromosome from being truncated. During the process of each cell division, the telomere ends become shorter.

Hayflick Limit

An American scientist Leonard Hayflick established limits to cell replication what is now called Haflick Limit. The Hayflick limit is the number of times a normal human cell population will divide until cell division stops. Empirical evidence shows that the telomeres associated with each cell’s DNA will get slightly shorter with each new cell division until they shorten to a critical length.

Most cells will divide between 50 to 70 times before they cannot divide any more.

Role of Telomeres in Cellular Aging

As Hayflick first demonstrated, human cells have an inborn “counting mechanism” that tells them when to senesce, or stop dividing: Each time a cell replicates, the ends of each chromosome, i.e., telomeres, get shorter, and once the telomeres get too short, they trigger a “senescence program” that arrests the cell’s growth.

In short, telomeres represent body’s clock that determines our life-span and our health span.

Telomerase to the Rescue!

Telomerase is an enzyme that adds length back to the end of telomeres.  In a simple leap of logic, you can quickly figure that telomerase enzyme is an antidote to shortening of the telomeres.

As you can also guess things are probably not that simple.  They never are when it comes to human biology. But for this brief blog post, I will keep it simple.

So, with this premise of telomeres determining when cells say “uncle”.  And, Telomerase offering an antidote, race is on for researchers and entrepreneurs on many fronts.  Numerous questions are being asked and some have even been answered:

  • How do you measure telomeres inexpensively?
  • Do telomeres really correlate with one’s biological age?
  • Does telomere length account for life styles that have been known to determine one’s health span and lifespan?
  • What factors stimulate telomerase activity? Can we measure that?
  • What about the role of telomerase in cancer, where cell replication goes on without any limit?
  • And, so on and so on..

Some hard answers have emerged, well-rooted in hard science.  On the other hand, other answers are preliminary and people are making wild leaps of logic to get to the market first with commercial products and services.

Measuring Telomeres

Several companies now offer services to measure telomeres. For example, Titanovo, Inc., SpectraCell Laboratories, Telome Health, Inc.,  Telome Home.  Basically, you send them blood or swab and they will  send you your telomere measurements.

My experience

I recently got my telomeres measured by Titanovo, Inc.

I signed up online. They sent me a kit.  I swabbed inside of my cheeks and mailed it back.  I also filled in a lifestyle survey on their website they use to correlate the results with lifestyle.

Few weeks later, they posted my results on their website.  The following pictures represent result I received.  (You can click on these to enlarge and make them readable)

Titanovo profile 3-2016_Page_1

Titanovo profile 3-2016_Page_2

What do my results mean?

Here is my take away.  My relative telomere length is 0.62, which if you interpolate on one of the charts that means my telomere corresponds to a 48 year old male. 13 year younger biologically sound pretty good to me!

I reported my diet as vegetarian.  If I were to change my diet to vegan, according to the last chart, my telomere length could be 0.67. That represents an additional opportunity for 8% advantage in terms of biological age.  8% increase in lifestyle is pretty significant to me.

Since I just started experimenting with a vegan diet about 3 week ago, I will be interested in retesting the telomere length in a year to see if the results correspond to what Titanovo is forecasting.

Titanovo sells bundles of multiple kits, so people can play with their lifestyles choices and then see the impact, in say 3 months at a time.

Bottom Line

  • This area of telomere and measuring impact of lifestyle choices through measuring telomere is quite exciting.
  • A lot of research is going on in both gaining fundamental understanding as well designing interventions that could potentially defeat body’s lifespan clock.
  • Sound like pretty cool stuff to me, if this works as advertised.
  • I bet we will be hearing a lot about this topic, so stay tuned.

What is your perspective of this topic?

I would love to hear and learn from you.

Please click on the “Comments” link to share you thoughts.

 

 

 

 

 

Post #41 – So, how to measure how close to optimal is your health? Or, how quickly are you aging?

19 Sunday Jul 2015

Posted by in Aging, Dying, Life-Span, Living to 120, Mental Health, Nutrition, Optimal Exercise, Puposely Living, Vitality, wellness

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“How old are you?” someone asks. Number of years since birth is the generally the answer – that is your Chronological Age or CA.

But how hold do you feel? How old do you act? How old do you look? That is your Biological Age or BA.

Wouldn’t it be nice to actually be able to measure your biological age?

CA and BA is the difference between being 40 year old and going on 60. Or, may be being 60 year old and going on 40.

Wouldn’t it be more useful to have a single number like BA, than understanding individual factors like your total cholesterol, HDL, A1c, VO2 Max, etc?

Recently, in the media there has been a buzz about a recent research published by scientists led by Duke University School of Medicine about measuring biological age. For example, see the article in WSJ: How Quickly Are You Growing Old?

Now there are a quite a few websites, where you answer a bunch of question and they will tell you, your biological age as compared to your chronological age.

For example, here are three such sites, I tried (my CA is 60.9 years):

http://www.biological-age.com/ calculated my biological age as 36

https://www.sharecare.com told me my BA was 53.6.

http://www.growyouthful.com/gettestinfo.php said my BA was 46.

Each of the sites followed up with advice and helpful hints on what I could start or stop doing to further increase my expected health and lifespan.

Unfortunately, none of these websites show exactly what they do with the information you provide and how they arrive at the number they call Biological Age.

But this recent study, “Quantification of biological aging in young adults”, by Daniel W. Belsky et al, is very rigorous treatment of this subject and gives you all the details behind the curtain. And, for me, these details are not only fascinating but actually quite useful to understand what matters for biological age to start diverging from chronological age. In other words, what slows down or speed up aging.

The study calculated the aging rate of 954 men and women—taking various measurements of their bodies’ health—when they were each 26, 32 and 38 in chronological years. By analyzing how these measures changed over time, the researchers were able to see who aged faster and who slower than normal.

To measure the pace of biological aging, which the study defined as the declining integrity of multiple organ systems, the researchers relied on 18 separate biomarkers, summarized in figure below.

These ranged from common measures such as HDL-cholesterol levels and mean arterial blood pressure to more obscure ones like the length of telomeres—the protective caps on the ends of chromosomes that shorten with age.

Go on in Years

Chronological age of all participants was 38 years. However, researchers found that the biological ages varied from 26 years to 60 years.

For measuring how fast people aged, they calculated aging over 12 years. About 30 percent aged biologically one year for every calendar year. There were those who aged as much as 3 years for every calendar year. And, there were four members of the group who aged not at all or actually got biologically younger during the 12 year period.

BOTTOMLINE:

Finding one’s Biological Age is a fascinating concept and can be very useful in optimizing health and life span. However, this is not an exact science just yet, although good strides are being made in research.

However, if you want to focus on living optimally, you can focus on changing your lifestyle to optimize the basic 18 or so biomarkers used in this study. Most of these can be impacted by lifestyle choices. Only 20% depend upon genetics.

Proper food, hydration, exercise, supplements and medical care are the key methods to managing these primary biomarkers.

Websites that compute biological ages also suggest additional actionable items that seem to strongly correlate to optimal health span and life span. These include:

  1. Optimal sleep (7 to 9 hours)
  2. Reduced stress (meditation, perspective management)
  3. Reduced exposure to toxins (organic food, reduced use of chemicals, clean water)
  4. Increased social contact (having friends, family, living with a life partner)
  5. Purposeful living (satisfying work, hobbies, social endeavors)

What is your take on this subject?

Please feel free to leave comment to share your perspective.

Post #16 – What is stress really and why is it bad for longevity and health?

22 Sunday Jun 2014

Posted by in Aging, Biomarkers for Stress, Life-Span, Optimal Health, Stress

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Stress has become such a common buzz word. We all talk about it. We generally know it is bad for us. It is constantly in the news.

There are exceptions though. Some believe that stress is good, arguing that if you take away the stress you take away the motivation and drive.

But whenever I get into conversation with someone and start to dig a little deeper with questions like, “So, what do you think is stress?” “Why do you think that stress is bad?” Why do you think it is good?” Or, “How do you deal with stress?” The subject becomes very squishy, very quickly.

Even Hans Selye, the person who originally coined the term stress in 1936 in the context of health and spent life-time studying it, at one time threw up his hands and declared, “Everyone knows what stress is, but no one really knows.”

So, let us take the first question first, what is stress, any ways.

Webster’s Dictionary defines Stress as “a state of mental or worry caused by problems in your life, work, etc.”; or, “something that causes strong feelings of worry or anxiety”

According to the American Institute of Stress, another popular definition of stress is, “a condition or feeling experienced when a person perceives that demands exceed the personal and social resources the individual is able to mobilize.”

Few useful concepts, while talking about stress are:

Acute Stress: Fight or flight. The body prepares to defend itself. It takes about 90 minutes for the metabolism to return to normal when the response is over.

Chronic Stress: The cost of daily living: bills, kids, jobs…This is the stress we tend to ignore or push down. Left uncontrolled this stress affects our health- our body and our immune system. This is the type of stress that causes wear and tear on our bodies and can impact health and longevity.

Eustress: “Good stress” in daily life that has positive connotations, e.g., marriage, promotion, child birth, winning money, new friends, graduation

Distress: “Bad stress” in daily life that has negative connotations, e.g., divorce, punishment, injury, negative feelings, financial problems, work difficulties.

So, from  the point of view of theses definitions, the stress is really a subjective concept, based on how we perceive a thing or an event. The same event or activity, say a roller coaster ride, could be a eustress (good stress) for one person and distress for another. This is why psychologists or mental health practitioners often get involved in diagnosing and helping cope with chronic stress.

Although stress is a subjective concept, the impact on our bodies is often very objective and real. We have all experienced the rising of hairs on the back of the neck, the sweats, tension in our gut, racing of heart, dilating of pupils, and pumping of blood in our face, arms and legs.

As the following figure shows, stress starting in mind, causes, a chain reaction of neurological, chemical and biological processes. (Figure is taken from a presentation,Why Stress Is A Far More Important Cause Of Coronary Disease Than Cholesterol, by Paul J. Rosch, M.D., F.A.C.P. President, The American Institute of Stress)

Effects of Stress

Physiological effects of most acute stress events subside about 90 minutes after the conclusion of the stress event. Body returns to normal homeostasis or biological equilibrium.

However, it is the repeated acute stress events or chronic stress that are real cause for concern and take toll on our bodies. The results of such chronic stress can be objectively measured from a host of biomarkers that include (from Biomarkers of Chronic Stress, by Laalithya Konduru):

  • Metabolic Biomarkers: Cholesterol, Albumin, Waist-to-Hip Ratio, Glycosylated Hemoglobin
  • Immunological Biomarkers: IL-6, TNF-α, CRP, IGF-1
  • Neuroendocrine Biomarkers: Cortisol, DHEA, Adrenaline, Noradrenaline, Dopamine, Aldosterone
  • Certain Metabolites, chemical figure prints of cellular processes
  • Modifications in Mitochondria
  • Induction in the Brain of DRR1, a tumor suppressor gene

Most of us recognize some of these biomarkers. Others are quite esoteric. In any case, from this list, it does not take a neuroscientist to figure out that chronic stress can mess with a number of things that are key to our health: insulin, cholesterol, hormones, our immune system, can cause inflammation, reduce energy level in the body and impact working of our brain.

Looks like a real important subject to me, if we want to live healthy life free of chronic diseases for an optimal life span.

What do you think? How do you fee about stress?

In a future post, I would like to explore some anti-dotes to chronic stress

Post #7 – Can biomarkers help in the quest for vitality and longevity?

14 Monday Apr 2014

Posted by in Aging, Life-Span, Living to 120, Vigor, Vitality

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How do we die and how do we lose vitality questions so far have focused my attention on the hurdles to overcome. Some of these have to do with challenges that shorten or bring end to our lifespan. Other items are “diseases” that can decrease our vitality and vigor.

All of these items are, of course, important. For the moment, however, let me step away from these hurdles and reframe the questions.

Let us say, I don’t really have any disease, but I want to live a lifestyle to achieve the optimal health and lifespan. How can I objectively assess where I am presently and then either maintain or improve from here? In other words, how to pursue living an optimal health and vitality, not merely trying to be disease free?

Study of Biomarkers has been an area of aggressive research and pursuit in vitality and aging since the 1980’s.

Biomarkers (short for biological markers) are biological measures of a biological state. By definition, a biomarker is a characteristic that is objectively measured and evaluated as an indicator of normal biological processes, pathogenic processes or pharmacological responses to a therapeutic intervention.

In the context of aging, an important focus for biomarkers has been on finding “the clock” that potentially ticks away our lifespan. Discovery of telomere as a potentially genetic clock is one example of a biomarker that won Elizabeth Blackburn of the University of California San Francisco a Nobel Prize. More recently, Steve Horvath of UCLA has introduced another important biomarker to measure human aging through epigenetic signatures.

Both of these works have sparked fascinating research into areas of aging and extending lifespans. I would like to explore these topics in future blog posts.

On the other hand, for vitality, William Evans, PhD, and Irwin H. Rosenberg, MD, professors of nutrition and medicine, respectively, at Tufts University introduced a concept of biomarkers back in 1991 through their book Biomarkers (Simon and Schuster, 1991), updated in their book, BIOMARKERS: The 10 Keys to Prolonged Vitality (Simon and Schuster, 1992) and more recently updated in the Tufts University Health and Nutrition Letter.

In these publications, Evans and Rosenberg isolated the following signposts of vitality that can be altered for the better by changes in lifestyle:

  1. Muscle Mass
  2. Strength
  3. Basal Metabolic Rate
  4. Body Fat Percentage
  5. Aerobic Capacity
  6. Blood-sugar Tolerance
  7. Cholesterol/HDL Ratio
  8. Blood Pressure
  9. Bone density
  10. Ability to regulate Internal Temperature

These same 10 biomarkers keep showing up everywhere in preventative care, in strength training, in other training programs, in nutrition/diet plans and so on.

Additionally, other important biomarkers I have seen show up in various medical and scientific literature and studies on health, vitality and longevity are:

  1. Stress
  2. Inflammation
  3. Sleep
  4. Body’s pH
  5. Flexibility
  6. Balance
  7. Musculoskeletal alignment
  8. Physical and mental reaction time

So, the way I see it is this: the goal of achieving optimal health and lifespan should focus on developing lifestyle that optimizes these objectively measureable / observable biomarkers.

Any exercise plan, nutrition plan, lifestyle adaptations, and any medical program for achieving optimal vitality and lifespan thus must be measured against these criteria.

What do you think?

Do you know of other biomarkers that we can impact that are important for attaining optimal vitality and lifespan?

Post #5 – Why do I want to live to 120?

31 Monday Mar 2014

Posted by in Aging, Life-Span, Living to 120, Uncategorized

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As I start this conversation of purposely living to 120, I usually get a wide variety of reaction from people. Frankly, the one that took me by surprise the first time I heard, and, to some extent, still does is, “Why would you want to live to 120 even if you could?”

Now, I have to admit, before I started to get into such conversations, I just naively assumed that most people wanted to live as long as possible. After all, just look at the heroic efforts doctors, hospitals and patients put up to extend life just by few years, months and often even days.

When I was discussing this topic with my father-in-law recently, he remarked, “I will be happy to die at 90.” Then he quickly calculated and figured out that that was only 13 years away. So, he immediately added, “Wait a minute. That seems too soon. Scratch that thought. Let us make it 95.”

My mother-in-law on the other hand queried, “I’m wondering if anyone has interviewed those very old people to determine if they would have chosen to live to 120 or more, had there been a choice. Also curious to know why you would make that choice [of living to 120], since the possibility of your peers and loved ones not being with you seems to be very real. Or do you anticipate the “community” being a replacement for others?”

According to a detailed survey Pew Research Center conducted last year, comments of my in-laws are well represented in the mainstream of views across the US. As the following figures show, only 38% of people in the US would want to live to 120 and most Americans expect to live to between 85 to 90 years.

Figure 5-1

Figure 5-2

Only about 4% feel that ideal lifespan is between 100 and 120 and another 4% think it is over 120.

Figure 5-3

A majority of people think that living to 120 will be a bad thing for society.

Figure 5-4

A surprising result survey researchers noted is that most of these measures are fairly constant across various religions, gender, education or political party affiliations in America.

In my conversations, I have found that three reasons come up most often when people mull over if they personally want to live to 120:

  1. What would be the condition of their personal health? Will it be joyful living or a painful living?
  2. Will they have financial means to sustain themselves? Being broke is not much fun.
  3. Will their peers and loved ones be around? If not, will it be worth living?

As for myself personally, I feel that there are two major objectives of life: Growth and Contribution.

Thus my rationale for wanting to live to 120 is to simply maximize the time I have available to grow and contribute. Additionally, purposely living to 120, learning some things along the way, sharing with others as I learn, seem to fit in with my personal growth and contribution model of life.

In this sort of context, I see the three common objections cited above, as challenges to overcome as I pursue the goal of purposely living to 120. Moreover, not only I want to live to 120, but I wish to do it healthfully, purposefully and joyfully.

Looking at it another way, I feel, if it is okay to expect to get to 90 healthfully, purposefully and joyfully, why not to 120?

And, of course, as my mother-in-laws suspected, a key purpose for me to write this blog and engage in conversations with family, friends, loved ones is to motivate them and along the way find others who would want to share this journey together.

How do you feel about living to 120?

What do you think it would take to live to 120 healthfully, purposefully, and joyfully?

Please leave comments to this post. I and others following this blog would love to hear your perspective!

Post #4 – Is it even possible to live to 120? – Part II

23 Sunday Mar 2014

Posted by in Dying, Life-Span, Living to 120

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In the last post on this topic, I concluded that

“As an optimist, when I look at this data, it looks very encouraging to me. First, it is definitely viable to live to 120. It has already been done! Like the four-minute mile, someone has already shown the way.

Second, an increasing number of people are approaching that age with an increasing rate. So, at this rate, I expect by the time my time arrives, dying at 120 will be as routine as dying at 100 today! It might not be very common, but it might not be that rare.”

While I make this informal and what seems like a rather obvious deduction from the data, some folks disagree.

James F. Fries and Lawrence M. Crapo in their book on Vitality and Aging make a compelling argument: while life expectancy has been increasing over the last many decades life-span has been fixed (for all practical purposes – increasing only by 0.1 year per century).

So, intuitively, the chart below may be how one would be tempted to guess the shape of life expectancy curves.

Figure 1
However, they argue, that it is the chart below that corresponds to the reality.

Figure 2

Thus according to their conclusion, while on an average humans are living longer and longer, we are still stuck at dying by the age of 100.

Presenting the data from another perspective in the chart below, as we graph number of deaths against age of death, we observe a normal or Gaussian distribution around certain age at which number of deaths peak. As the life expectancy keeps increasing the curve would look like the IDEAL curve below.

Figure 3

And, as that happens, graph of percent survial rate against age will become “rectanguar” as shown below.

Figure 4

This implies that as we conquer chronic diseases, we will live a healthy long life after which we will succumb very quickly to the forces of nature, within the bounds of a very few years. And, that will define an ideal “natural” death. As we hit certain time limit, all of the cells in the body may burst together like soap bubbles.

Fries and Crapo wrote their book in 1981. So I thought, with all the new research in the last 30+ years, maybe they have changed their mind.

In a more recent review article in the Journal of Aging Research, Compression of Morbidity 1980–2011: A Focused Review of Paradigms and Progress, James F. Fries, Bonnie Bruce, and Eliza Chakravarty reassert the same conclusion and buttress it with more recent studies.

I really like most everything else they assert, derive or conclude in that book- which I would like to talk about in a different post. However, I am personally not sold on this idea of fixed life-span.

It makes me quite uncomfortable. Yeah, you guessed it. After all, my goal is to purposely live to 120!

What do you think?

Have you seen any data, studies or analysis that contradicts this theory about fixed life-span?

Post #1 – Questions I have been pondering lately..

13 Thursday Mar 2014

Posted by in Living to 120

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May be it is because I am turning 60 this year or may be it is something else… These are the questions I have been pondering lately:
• What is the object of this game of life?
• How do people die?
• How do people lose vitality?
• What would it take to have a life-span and a health-span of 120?
• How do I want to live the next 60 years of my life?
• How do I contribute at a level that is worthy of my life?
• How do I make a major contribution to preventative healthcare – the area that gets my juices flowing?

In finding answers to these questions, I have been reading whatever I can lay my hands on and talking to whoever would talk to me on this topic.

One of my recent thoughts has been to may be to find other kindred spirits – people who are searching for answers to these or similar questions – and may have even already found some answers!

Also, I am going to use this blog to reflect upon what I come across. Through these reflections I would like to share what I have learned and learn from others.

So, I would love to hear your comments:

Are you in pursuit of a goal to live to 120?

Do you wonder what it might take to purposely live a life of vigor to the age of 120?