My 7 Takeaways from Outlive by Peter Attia

Invest in Your Healthspan

14 min readOct 15, 2024

I first heard about Peter Attia from the Disney+ docuseries Limitless with Chris Hemsworth. He famously broke the news to Hemsworth about the latter’s high risk of Alzheimer's disease. Now, the Hemsworth story became international news, but something about Attia’s clear and methodical explanations clicked and I started looking for more content from him. I heard about his forthcoming book, Outlive, and pre-ordered it. A few months later, voila.

Now, let me say from the outset that I felt like Outlive worked for me because our life philosophies seem to align with the author's. I too prefer a proactive approach, bordering with aggressive. That may not work for everyone. Outlive is a deeply personal, and I would say a courageous book.

With that out of the way, let’s proceed. This book is a deep dive into the science of longevity. But Attia is not just trying to get us to live longer. He advocates for a proactive approach to extending both lifespan and healthspan — the years of life lived in good health. Let’s clarify what it means. Lifespan refers to the number of years a person lives, while healthspan refers to the number of years a person lives in good health, free from chronic disease and disability. Healthspan is about quality of life. Attia argues that modern medicine has become too focused on extending lifespan without paying enough attention to healthspan. It is math, really. Would you prefer to live:

a) 90 years, but after turning 60 you are frail and sick for 30 years, or

b) 70 years, but all 70 of those in good health?

In option b, your health span was longer, whereas, in option a, you get a longer lifespan but a shorter health span.

Attia’s goal is to shift the focus towards extending healthspan, so that people not only live longer but also enjoy a higher quality of life in their later years. This requires a proactive approach to health that emphasizes prevention, early detection, and maintaining physical and mental vitality.

Very importantly, Attia’s approach makes it clear there are NO SHORTCUTS. There is no magic pill. You have to put in the work.

Look at the quote the book starts with:

There comes a point where we need to stop just pulling people out of the river. We need to go upstream and find out why they’re falling in — Bishop Desmond Tutu

Obvious? Sure. Do we do this? I wish.

One of the central themes of the book is the “Four Horsemen” — heart disease, cancer, neurodegenerative diseases (like Alzheimer’s and Parkinson’s), and type 2 diabetes (along with related metabolic dysfunctions) because they represent the leading causes of death and suffering in modern society. These chronic diseases are responsible for the vast majority of premature deaths and diminished quality of life. Attia argues that by proactively addressing these Four Horsemen—through lifestyle changes, early detection, and targeted interventions—we can significantly extend our healthspan.

How? In little over 400 pages, Attia goes into impressive level of detail. This article will only scratch the surface, so I thoroughly recommend you read the book. Here we go:

Without much extra introduction, here are my main takeaways from Outlive by Peter Attia:

Medicine 3.0 In Outlive, Peter Attia defines “Medicine 3.0” as a new paradigm of healthcare that focuses on proactive and preventative measures, with an emphasis on extending healthspan. Attia defines Medicine 1.0 as the earliest phase of healthcare, up until the mid-20th century, when medical knowledge was limited, and treatments were often basic or based on trial and error. The main focus was acute care, dealing with injuries, infections, and other immediate life threats. There was also little understanding of chronic diseases. Medicine 2.0 is the modern medical system that introduced antibiotics, vaccines, and better surgical techniques. Still, the approach to health is largely reactive, focusing on diagnosing and treating diseases AFTER they appear. While this has led to major improvements in life expectancy, it falls short in preventing chronic diseases or addressing the root causes of aging-related health issues. Think of it this way: if Medicine 1.0 were the medicine for kings (or whoever else could afford it), Medicine 2.0 would be the medicine for the masses. The problem with anything designed for the masses is that it ignores the individual's unique needs. This is where Medicine 3.0 comes in. As Attia defines it, Medicine 3.0 moves beyond the traditional approaches of Medicine 1.0 and Medicine 2.0 by integrating personalized medicine, advanced diagnostics, and a comprehensive understanding of aging and chronic diseases. It leverages modern technology and data to tailor healthcare to individual needs, aiming to prevent disease before it starts and optimize health over the long term. Attia notes that “medicine’s biggest failing is in attempting to treat all these conditions at the wrong end of the timescale — after they are entrenched — rather than before they take root. As a result, we ignore important warning signs and miss opportunities to intervene at a point where we still have a chance to beat back these diseases, improve health, and potentially extend lifespan.” Medicine 3.0 is about a personalized approach, using data, genetics, and lifestyle factors to create our personal health strategies. However, unless you are filthy rich, healthcare institutions will not be readily providing these services any time soon. This is why, to benefit from Medicine 3.0, a lot is expected from the patient. In Attia’s words: “You must be well informed, medically literate to a reasonable degree, clear-eyed about your goals, and cognizant of the true nature of risk. You must be willing to change ingrained habits, accept new challenges, and venture outside your comfort zone if necessary. You are always participating, never passive.” Or, as Nicholas Nassim Taleb would put it, you have skin in the game.
Centenarian Decathlon. While the general objective is clear, it is helpful to go further in detail. What do you want to be doing in your later decades? My first reaction was — to spend quality time with my family, practice jiu-jitsu, play piano, travel, and be physically and cognitively active. Attia describes the expected deterioration as we age — cognitive decline, decline, and eventual loss of function in our physical body. We lose muscle mass and strength, along with bone density, stamina, and stability. Performing basic tasks becomes a challenge. Some of these tasks — walking without assistance, bathing, and grooming, going to the grocery store, etc., we take for granted at this point in our lives but to be able to perform them in our sixties and seventies, we need to invest in our health now. Here is the list of 10 activities Attia suggests as a starting point to aim at at an advanced age:
1. Hike 1.5 miles on a hilly trail
2. Get up off the floor under your own power, using a maximum of one arm for support.
3. Pick up a young child from the floor.
4. Carry two five-pound bags of groceries for five blocks.
5. Lift a twenty-pound suitcase into the overhead compartment of a plane.
6. Balance on one leg for thirty seconds, eyes open. (Bonus points: eyes closed, fifteen seconds.)
7. Have sex.
8. Climb four flights of stairs in three minutes.
9. Live independently — bathe, groom, clean-up, open a jar, make breakfast, etc.
10. Do thirty consecutive jump-rope skips.
Not a bad list! Again, if your first reaction is — this is all easy, think about being in your 70th. Also, even if you are as young as in your 30s, you may not be able to perform these tasks even now. Think about that. You can add more items to this list. I used Attia’s continuation of the list and here are the next ten items with my modifications:
11. Do 5 pull-ups
12. Do 15 push-ups
13. Do 20 air squats
14. Swim 500 meters in 20 minutes
15. Do a full 5-minute Brazilian jiu-jitsu sparring round
16. Perform a Chopin nocturne on piano
17. Dead hang on a bar for one minute
18. International travel without assistance — carry my luggage, climb stairs, walk long distances, etc.
19. Do a handstand against the wall and hold it for 30 seconds
20. Be able to climb and descend several flights of stairs easily
You can change the list to match your preferences, if you enjoy walking your dog, cycling, playing golf, dancing, or whatever it is. The point of the decathlon, as Attia explains it, is “to redefine what is possible in our late years and wipe away default assumptions that most people will be weak and incapable at that point in their lives.”
Importance of Exercise. I have remained physically active for almost 30 years and preach about the importance of exercise at every opportunity. But even I was shocked to see just how much exercise matters. In Attia’s words: “No other intervention does nearly as much to prolong our lifespan and preserve our cognitive and physical function.” Exercise, according to Attia, is the most potent tool we have for extending both lifespan and healthspan. But not all exercise is created equal. He categorizes exercise into three primary forms: aerobic capacity, strength, and stability. Each has a different role in promoting longevity. Aerobic exercise is critical for cardiovascular health, strength training is essential for maintaining muscle mass and metabolic health, and stability exercises help prevent falls and maintain functional independence in older age. We need to design and implement a well-rounded exercise program that incorporates all three types, essential for long-term health. It appears Attia used to be of the opinion that nutrition is the crucial factor in improving healthspan, but over the years, he has changed his stance and now firmly puts exercise as the number 1 factor in this conversation. Three separate chapters provide specific advice on the types of exercises to do for cardio, strength, and stability — I won’t go into much detail here on two of these — strength and stability. Just a couple of observations: Attia proposes rucking (carrying things while walking) as an excellent way to train strength and stability simultaneously. It is no accident that the military has made this an essential part of its training. For strength, unsurprisingly, advice is to focus on compound movements — pulls ups, rows, deadlifts, squats, single leg variations of exercises for stability. Strength and muscle help us in that we are less likely to fall and injure ourselves; we are also less likely to fall (better balance and body awareness), which means we have an easier time maintaining muscle mass. Last but not least, anything that improves grip strength — which is one of the critical predictors of healthspan.
Importance of Cardiovascular Fitness. I have always hated running. Thanks to BJJ, I now do cardiovascular training for free as part of sparring. But Attia is very convincing in that we absolutely need to include cardio training in our lives. Poor cardiorespiratory fitness carries a greater relative risk of death than smoking — this alone should convince you. Attia focuses on two components of cardio training — aerobic efficiency, with a focus on zone 2 training, and maximum aerobic output, where the focus is on Vo2 max. For Zone 2 training, the recommendation is to start with two 30-minute sessions per week, gradually increasing it to 3 hours per week (or four 45-minute sessions). Attia himself does four 1 hour sessions. The intensity should be at a speed slow enough that you can still maintain a conversation but fast enough so you feel a little strained. Between easy and moderate — a maximum level of effort we can maintain without accumulating lactate. In contrast, the VO2 max training is high-intensity. Attia suggests that a single workout per week in this zone will generally suffice. Four minutes at a maximum pace you can sustain, then go 3 minutes easy for the heart rate to come down below 100 bpm. Repeat this 4 to 6 times and cool down. And, of course, make sure to warm up!
Importance of Emotional Health. Any work and effort you put into achieving physical health and longevity won’t need much if you ignore your emotional health. Paraphrasing Attia’s therapist — none of it matters if your life sucks. Attia clarifies that mental health and emotional health are not the same thing. Emotional health is broader and, therefore, less easily put into a framework. Attia clarifies that you must seek professional help if attempts to handle issues on your own are not working — you can usually tell. Therapy, mindfulness practices, building social connections, healthy sleep, and a robust life philosophy are essential building blocks toward emotional health. This chapter is quite different from others in the book. While in most chapters, Attia provides specific science-based advice, this chapter is very personal. Attia speaks openly about his experience dealing with trauma, how he mishandled it, the consequences of that, and how he had to enlist the help of several professionals to help him heal. He touches upon a lot in this chapter, and the difference between trauma and adversity is one such topic. While going through adversity is usually good for you, going through trauma is much more complex. Attia discusses how the trauma of the parents reflects on the children, particularly how even the well-meaning parents misunderstand children’s reactions and how parents’ trauma affects them. He touches upon how trauma affects relationships. A very important concept is what Attia refers to as the distress tolerance window, which is his mental and emotional capacity to handle stress. It depends a lot on exercise, good sleep, good nutrition, quality time with family, time in nature, deep social connections, recreational activities, etc. — focusing on the things you can control to keep this window as wide as possible. So all these activities not only improve your physical health but also help keep your emotional state healthy. Attia even quotes Seneca in this chapter — points for the philosophy of Stoicism. He also refers to exposing yourself to nature — research shows that fractal geometric patterns in nature can reduce physiological stress.
Nutrition — eat the way that’s right for you. Similarly to the useless strength vs cardio debate, Attia cautions us against getting bogged down in tribalism over what diet is best. There is no conclusive evidence of one diet’s superiority over the others. Attia suggests focusing on “how the combinations of nutrients that you eat affect your metabolism and physiology and how to use data and technology to come up with the best eating pattern for you.” To help get to this nuanced approach, Attia asks three questions:
- Are you under or overnourished?
- Are you under or adequately muscled?
- Are you metabolically healthy or not?
These should help you get to the right eating pattern for you. As I said earlier, Attia used to think that nutrition is the number one component of the fight to improve healthspan. But he no longer does — exercise has taken the top spot. Still, nutrition is important, and Attia’s approach is simple— don’t eat too many calories or too few; consume sufficient protein and essential fats; obtain the vitamins and minerals you need; and avoid pathogens like E.coli and toxins like mercury or lead. Plants are good. Animal protein is safe. Nuts and olive oil are good. Alcohol — no dose of alcohol is healthy. The key question is — whatever your version of a healthy diet ends up looking like — can you stick to it? Because otherwise, diet is useless. What else? Reduce and ideally eliminate junk food. If the diet is high quality, only a slight degree of caloric restriction — simply not overeating — can be beneficial. Overall, reduce carbs. Attia further discusses the science of insulin resistance, metabolic flexibility, the importance of maintaining stable blood sugar levels, and intermittent and prolonged fasting to improve metabolic health and longevity. Here is something that summarizes the wrong approach to nutrition: “If you want to be sick… eat as much as you want, of anything you want, whenever you want. This is called the “standard American diet.”
A science-based approach to health. Firstly, Attia can’t stress enough the importance of early detection in preventing chronic diseases. He advocates for regular screening tests beyond the standard recommendations, particularly for those at higher risk due to genetics or lifestyle factors. Early detection allows for more aggressive prevention strategies, significantly reducing the risk of developing life-threatening conditions later in life. Secondly, Attia is a strong proponent of using biomarkers to monitor health and track progress in a more precise way. He argues that standard health metrics, such as BMI and cholesterol levels, are often insufficient health indicators. Instead, he advocates for a more comprehensive approach to gain a clearer picture and make more informed decisions about interventions and lifestyle changes. Biomarkers that Attia recommends we keep a close eye on are (this list is from https://www.niahealth.co/post/biomarkers-outlive):
- Lipoprotein(a) [Lp(a)]: A type of lipoprotein associated with increased cardiovascular risk. High levels are largely genetic and don’t respond significantly to lifestyle changes.
- Low-density lipoprotein cholesterol [LDL-c]: A type of lipoprotein that carries cholesterol through the bloodstream and is often called “bad cholesterol.” High levels of LDL-C can contribute to the buildup of plaque in artery walls, increasing the risk of heart disease and stroke.
- High-density lipoprotein cholesterol [HDL-c]: A type of lipoprotein often called “good” cholesterol. It helps remove cholesterol from the bloodstream.
- Apolipoprotein B [ApoB]: A protein that is a unique component of many lipoproteins. It serves as a marker for cholesterol-carrying molecules that can lead to artery blockages, increasing the risk of cardiovascular disease. This, Attia highlights, is a critical biomarker that we don’t usually get data on as part of routine testing.
- Triglycerides: A type of fat in the blood that can contribute to arterial plaque buildup when elevated.‍
- Homocysteine: An amino acid the body makes under normal metabolism conditions. Its elevation is linked to cardiovascular disease.
- Uric Acid: A waste product from broken down purines, a substance in certain food and drinks. High levels are associated with gout and may increase the risk of cardiovascular disease.‍
- VO2 max: The maximum oxygen consumption rate measured during incremental exercise. It’s considered one of the best indicators of cardiovascular fitness and overall health. Higher VO2 max is associated with lower mortality risk and better endurance.
- Glucose: A simple sugar processed in the liver and serves as the body's primary energy source. Higher glucose storage levels are affiliated with diabetes and metabolic health risk.
- Insulin: A hormone the pancreas produces that regulates blood glucose levels. Elevated insulin levels can indicate insulin resistance, a precursor to type 2 diabetes and metabolic disorders.
- Hemoglobin A1c: A reflects average blood sugar levels over the past 2–3 months—a useful metric for diagnosing and monitoring diabetes.

Here you have it. Of course, there is a lot more. For example, there is a whole chapter on sleep, but almost all of it aligns with Matthew Walker’s Why We Sleep, which is why very little, if anything, was new for me in Outlive on this subject.

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One criticism. The tests and biomarker monitoring that Attia proposes are not free. Not everyone will be able to afford it all. But knowing what to focus on can save an incredible amount of time and money. BUT — and this is a big but — THE EXERCISE IS CHEAP. It costs nothing to get out and run and very little to do the type of exercise that Attia recommends.

Overall, Attia’s book is about a personalized approach to longevity. There is no one-size-fits-all. Each person’s genetic makeup, lifestyle, and environment are unique; therefore, everyone’s approach to health and longevity should be tailored to their needs. This approach requires a deeper understanding of one’s health through detailed testing and monitoring, allowing for more targeted and effective interventions.

If you liked this read, check out my home page for articles about philosophy, learning, self-improvement, literature, Brazilian Jiu-Jitsu, and more. Here are some you may be interested in: