#63 - AMA #7: Exercise framework, deadlifting, lower back pain, blood pressure, nootropics, CGM, and more
In AMA #7, Peter Attia, MD, and Bob Kaplan discuss preventing nighttime urination, Peter's note card system, and understanding scientific studies. They also touch on obtaining a CGM, blood pressure, nootropics, concussions, exercise for healthspan, and back strength.
Deep Dive Analysis
4 Topic Outline
Introduction to AMA #7 and podcast format
Strategies to prevent nighttime urination
Peter Attia's personal note card organization system
Approaching scientific studies and media interpretations
2 Key Concepts
Antidiuretic Hormone (ADH) / Vasopressin
ADH, also known as vasopressin, is a hormone that helps the body retain water and reduce urine production. Alcohol inhibits ADH, causing it to act as a diuretic, which increases the need to urinate.
Hyponatremia
Hyponatremia is a condition where sodium concentrations in the blood become dangerously low. This can occur from excessive water intake (over-hydration) or overuse of vasopressin, leading to osmotic imbalances that are particularly harmful to the brain.
4 Questions Answered
Initial steps include not drinking liquids, especially alcohol, close to bedtime, as alcohol inhibits antidiuretic hormone (ADH) and acts as a diuretic. Keeping a journal to track liquid intake and voiding patterns can also be helpful.
A simple way to avoid a hangover is to not drink alcohol the night before.
Peter uses a leather pouch with 3x5 cue cards of different colors: white or green for daily tasks, pink for weekly tasks, orange for patient-specific items, and another white card for long-term personal tasks.
Hyponatremia is a condition where sodium concentrations become too low, often caused by over-hydrating (e.g., during a marathon) or excessive use of vasopressin, leading to dangerous osmotic mismatches, especially in the brain.
11 Actionable Insights
1. Limit Bedtime Liquids
To prevent frequent nighttime urination, avoid drinking liquids, especially alcohol, in the proximity of bedtime, as alcohol acts as a diuretic by inhibiting ADH.
2. Avoid Alcohol for Hangovers
To avoid a hangover, do not drink alcohol the night before.
3. Investigate Prostate Size (Men)
If common measures fail to prevent nighttime urination, men should investigate prostate size and perform a post-void residual test with a doctor to ensure the bladder is fully emptying.
4. Consider Vasopressin for Urination
As a ‘hack’ to prevent nighttime urination, one can take 0.2 milligrams of DDAVP or vasopressin before bed, but this requires a doctor’s prescription due to the risk of hyponatremia.
5. Daily Task Note Card
Use a white or green 3x5 note card as a ‘daily list’ for tasks to complete today, carrying over unfinished but relevant items to the next day’s card.
6. Weekly Task Note Card
Use a pink 3x5 note card for a ‘weekly list’ of tasks that must be completed by Sunday, redoing the card each week.
7. Track Note Card Progress
Track task progress on note cards using a system of boxes: an empty box for undone tasks, a single hash for in-progress tasks, and a fully hashed box for completed tasks.
8. Patient-Specific Note Card
Use an orange 3x5 note card for patient-specific tasks, not reusing the back of the card.
9. Long-Term Personal Note Card
Use a white 3x5 note card for long-term, random personal tasks that don’t need to clutter the weekly list, moving items to the weekly list as they become relevant.
10. Maintain “Dumb Things” List
Maintain a dedicated note card to list ‘stupid things’ or ‘dumb things’ you like to do, adding new items as you think of them.
11. Subscribe to Attia’s Newsletter
To stay updated on longevity, science, performance, and sleep, sign up for Peter Attia’s weekly email newsletter which highlights interesting papers and updates.
3 Key Quotes
What I tell them is, don't drink the night before.
Bob Kaplan
I have a purple card. It's called my people to kill list.
Bob Kaplan
I hope I'm not on that list.
Peter Attia
3 Protocols
Initial Steps to Prevent Nighttime Urination
Peter Attia- Do not drink liquids in the proximity of bedtime.
- Avoid drinking alcohol, as it inhibits antidiuretic hormone (ADH) and acts as a diuretic.
- Keep a journal to track liquid intake, voiding frequency, and timing.
Medical Investigation for Persistent Nighttime Urination
Peter Attia- Investigate prostate size in men (and similar bladder emptying issues in women).
- Measure post-void residual: perform a test where the bladder is filled, then voided, and an ultrasound checks for remaining urine. If everything is working correctly, very little urine (less than 30 cc) should remain.
- Consider taking vasopressin (DDAVP) 0.2 mg before bed, but only under a doctor's prescription due to the risk of hyponatremia.
Peter Attia's Note Card Organization System
Peter Attia- Use a 'Daily Card' (white or green) for tasks to be done today. If tasks aren't completed, move relevant ones to the next day's card.
- Use a 'Weekly Card' (pink) for all tasks to be done by Sunday of the current week; this card is redone weekly.
- Use a 'Patient-Specific Card' (orange) for tasks related to individual patients.
- Use a 'Long-Term Personal Card' (white) for random personal tasks that don't need immediate attention but may intermittently move to the weekly list.
- Maintain a separate card for 'stupid things I like to do' as a humorous personal list.