On Purpose with Jay Shetty

Episode: Dr. Sara Szal: Stop Ignoring What Your Body’s Trying to Tell You! (THESE Are the Hormone Signals You Can’t Afford to Miss!)

Date: October 27, 2025
Host: Jay Shetty
Guest: Dr. Sara Szal

Main Theme & Purpose

This episode dives deep into the world of hormones with Dr. Sara Szal, a Harvard and MIT-trained physician, clinical assistant professor, and director of precision medicine. Jay and Dr. Szal explore what hormones really are, how modern life impacts our hormonal balance, why identifying imbalances is essential for wellbeing, and what practical steps anyone can take. The conversation challenges widespread myths about hormones, birth control, and stress, and empowers listeners to take ownership of their internal health landscape.

Key Discussion Points & Insights

Understanding Hormones & Imbalance

• What are hormones?
  “Hormones are these chemical messages in the body… I think of them like text messages. They tell different parts of the body to do something.” — Dr. Szal (04:01)
• The body’s five main communication systems: hormones, peptides, proteins, nutrients, genome.
• Imbalance explained: It’s when the body’s delicate homeostasis goes off—caused by factors like endometriosis, polycystic ovary syndrome (PCOS), low testosterone, or chronic stress.
  (04:01–04:53)

Why Imbalance Happens in Modern Life

• Main causes:
  1. Chronic stress (“Stress is number one,” 04:59)
  2. Genomics (genetic predispositions)
  3. Diet, toxins, lack of movement, and disrupted sleep
• Many imbalances are missed or mismanaged by the medical system, leading to people “not working at the root cause.” (12:44)

Tools to Measure Stress & Hormonal Health

• Testing for stress:
  • Start with labs and a good clinician but now, at-home measurements (cortisol, heart rate variability) are increasingly accessible.
    “The medical system has really failed a lot of people with hormone imbalances.” — Dr. Szal (05:57)
• Key hormone ranges:
  • Morning cortisol optimal: 10–15 (not just ‘average’ range)
  • Afternoon cortisol: 5–10
  • DHEA: >100 for women, >150 for men
    (06:41–07:33)

Sex Hormones & Metabolic Hormones

• Insulin’s key role:
  “Insulin is like the bouncer at a club that determines whether to let glucose into the club or not… If you are someone who has insulin resistance, your insulin can [increase], and that leads to more fat storage…” — Dr. Szal (08:48)
• Women and men have all hormones, just different amounts.
• Common deficiencies:
  • Early testosterone drop (even in 20s, due to chronic stress)
  • Thyroid issues (especially in women)
  • Progesterone and estrogen decline

Symptoms and 'Root Cause' Thinking

• Tiredness, low motivation, weight gain, hair loss—these may be hormonal, not moral failings or just mindset issues.
• “Start with your biology before we go to the place of moral failing.” — Dr. Szal (13:09)

How Fast Can Change Happen?

• Insulin: Improved with diet & exercise in as little as 3 days (15:29).
• Sex hormones (estrogen, progesterone): 4–6 weeks.
• “Some changes take longer, but some can happen surprisingly fast.” (16:08)

Hormones, Weight, and Metabolism

• Insulin resistance can start years before high glucose shows up.
• For women, high testosterone (as in PCOS) leads to weight/metabolic problems; in men, low testosterone does the same.
  (20:21)

If You’re Overwhelmed—Where to Start?

• “Start with cortisol. Cortisol is the great unifier because it’s involved in all of these other systems.” — Dr. Szal (23:43)
• Knowledge and measurement empower you, rather than overwhelm.

Top 3 Things to Decrease Stress

1. Measure stress: “What you measure improves.” (24:47)
2. Meditation/breathwork: “There’s nothing more effective than meditation breath work as a way of working with your cortisol.”
3. Supplements: Phosphatidylserine, omega-3s (“You can’t out-supplement a stressful life, but they help.”)
4. Relationships: “The people you surround yourself with can affect your hormones.” (25:18)

Eustress vs. Distress

• “We all need stress, and I don’t think of stress as a negative word. In medicine and science we call it eustress… It’s a healthy form of stress.” (30:46)
• Stress from service and love (e.g., caring for a family member) is buffered by connection.

Rituals for Daily Decompression & Regulation

• Have evening rituals to disengage from work (breath work, walks, connecting with loved ones).
• “Have a menu. Notice how you feel in your body.” (36:34–41:37)
• Nature’s pace vs. tech pace: looking at distant horizons, moving slowly.

Hormones and Relationships, Boundaries, and Divorce

• Relationships contribute to hormone regulation—good (co-regulation) and bad (chronic stressors/hasslers).
• Post-divorce, women tend to fare better hormonally, partly due to social networks and oxytocin (46:52).
• “Never waste a good trigger”—use emotional triggers for self-reflection and personal growth (48:06).
• People-pleasing is a stress response/fawn adaptation, often from childhood (53:27).

Hormonal Changes Across Life Stages

• Major shifts:
  • 10–20: Puberty, system setup
  • 20–30: Stabilization, peak fertility/testosterone, time to build good habits
  • 30–40: Early hormonal declines in some; fertility, egg/sperm quality start to change
  • 40+: Perimenopause in women, andropause in men (gradual testosterone decline)
    (59:07–63:13)

Controversies & Truths about Birth Control

• Birth control pills as hormone disruptors: Overprescribed for acne, periods, etc.; have major long-term impacts.
• “No, pain is NOT a normal part of cycling—period pain is not something you have to accept.” — Dr. Szal (66:28)
• Birth control can increase inflammation, reduce key nutrients, raise risk for diseases (e.g., Crohn’s, by impacting the microbiome), shrink the clitoris by up to 20%.
• Effects on fertility post-pill are mixed—some women bounce back, others take a year or more. (73:58)

Safer Alternatives to the Birth Control Pill

• Copper IUD: “My first three choices would be copper IUD, copper IUD, copper IUD.” (86:28)
• Copper IUD has highest satisfaction but lowest usage; more awareness needed.
• Pain: Always insist on numbing medicine and supportive procedures for IUD insertion (84:49–86:16).
• Hormonal IUD is better than oral contraceptives but not as “local” for everyone.

Cycle Syncing and Self-Experimentation

• “The data is pretty limited [on cycle syncing]… Best is the N=1 experiment—serve as your own control.” (90:03)
• Adjusting exercise, carbs, or routines to menstrual cycle makes sense for some.

The "N of 1" Approach & Radical Self-Responsibility

• You must personalize: what works for one may not work for you (91:27).
• Measure, experiment, and adjust.

Spiritual and Medical Integration

• Dr. Szal values both rigorous science and the “heart” in patient care: “My job is to serve them and… bring a sense of wholeness, and to help to activate their own healing capacity.” (94:17)

Notable Quotes & Memorable Moments

• On Stress & Self-Perception:
  “Start with your biology before we go to the place of moral failing.” — Dr. Szal (13:09)
• On Birth Control Pills:
  “This idea that pain is a normal part of being female in cycling is a myth that we totally have to bust.” (66:28)
• On Data & Self-Experimentation:
  “The randomized trial is the gold standard… but even better is the N of 1 experiment where you serve as your own control.” (90:03)
• On Relationships:
  “When you have a relationship with someone that allows your nervous system to calm down and reduce your cortisol… that is so effective.” (24:47)
• On Leaving Bad Situations:
  “Don’t sacrifice authenticity for connection… It’s okay to leave. When you suck it up and stay, there’s a self-abandonment that’s not good for your spirit, not good for your hormones.” (101:01)

Practical Takeaways

If You Suspect a Hormonal Problem:

• Start with cortisol: Use labs and heart rate variability to benchmark.
• Track your sleep, nutrition, stress, relationships.
• Address basics first: Sleep improvement, anti-inflammatory diet, regular movement, meaningful relationships.
• Question the "normal": Painful periods, chronic fatigue, or weight gain are not inevitable or normal—look for underlying hormonal imbalances.

For Birth Control & Reproductive Health:

• Try copper IUD over pills for non-hormonal, high-satisfaction contraception.
• Always get full informed consent about long-term effects when starting the pill.
• For painful periods or acne, explore diet and lifestyle medicine first.

Regulating Stress & Hormones Daily:

• Measure (cortisol, HRV, etc.)
• Create regular decompression rituals.
• Use breath work, nature, movement, loving relationships.
• Build a personalized menu of self-care strategies; notice what nourishes or depletes you.

Measuring and Testing

• Put power in your own hands—order and retain your results.
• Bring actionable data to your doctor, and don’t outsource all expertise—“you’re your best doctor.”

Timestamps for Important Segments

| Topic/Segment | Timestamp | |---------------------------------------|--------------| | What are hormones & imbalance? | 04:01–04:53 | | Modern causes of hormonal imbalance | 04:53–05:52 | | Testing stress & hormones | 05:53–07:33 | | Insulin’s importance | 08:29–09:41 | | Hormone differences in men vs women | 10:08–11:17 | | Symptoms: fatigue, weight gain, etc. | 13:09–13:53 | | How quickly can you shift hormones | 15:04–16:20 | | Weight, metabolism & hormones | 20:21–22:42 | | Where to start if overwhelmed | 23:43–24:42 | | Top 3 things to decrease stress | 24:47–25:18 | | Eustress vs. distress | 30:41–32:21 | | Evening rituals/menu for regulation | 34:37–41:37 | | Hormones & relationship boundaries | 46:04–49:30 | | People pleaser stress response | 53:27 | | Big hormonal shifts by decade | 59:07–63:13 | | Controversy: birth control pills | 64:08–69:08 | | Birth control after-effects & IUD | 71:49–87:26 | | Fertility after the pill | 87:26–89:52 | | Cycle syncing & N=1 experimentation | 90:03–91:27 | | Integrating science & spirituality | 94:02–99:08 | | Final five, best & worst advice | 99:08–101:51 |

Final Five Rapid-Fire with Dr. Szal

1. Best advice: “Get curious, not furious.” (99:25)
2. Worst advice: “Hormones can’t be measured. They fluctuate too much.” (99:36)
3. One habit for 30 days: Track your stress response/heart rate variability. (99:58)
4. Old belief changed: Staying no matter what is not always healthy; it’s ok to leave. (101:00)
5. Law for all: “Regulate yourself and then decide. Don’t make decisions from a dysregulated state.” (101:32)

Summary Tone

Both Jay and Dr. Szal bring a compassionate, practical, and often humorous approach to complex science. The tone is hopeful, non-judgmental, evidence-based, and action-oriented—with a strong message that everyone can and should take more agency over their health, starting with the “boring basics.”

Best For...

• Anyone struggling with low energy, mood, weight, or chronic stress.
• Women seeking facts (not myths) about hormones and birth control.
• Listeners ready to take ownership of their well-being, especially around hormonal and metabolic health.
• People looking for practical, science-based but deeply humane advice on living a regulated, tuned-in life.

“What you measure improves.” — Dr. Sara Szal (24:47)
“Regulate yourself, then decide.” — Dr. Sara Szal (101:32)