Brennan’s antigravity diet - Boost your serotonin with STACK TEN Ep 7

Dr Brennan Spiegel (physician, gastroenterologist, and author of Pull) and Dr Lachlan Kent (cognitive scientist and founder of Mental Gravity) explore how diet, microbiome diversity, and serotonin production shape your capacity to stand up to gravity—physically and mentally.

They introduce the Anti-Gravity Diet and Brennan’s STACK TEN framework, a simple, evidence-informed way to support the gut’s serotonin “factories” and improve whole-body gravity resilience. Along the way, they unpack how food, fibre, omega-3s, polyphenols, vagus-nerve activation, and mindful rest all participate in the body–mind system that keeps us upright and energised.

Together, Brennan and Lachlan discuss babies as “gravity novices,” leaky gut, the gut–brain axis, evolutionary embodiment, time dilation in depression, and why serotonin—serum tone—is essential for managing the constant downward pull of Earth’s gravity.

• A holistic framework for supporting natural serotonin production—the body’s anti-gravity molecule.
  Grounded in gastrointestinal physiology, microbiome science, and biogravitational medicine.
• Not a restrictive diet — a practical, everyday toolkit for gravity resilience.

A memory device for foods that supply the raw material (tryptophan) for serotonin production:

Salmon
Turkey
Avocado
Chickpeas
Kidney beans
Tofu/Tempeh
Eggs
Nuts

Paired with:

• Fibre → feeds microbes that create short-chain fatty acids

• Omega-3s → shift the microbiome toward serotonin-supporting species

• Polyphenols → found in berries, cocoa, turmeric, and green tea

00:00 — Welcome & overview of the Anti-Gravity Diet
01:20 — Serotonin as the body’s anti-gravity molecule
04:20 — Microbiome diversity & the gut barrier
06:30 — Babies, serotonin & early gravity resilience
09:40 — Tryptophan, fibre & short-chain fatty acids
11:00 — Leaky gut, inflammation & decoherence
13:00 — Food–mood science & depression
16:40 — What to eat: introducing STACK TEN
17:00 — The ten tryptophan-rich foods
18:50 — Polyphenols, omega-3s & microbiome tuning
19:50 — Beyond diet: exercise, nature, sunlight
21:20 — Balancing sympathetic vs parasympathetic tone
23:00 — Vagus-nerve stimulation & rest-and-digest
24:30 — Gravity as the integrator across biological levels
26:00 — Life as a system for managing gravity
27:20 — Closing reflections & future topics

The Gravity Doctors website: ⁠https://thegravitydoctors.com⁠
Gravitype Quiz: virtualmedicine.org/pull
Dr Brennan Spiegel: brennanspiegelmd.com
Dr Lachlan Kent: lachlankent.au
Book — Pull: How Gravity Shapes Your Body, Steadies the Mind, and Guides Our Health