Movies Like The Gut: Our Second Brain

If you liked The Gut: Our Second Brain (2014), a documentary movie directed by Cécile Denjean, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Unknown: Cave of Bones (2023)
★ 7.1/10Also documentary
Scientists examine underground clues from over 250,000 years ago that raise questions about our early relatives — and what it truly means to be human.
2
42 Up (1999)
★ 7.6/10Also documentary
Director Michael Apted revisits the same group of British-born adults after a 7 year wait. The subjects are interviewed as to the changes that have occurred in their lives during the last seven years.
3
Earth: One Amazing Day (2017)
★ 7.7/10Also documentary
An astonishing journey revealing the awesome power of the natural world. Over the course of one single day, we track the sun from the highest mountains to the remotest islands to exotic jungles.
4
My Mom Jayne (2025)
★ 8/10Also documentary
Through deeply personal interviews with her siblings and an examination of the photographs, letters, and belongings left behind, Mariska assembles a new portrait of her mother Jayne Mansfield, an extraordinary and…
5
Elstree 1976 (2015)
★ 6.2/10Also documentary
A documentary about ten very different lives connected by having appeared onscreen wearing masks or helmets in Star Wars.
6
180° South (2010)
★ 7.2/10Also documentary
The film follows adventurer Jeff Johnson as he retraces the epic 1968 journey of his heroes Yvon Chouinard and Doug Tompkins to Patagonia.
7
Avatar: The Deep Dive - A Special Edition of 20/20 (2022)
★ 7.2/10Also documentary
An inside look at one of the most anticipated movie sequels ever with James Cameron and cast.
8
Being Eddie (2025)
★ 6.8/10Also documentary
From teen comedian to Hollywood legend, Eddie Murphy revisits his extraordinary showbiz ride with raw honesty and humor.
9
Come See Me in the Good Light (2025)
★ 7.1/10Also documentary
In an intimate and joyful story of love in the face of loss, celebrated poets Andrea Gibson and Megan Falley find strength—and unexpected hilarity—in what might be their final year together.
10
28 Up (1985)
★ 7.5/10Also documentary
Just two years away from turning 30, participants in Michael Apted's documentary series are facing serious questions of identity and purpose, wondering whether they've found their place in the world.
11
The AI Doc: Or How I Became an Apocaloptimist (2026)
★ 6.9/10Also documentary
A father-to-be tries to figure out what is happening with all this AI insanity, and explores the most powerful technology humanity has ever created... and what's at stake if we get it wrong.
12
Hell House (2001)
★ 6.4/10Also documentary
A look at the "Hell House" performed annually in October by the youth members of Trinity Church (Assemblies of God) in Cedar Hill, Texas (a Dallas suburb) — seen by over 10,000 visitors each year.
13
35 Up (1991)
★ 7.6/10Also documentary
Director Michael Apted revisits the same group of British-born adults after a 7 year wait. The subjects are interviewed as to the changes that have occurred in their lives during the last seven years.
14
Ted Bundy: Mind of a Monster (2019)
★ 7.6/10Also documentary
New exclusive access and never before heard testimony gives a unique insight into the mind of America's most notorious serial killer, Ted Bundy. Breathtaking archive from the time and the voice of Bundy himself…
15
A Toxic Love Story (2026)
★ 6.4/10Also documentary
A string of threatening emails escalates into a revenge plot involving a newly married US marshal and his ex-girlfriend.
16
I Am Vanessa Guillen (2022)
★ 7.5/10Also documentary
Vanessa Guillen was 20 years old when she was found murdered at a US Army base. Rather than submit to silence, her family fought for justice and change.
17
You Can See Everything (2026)
★ 8.9/10Also documentary
Thirty-four days before she's sent to prison, notorious Silicon Valley founder Elizabeth Holmes invites a skeptical film crew to document her every move. What begins as an intimate portrait of an enigmatic felon…
18
Being James Bond (2021)
★ 7.8/10Also documentary
Daniel Craig candidly reflects on his 15 year adventure as James Bond. Including never-before-seen archival footage from Casino Royale to the upcoming 25th film No Time To Die, Craig shares his personal memories in…
19
Dawg Fight (2015)
★ 6.4/10Also documentary
In a crime-plagued neighborhood near Miami, brutal, bare-knuckled backyard fights give young men a chance to earn money -- and self-respect.
20
The Seat (2025)
★ 7.6/10Also documentary
'The Seat' is an unprecedented inside look that led to a once-in-a-generation driver change in Mercedes and F1 history. It reveals the private conversations that led the Mercedes team and Toto Wolff, its Team Principal…