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October 10, 2025 36 mins

Jacobo Grinber (Living and Disappearing in the Matrix) | Marks Unexplained World Podcast (Ep. 169)

Jacobo Grinberg-Zylberbaum was a Mexican neurophysiologist and psychologist who studied Mexican shamanism, Eastern disciplines, meditation, astrology and telepathy through the scientific method.

However, Grinberg disappeared in December 1994. There are many conspiracy theories surrounding Grinberg's disappearance, with one of them implying that the CIA caused his disappearance because his studies put in danger the pharmaceutical and medical industry.

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Marks Unexplained World 

Socials: 

Facebook: https://www.facebook.com/groups/755482988915649/ 

Instagram: Mark Hughes (@mark_the_medium__) • Instagram photos and videos 

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Podcast Description & Credits

www.hauntedresearchcentre.com

www.frightnights.co.uk

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Credits...

Photography by Helen Poolar

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Marks Unexplained World background music:

Music by Adi Goldstein - Blank Light

Music from #Uppbeat (free for Creators!):

https://uppbeat.io/t/adi-goldstein/blank-light

License code: C6W9MMXFLSZUXLLO

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Paranormal Research Centre Promo:

Music by Kevin MacLeod - Gathering Darkness

Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/kevin-macleod/gathering-darkness

License code: ATHMPVKBDSRGQIUY

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Fright Nights Promo:

Music by AK - Sky High

Music from #Uppbeat (free for Creators): https://uppbeat.io/t/ak/sky-high

License code: SMVBCSQXP5FFNVJT 

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Mark as Played

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