The Books Insiderindependent audiobook data
What in the World is Insulin? by Jeremy Steen, Justine Nicole Banszky

What in the World is Insulin?: Audiobook

by Jeremy Steen, Justine Nicole Banszky, Belinda Tam, April Sui, Arnavi Patel, Avery Kennedy, Anthony Chen, Sameen Ali, Dr. Austin Mardon, John Christy Johnson, Peter Anto Johnson, Nasia Sheikh, Asfar Khan · narrated by Carla Lenfesty · unabridged · 2021

Book 12 of the What in the World? series

According to The Books Insider's catalog data, the What in the World is Insulin? audiobook runs 3.9 hours unabridged, narrated by Carla Lenfesty (about 2.6 hours at 1.5× playback speed).

3.9listening hrs
Medicine & Naturopathystore shelf
2021released
Free for new listeners
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The instrument When will you finish it?

Based on 3.9 hours of listening.

Days to finish What in the World is Insulin? at common listening paces
Your paceYou'll finish in
30 min / day8 days
1 hour / day4 days
2 hours / day2 days
1 hour / day at 1.5×3 days
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Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 3.9 hours, it is shorter than 61% of the 10,901 Medicine & Naturopathy audiobooks in our catalog.

More narrated by Carla Lenfesty

Carla Lenfesty narrates 7 unabridged audiobooks in our catalog, 25 hours in all.

About as long, on the Medicine & Naturopathy shelf

725 Medicine & Naturopathy audiobooks in our catalog run within 10% of this length. The most popular on the store:

Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.

About this listen

What in the World is Insulin? is book 12 of Jeremy Steen's What in the World? series: a 3.9-hour unabridged recording, read by Carla Lenfesty, released October 21, 2021, on the Medicine & Naturopathy shelf.

The listen at a glance

Length
3.9 hrs
Narrated by
Carla Lenfesty
Released
October 21, 2021
Format
Unabridged audiobook
Language
English
Store shelves
Medicine & Naturopathy
Series
What in the World? #12
ISBN
9781773693880

How to listen to What in the World is Insulin? free

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Questions listeners ask

How long is the What in the World is Insulin? audiobook?

What in the World is Insulin? runs 3.9 hours unabridged. At 1.5× speed that drops to roughly 2.6 hours.

Is the What in the World is Insulin? audiobook free?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates What in the World is Insulin??

What in the World is Insulin? is narrated by Carla Lenfesty.