Reviewed by HootRated editorial · Last updated May 18, 2026

Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes)

Thomasine E. Lewis Tilden

Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes)

Age Rating, Reading Level & Content Guide

by Thomasine E. Lewis Tilden

Medical Files; 24/7 Science Behind the Scenes

Reading Level 5-6 10LP Ages 13+ Balanced Read Page-Turner

The text is written at a 5th grade reading level, the subject matter is intended for teens (ages 13+), and the content is mild with minimal sensitive material.

Buy on Amazon Listen on Audible

We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.

About This Book

Discover the fascinating world of parasites that live inside us and the brave scientists who battle these tiny invaders. Explore real-life stories that reveal the surprising ways parasites affect our bodies and how experts work to keep us healthy. Dive into a thrilling mix of science and adventure that uncovers the secrets of these hidden creatures.

Themes

Science & NatureBiologyAdventure

Quick Assessment

This is a Level 5-6 book with mild content intensity. Content themes include mild peril, science & nature. Written for readers ages 13+.

Why we rated Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes) 10LP

Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes) is written at a Level 5-6 reading level across 64 pages (approximately 6,650 words). Strong independent readers around grade 6.7 can typically handle this book on their own; with parent or teacher support, Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes) works for readers up to grade 7.7.

Read aloud, Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes) takes about 44 minutes, which fits within a single read-aloud session.

We rate Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes) as 10LP ("Light — Physical") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.

Specific content flags noted by reviewers: Mild Peril, Science & Nature.

Thematically, Belly-busting Worm Invasions!: Parasites That Love Your Insides! (24/7: Science Behind the Scenes) explores science & nature, biology, and adventure — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 13+ range — the maturity and attention span match the story's pacing.
✓ Reluctant readers who need fast-paced, hook-heavy stories to stay engaged.
✓ Kids drawn to stories about science & nature, biology, adventure.
✓ Readers who fall hard for one book and want a long series to live in — there is one more book in the Medical Files; 24/7 Science Behind the Scenes series.
✓ Curious kids who prefer real-world topics over made-up stories.