Ali Hazelwood is the pen name of an Italian neuroscientist whose double life produced the defining romance novels of the BookTok era. While working as a professor of neuroscience, she secretly wrote The Love Hypothesis — a fake-dating romance born as Star Wars fan fiction — and became, almost overnight, a number one New York Times bestselling author.
| Full Name | Ali Hazelwood (pen name; real name not publicly disclosed) |
| Born | Italy (date not publicly disclosed) |
| Nationality | Italian, based in the United States |
| Occupation | Romance novelist; former neuroscience professor |
| Known For | The Love Hypothesis; Love on the Brain; Bride; Mate |
| Net Worth (est.) | Not publicly disclosed |
An Italian Neuroscientist
Hazelwood was born and raised in Italy and lived in Germany and Japan before moving to the United States to pursue a PhD in neuroscience, specialising in brain stimulation and cognitive neuroscience. She built a genuine academic career — peer-reviewed papers in brain science, in which, as her official biography jokes, no one makes out and the happy ending is not guaranteed — and rose to a full-time professorship. All the while, she was writing fiction at night under a name nobody in her faculty could Google back to her.
Fan Fiction Origins
Like many of her generation’s novelists, Hazelwood apprenticed in fan fiction. In 2018 she published Head Over Feet on Archive of Our Own, a contemporary romance reimagining Star Wars characters Rey and Kylo Ren as academics. The story gathered a devoted readership, and in 2020 literary agent Thao Le came calling with an audacious suggestion: file off the serial numbers and sell it. Hazelwood rewrote the story with original characters — prickly PhD candidate Olive Smith and feared professor Adam Carlsen — and Berkley bought it.
The Love Hypothesis Phenomenon
Published in September 2021, The Love Hypothesis spent more than forty weeks on the New York Times bestseller list and became the template for a publishing boom: women-in-STEM heroines, grumpy-sunshine dynamics, and laboratory politics played as romantic comedy. BookTok adopted it as a founding text. A feature-film adaptation followed, reaching screens in 2026 — an extraordinary trajectory for a manuscript that began as hobbyist fan fiction uploaded for free.
The STEMinist Shelf and Beyond
Hazelwood published at academic speed. Love on the Brain (2022) sent a neuroscientist to NASA; three STEMinist novellas were collected as Loathe to Love You; Love, Theoretically (2023) tackled physics and adjunct precarity; and Check & Mate, her young adult debut about chess rivals, won the Goodreads Choice Award for young adult fiction. In 2022 she left her professorship to write full time. She then swerved genres: Bride (2024), a vampire-werewolf marriage-of-convenience romance, opened a paranormal line continued in Mate (2025), while Not in Love, Deep End and Problematic Summer Romance kept the contemporary romances coming — nine full-length novels by 2026.
Ali Hazelwood Net Worth
Hazelwood’s earnings are not publicly disclosed, and she has never discussed them; this site does not repeat the unsourced figures that circulate online. What is documented is the scale of the success behind them: multiple number one bestsellers translated worldwide, film adaptation income and a backlist that continues to sell years after publication. Her real name, age and finances remain, by deliberate design, the least interesting mystery in publishing.
Personal Life
Hazelwood guards the boundary between her two identities carefully: for years, she has said, no one in her academic world connected the professor to the novelist. Her public author life is conducted through the pen name — book tours, festivals and a warm, funny online presence. Her official biography reports that when she is not writing she can be found crocheting, eating cake pops or watching sci-fi films with her husband and their three cats, known to readers as her feline overlords.
Frequently Asked Questions
What is Ali Hazelwood’s real name?
It is not publicly disclosed. Ali Hazelwood is a pen name adopted to keep her writing separate from her academic career as a neuroscientist, and she continues to keep her legal identity private.
Was The Love Hypothesis really fan fiction?
Yes. It began as Head Over Feet, a Rey and Kylo Ren story published on Archive of Our Own in 2018, and was rewritten with original characters before its 2021 publication.
Is Ali Hazelwood still a professor?
No. She worked as a full-time neuroscience professor until 2022, when the success of her novels allowed her to leave academia and write full time.
What should I read after The Love Hypothesis?
Love on the Brain and Love, Theoretically continue her women-in-STEM romances; for something different, Bride and its sequel Mate move into paranormal romance.
Related Biographies
Alex Aster and Jay Shetty — more profiles in our Entrepreneurs & Authors collection.
Sources
Net worth and salary figures are estimates based on publicly available sources and may change over time.
