YOUR NEW PRIME is about your next 30 years of health and vitality

The new book from Leslie Kenny, co-founder of the Oxford Longevity Project.

Published by Penguin Random House, 13 May 2027.

YOUR NEW PRIME is about your next 30 years of health and vitality

The new book from Leslie Kenny, co-founder of the Oxford Longevity Project.

Published by Penguin Random House, 13 May 2027.

WHO THIS BOOK IS FOR

Written for you, whatever your age

  • You are in perimenopause, menopause, or living with an autoimmune illness, and you are tired of being told your bloodwork is normal.

  • You have spent years trying to get pregnant, or you are trying now, and you want more than a fertility clinic gave you.

  • You are decades from any of this and want to start now, while it is still the cheapest investment you will ever make.

WHAT YOU WILL LEARN

Inside you will find…

  • The twelve hallmarks of ageing. And the three Leslie ranks first: cleaning up your cells, healing your gut, and lowering inflammation.

  • How to read a biological age test. What the different tests measure, and which one Leslie uses on herself.

  • The exact blood panel to ask for. Thyroid, iron, B12, vitamin D, sex hormones and more, ready to hand your doctor.

  • What the evidence really says. Sauna, cold water and peptide therapies, and where the science runs out.

  • A 30-day plan to start today. Book the tests, change one habit at a time. No overhaul required.

KEY MOMENTS FROM YOUR NEW PRIME

Moments you will remember

Four turning points from the book

CHAPTER 1

She was told she had 5 years to live

Her rheumatologist said stop trying for a baby. She had a good five years left, he told her. She didn’t stop.

CHAPTER 2

Pregnant naturally at 42

Four rounds of IVF failed. A donor egg failed too. Then, at 42, she conceived on her own.

CHAPTER 3

Biological age 21, decades later

Leslie now tests her biological age at 21, using twenty-nine inflammatory markers. The disease that nearly stopped her is gone.

CHAPTER 4

Throw the kitchen sink at it

Standing in the hospital car park in shock, she remembered her grandmother’s rule. She decided the diagnosis would not win.

ABOUT THE AUTHOR

Meet Leslie

Leslie Kenny is not a doctor. She is a patient.

Diagnosed with rheumatoid arthritis and lupus at 39, and told to give up on having another child, she built her own plan instead, and had her daughter naturally at 43. She now tests her biological age at 21, using twenty-nine inflammatory markers, and lives free of the disease that once threatened her.

Leslie holds an MBA from Harvard and a degree from UC Berkeley. She co-founded the Oxford Longevity Project and Oxford Healthspan, works with scientists at Oxford and Osaka, and serves as Global Executive Ambassador for the Japan Autophagy Consortium.

Your New Prime book in bookstore

Pre-order today

Official launch 13th May 2027. Pre-order today: