What do gluten, a punny cookbook, and U.K. boy band One Direction have in common? They top this week’s list of non-fiction bestsellers, of course.

For the two weeks ending June 17, 2012:

1. Wheat Belly, William Davis
(Rodale Press/Raincoast, $29.99 cl, 9781609611545)

2. The Looneyspoons Collection, Janet and Greta Podleski
(Granet Publishing, $35.95 pa, 9780968063156)

3. Life as One Direction, One Direction
(General Books/HarperCollins, $14.99 pa, 9780007488124)

4. The Magic, Rhonda Byrne
(Atria Books/Simon & Schuster, $14.99 pa, 9781451673449)

5. Dare to Dream, One Direction
(General Books/HarperCollins, $24.99 cl, 9780007444397)

6. The End of Growth, Jeff Rubin
(Random House Canada, $29.95 cl, 9780307360892)

7. Heaven Is for Real, Todd Burpo and Lynn Vincent
(Thomas Nelson/Canada Direct, $18.99 pa, 9780849946158)

8. To Heaven and Back, Mary C. Neale
(WaterBrooke/Doubleday Religious Publishing, $17.99 pa, 9780307731715)

9. Wild, Cheryl Strayed
(Knopf Doubleday, $29 cl, 9780307592736)

10. The Book of Burger, Rachael Ray
(Atria/S&S, $28.99 pa, 9781451659696)

11. Canadian Living: The Barbecue Collection, Updated Edition
(Transcontinental Books, $32.95 pa, 9780987747402)

12. The Big Miss: My Years Coaching Tiger Woods, Hank Haney
(Crown Archetype/Random House, $31 cl, 9780307985989)

13. The Wealthy Barber Returns, David Chilton
(Financial Awareness Corporation, $19.95 pa, 9780968394748)

14. The Happiness Project, Gretchen Rubin
(HarperCollins, $17.99 pa, 9781443414562)

15. The Tools: Transform Your Problems into Courage, Confidence, and Creativity, Phil Stutz and Barry Michels
(Random House Canada, $29.95 cl, 9780307360922)

16. In the Garden of Beasts: Love, Terror, and an American Family in Hitler’s Berlin, Erik Larson
(Broadway Books/Random House, $19 pa, 9780307408853)

17. Let’s Pretend This Never Happened, Jenny Lawson
(Amy Einhorn Books/Penguin, $27.50 cl, 9780399159015)

18. Wreck This Journal, Keri Smith
(Berkley/Penguin, $16.50 pa, 9780399533464)

19. Beerlicious: The Art of Grillin’ and Chillin’, Ted Reader
(McClelland & Stewart, $29.99 pa, 9780771073670)

20. Go The F**k to Sleep, Adam Mansbach; Ricardo Cortés, illus.
(Akashic Books/Disticor, $16.95 cl, 9781617750250)