Kevin Smith reveals how much weight he's lost since his heart attack

Kevin Smith is bouncing back. The actor has dropped a significant amount of weight nearly two months after suffering a massive heart attack.

“I’m officially down 20 pounds as of this morning! 20 pounds in 13 days & my blood pressure is amazing. How did this happen?” he tweeted to his more than three million followers on Wednesday, March 21. “My Doc said lose 50 pounds. 20 down, 30 more to go!”

See Kevin Smith at his heaviest, about 10 years ago:

40 PHOTOS
Kevin Smith through the years
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Kevin Smith through the years
LOS ANGELES, CA - AUGUST 22: Director Kevin Smith and producer Scott Mosier pose during the Opening Night Gala featuring over 100 Artists reinterpreting classic cult films held at Gallery 1988 on August 22, 2008 in Los Angeles, California. (Photo by Angela Weiss/Getty Images)
Kevin Smith during 'Clerks II' Sydney Premiere at State Theatre in Sydney, NSW, Australia. (Photo by John Stanton/WireImage)
Kevin Smith, Jim Mahfood and Gilbert Hernandez at the Golden Apple Comic Book Megastore in Los Angeles, California (Photo by Albert L. Ortega/WireImage)
Kevin Smith and Marilyn Ghigliotti during World Premiere Comic Book Signing For 'Clerks' at Golden Apple Comic Book Megastore in Los Angeles, California, United States. (Photo by Albert L. Ortega/WireImage)
Kevin Smith during 'Clerks' 10th Anniversary Screening and Q&A at ArcLight Theater in Hollywood, California, United States. ***Exclusive*** (Photo by Albert L. Ortega/WireImage)
HOLLYWOOD, CA - APRIL 30: Director Kevin Smith presents during the Hollywood Reporter's 33rd Annual Key Art Awards at the Kodak Theatre on April 30, 2004 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
Jason Mewes and Kevin Smith during 'Clerks X' and 'Jersey Girl' DVD Release Party at Jay & Silent Bob's Secret Stash in Westwood, CA, United States. (Photo by Albert L. Ortega/WireImage)
Brian O'Halloran, Marilyn Ghigliotti, Jason Mewes, Scott Mosier, Jeff Anderson and Kevin Smith (Photo by Albert L. Ortega/WireImage)
Kevin Smith and Rosario Dawson at the Jimmyz in Cannes, France. (Photo by John Shearer/WireImage)
Kevin Smith, Rosario Dawson and Harvey Weinstein at the Jimmyz in Cannes, France. (Photo by John Shearer/WireImage)
Rosario Dawson and writer-director Kevin Smith at the Palais des Festival in Cannes, France. (Photo by Jeff Vespa/WireImage)
Rosario Dawson, Kevin Smith and Jennifer Schwalbach Smith (Photo by J. Vespa/WireImage)
Kevin Smith (right) and Jennifer Schwalbach Smith during 2006 Cannes Film Festival - 'Clerks II' Premiere at Palais des Festival in Cannes, France. (Photo by J. Vespa/WireImage)
Rosario Dawson, Kevin Smith and Jennifer Schwalbach Smith (Photo by Tony Barson Archive/WireImage)
LOS ANGELES - JULY 11: Writer/director Kevin Smith (L) and actor Jason Lee pose at the premiere of MGM's 'Clerks II' at the Cinerama Dome Theater on July 11, 2006 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
Richard Kelly and Kevin Smith during Richard Kelly Signs His Graphic Novel 'Southland Tales' and Kevin Smith Signs Posters for 'Clerks II' at Jay and Silent Bob's Secret Stash West in Westwood, CA, United States. (Photo by Albert L. Ortega/WireImage)
SLUG: ST-SMITH DATE: 06/28/2006 CREDIT: Bill O'Leary Director, writer and actor Kevin Smith, in town to promote his much anticipated sequel to his breakout 1994 film 'Clerks'. Pictured, Kevin Smith, outside of the mini market at Tenley circle in NW. (Photo by Bill O'Leary/The Washington Post/Getty Images)
Director Kevin Smith is photographed at home in front of a painting of his daughter, Harley. In one sense he is a complete failure as a filmmaker. With his latest feature, 'Clerks 2,' he moves the ball forward not one bit in regards to his filmmaking skill or writing voice. He has been treading water for 10 years, and is a poster boy for what is essentially the emotional bankruptcy of geek culture. In another light, however, he is a massive success, with regular appearances on 'The Tonight Show,' his comic books and stores, his online empire, and the way in which he turned himself into a brand. Photo shot on Monday, July 3, 2006. (Photo by Myung J. Chun/Los Angeles Times via Getty Images)
LOS ANGELES - JULY 11: MGM's Rick Sands (L) and Writer/Director Kevin Smith arrive at the premiere of MGM's 'Clerks II' at the Cinerama Dome Theater on July 11, 2006 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES - JULY 11: Writer/director Kevin Smith (L) and producer Scott Mosier pose at the afterparty for the premiere of MGM's 'Clerks II' at Avelon on July 11, 2006 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
Kevin Smith, Jennifer Schwalbach Smith and Daughter Harley at the ArcLight Theatre in Hollywood, California (Photo by Steve Granitz/WireImage)
LOS ANGELES - JULY 11: Actress Rosario Dawson (L) and writer/director Kevin Smith arrive at the premiere of MGM's 'Clerks II' at the Cinerama Dome Theater on July 11, 2006 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
Kevin Smith, director and Jason Lee (Photo by Jeff Vespa/WireImage for The Weinstein Company)
Kevin Smith and Jason Lee during 'Clerks II' Los Angeles Premiere - Red Carpet at Arclight Cinema in Hollywood, California, United States. (Photo by Albert L. Ortega/WireImage for The Weinstein Company)
Rick Sands, Kevin Smith and Jennifer Smith during 'Clerks II' Los Angeles Premiere - Red Carpet at Arclight Cinema in Hollywood, California, United States. (Photo by Albert L. Ortega/WireImage for The Weinstein Company)
Kevin Smith, director during 'Clerks II' Los Angeles Premiere - Red Carpet at Arclight Cinema in Hollywood, California, United States. (Photo by Albert L. Ortega/WireImage for The Weinstein Company)
Jason Mewes, Brian O'Halloran, Trevor Fuhrman, Rosario Dawson, Kevin Smith, Jeff Anderson and Jennifer Smith (Photo by Albert L. Ortega/WireImage for The Weinstein Company)
Harvey Weinstein, Kevin Smith, Jeff Anderson and Brian O'Halloran (Photo by J. Vespa/WireImage for The Weinstein Company)
Rosario Dawson and Kevin Smith, director during 'Clerks II' Los Angeles Premiere - Red Carpet at Arclight Cinema in Hollywood, California, United States. (Photo by J. Vespa/WireImage for The Weinstein Company)
Kevin Smith during Kevin Smith and Lisa Loeb Host A Special Screening of Clerks for the Netflix Rolling Roadshow at Marine Park in Red Bank, NJ, United States. (Photo by Lawrence Lucier/FilmMagic)
Jason Mewes and Kevin Smith during 'Clerks II' Los Angeles Premiere - Red Carpet at Arclight Cinema in Hollywood, California, United States. (Photo by J. Vespa/WireImage for The Weinstein Company)
Lisa Loeb and Kevin Smith during Kevin Smith and Lisa Loeb Host A Special Screening of Clerks for the Netflix Rolling Roadshow at Marine Park in Red Bank, NJ, United States. (Photo by Lawrence Lucier/FilmMagic)
Kevin Smith during 'Clerks II' Sydney Premiere at State Theatre in Sydney, NSW, Australia. (Photo by John Stanton/WireImage)
Kevin Smith at the Jay And Silent Bob's Secret Stash West in Westwood, CA (Photo by Albert L. Ortega/WireImage)
11/20/2006. Westwood. Director Kevin Smith,36, and Dagmar Weaver�Madsen (CQ), 23 cinematography grad student rehearse a scene before filming. Director Kevin Smith (Clerks) is teaching a class in creating short form movies for the cell phone for students at UCLA. The students write,produce, direct and film these original movies. They are shooting a mobisode on monday at Jay and Silent Bob's Secret Stash West for the class called mobisodes 101. (Photo by Anne Cusack/Los Angeles Times via Getty Images)
LOS ANGELES, CA - JULY 17: (l-r) Directors Edgar Wright and Kevin Smith talk at the opening night of 'Crazy 4 Cult' a group art show saluting classic cult movies at Gallery 1988, on July 17, 2007 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)
LOS ANGELES, CA - JULY 17: Director Kevin Smith attends the opening night of 'Crazy 4 Cult' a group art show saluting classic cult movies at Gallery 1988, on the 17th July 2007, in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)
PARK CITY, UT - JANUARY 24: Screenwriter Kevin Smith attends the 'Clerks' Premiere at Egyptian Theatre during the 2014 Sundance Film Festival on January 24, 2014 in Park City, Utah. (Photo by Robin Marchant/Getty Images for Sundance Film Festival)
KEVIN SMITH. 07.15.2006. Director/Actor Kevin Smith photographed at the Park Hyatt on a press junket for his new movie, Clerks 2, which comes out next week. (Tory Zimmerman/Toronto Star) (Photo by Tory Zimmerman/Toronto Star via Getty Images)
PARK CITY, UT - JANUARY 24: Screenwriter Kevin Smith officiates a marriage at the 'Clerks' Premiere at Egyptian Theatre during the 2014 Sundance Film Festival on January 24, 2014 in Park City, Utah. (Photo by Robin Marchant/Getty Images for Sundance Film Festival)
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Smith cited Penn Jillette’s book “Presto! How I Made Over 100 Pounds Disappear and Other Magical Tales” in helping with his transformation and for introducing him to Ray Cronise’s program Just Sides, which is based on plant-based meals.

As previously reported, Smith was rushed to the hospital following a show in late February. “After the first show this evening, I had a massive heart attack. The Doctor who saved my life told me I had 100% blockage of my LAD artery (aka “the Widow-Maker”),” he captioned a photo of himself in a hospital bed at the time. “If I hadn’t canceled show 2 to go to the hospital, I would’ve died tonight. But for now, I’m still above ground!”

“After the first show, I felt kind of nauseous. I threw up a little bit it didn’t seem to help. Then I started sweating buckets and my chest felt heavy,” he continued. “I’ve had a weird, wonderful career in all sorts of media, amazing friends, the best wife in the world and an incredible daughter who made me a Dad. But as I stared into the infinite, I realized I was relatively content. … But the point of this post is to tell you that I faced my greatest fear tonight… and it wasn’t as bad as I’ve always imagined it’d be. I don’t want my life to end but if it ends, I can’t complain. It was such a gift.”

Smith has continued to reflect on his experience since leaving the hospital on March 1. He’s thanked fans on social media for their support and driven home the point that he — and everyone else — are on “borrowed time.”

See more celebrity weight-loss transformations:

20 PHOTOS
Shocking celebrity weight-loss transformations
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Shocking celebrity weight-loss transformations

Mama June in 2017

The "Honey Boo Boo" star documented her weight loss journey on her very own reality show! She is now down to a size 4 -- and she looks incredible!

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Mama June in 2013

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Khloe Kardashian in 2012

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Khloe Kardashian in 2016

Hard work does pay off! The youngest Kardashian sister is obsessed with exercising and documents all her workout sessions on social media.

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Lena Dunham in 2015

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Lena Dunham in 2017

The "Girls" star lost a significant amount of weight after going on a holistic diet to help alleviate symptoms of endometriosis. 

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Wendy Williams in 2012

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Wendy Williams in 2017

The TV personality revealed in 2015 that she lost 50 pounds over the course of three years with a healthy diet that doesn't include refined sugars, meat, dairy or "eating after dark." It looks like she's been committed to the strict diet. She looks better than ever in 2017!

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Ricki Lake in 2010

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Ricki Lake in 2011

The actress lost 20 pounds when she appeared on "Dancing With the Stars" in 2011.

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Jordin Sparks in 2008

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Jordin Sparks in 2017

Hard work pays off! "American Idol" alum began her weight loss journey by walking around her neighborhood and the rest was history! Her favorite workout? Zumba.

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Sara Rue in 2003

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Sara Rue in 2016

The "Rules of Engagement" star is a total fan of Jenny Craig for its simplicity. She looks incredible and totally glowing!

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Jonah Hill in 2014

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Jonah Hill in 2017

Talk about a transformation! Hill has lost weight and gained weight through the years -- depending on the movie he's working on -- but his latest transformation is absolutely jaw-dropping.

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Christina Aguilera in 2012

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Christina Aguilera in 2013

Smoke show! The songstress dropped 20 pounds over the course of one year. Doesn't she look incredible?!

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Miranda Lambert in 2012

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Miranda Lambert in 2013

The country crooner slammed critics who accused her of having weight loss surgery. She revealed that she dropped the pounds the old-fashioned way -- eating right and working out with her trainer!

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