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Special K Challenge

Special K Challenge Review (UPDATED 2024): Don't Buy Before You Read This!

Are you up for this special challenge?

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QUICK FACTSQUICK FACTS Start the Diet Now Advertisement
  • Established: Parent company Kellogg’s in 1906
  • Founder: Will Keith Kellogg
  • Stock Symbol: K
  • Headquarters: Battle Creek, Michigan
  • Accessibility: Online communities, book
  • Diet Type: Low-calorie, two meals per day replaced with cereal
  • Gender: Female

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You've probably seen the commercials - excited women dancing around with bowls of Special K cereal. You probably don't get this enthused after your morning breakfast, but does yours help you lose weight?

The Special K Challenge says that if you'll follow their simple dietary guidelines, including two bowls of Special K cereal each day, you can lose up to six pounds in just two weeks.

The Special K Challenge promotes a community effort, by partnering with Yahoo Health. There you can join the Special K Challenge group, to participate in forums and chats with other challengers and access weight loss tips.

You're advised to visit with your doctor before beginning the Special K Challenge.

  • A simple approach
  • interactive online community at Yahoo Groups
  • Fast approach to weight loss that is relatively healthy
  • High fiber diet

The Special K Challenge is much like a meal replacement diet. You'll begin the day with a bowl of Special K cereal for breakfast with skim milk and fruit. Then replace your typical lunch with a bowl of Special K cereal. You'll then enjoy the dinner of your choosing - the healthier the better. Throughout the day you should consume plenty of fruits and vegetables to replace unhealthy snacks.

Special K has a variety of cereals and snacks to help you stay committed to the program. There are six cereals including Red Berries, Vanilla Almond and Chocolatey Delight. There are also many flavors and varieties of snack bars, protein meals, diet shakes, cereal bites and bars. Plus, the recent addition of Special K2O Protein water in refreshing flavors like Strawberry Kiwi and Lemon Twist. It should be noted that some of these food items, like the protein bars, contain partially hydrogenated oils- which means they are a source of trans fats.


There is not any guidance provided from Special K regarding exercise.


If you're looking for something to jump-start your weight loss, maybe you can try this for a week or two. Maybe it will be a physiological boost for you to continue. Otherwise, the idea of an obviously temporary eating plan seems like a losing proposition. Be sure to read the food labels of all of the Special K items as you'll want to avoid the ones that list partially hydrogentated oil in the ingredients, as this is a source of trans fats.

Common Misspellings  Common Misspellings

Special K Deit, Special K Diet, Special K Challenge Diet, special k diets

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User Feedback

(Page 1 of 10, 191 total comments)

Sandra Adams

Lost the weight and kept it off...starting another 2 weeks today...

posted Jun 4th, 2018 12:39 pm

Matthew Anaya

I decided to do the special k diet about 2wks ago, I am 5'9 and I weighed in at 231 and now 224! That's 7 pounds... I counted calories and I ate fruits and protein snacks along with a regular dinner. But people cannot get fooled into eating however they want for their dinner, I was able to have discipline.

posted Dec 14th, 2017 11:56 am



It works! I have lost 70 lbs so far and losing more. I do the cereal for bkfst, bar for lunch (omg they are good), and chicken, and vegies for dinner. I make sure to be 1200 cals or higher to not have any health side effects. I also walk daily with the kids. I do just the bars for 1 week every other month to kickstart the diet again. It makes you lose 10 lbs just in that week, but not good longterm as it's well under that 1200 cal safety. Good luck!

posted Feb 23rd, 2016 11:44 pm


I'm doing the Special K challenge in conjunction with daily exercise and the results have been very good. I eat 1 cup of Special K Protein (lightly sweetened) with an equal amount of 1% milk for breakfast and lunch with bottled water and fruit in between. Dinner is a serving and a half of steamed vegetables, and two and a half servings of baked chicken. Add to that a 2 mile walk 5 days a week. I feel the Special K challenge is positively augmenting my desire to lose weight. I'm 5'9" and used to weigh 225 lbs. I've been doing this for about a month and I'm down to 211 and feel great. My goal is 190. If you're going to do the Special K challenge, team it up with daily exercise and a healthy dinner. Stay focused and dedicated. You won't be sorry.

posted Jul 24th, 2015 2:30 pm


I have purchased Kellog's special K two week challenge, and i want to now the proceeder for taking, and how many time i take per day, can u clarify me plz

posted Jun 16th, 2015 6:13 am

Arthur P


Special k is only promoted for women judging by the tv ad, what a shame i am a man and have been overlooked in their ad, this is a very poor way of promoting any product whether it is good or bad sexism is not welcome in my books and i will have to buy a mens cereal product by another company.

posted Feb 8th, 2015 6:32 am




posted Apr 29th, 2014 10:17 am



I had hit rock bottom 233 lbs at 32yrs old only 5'4". Now nine months later I'm 178 and still working towards my goal of losing 100lbs. I have used Special K throughout the process on and off so my body didn't get in a rut with it. I would say Special K was a life changing help for me!

posted Feb 22nd, 2013 1:44 am



I started the diet on Janaury 9, 2013 and have lost 6 lbs already (hooray) I have the cereal with a 1/2 bananal for breakfast & lunch and a regular dinner with no bread. Trying to drink lost of water and eat lots of fruits and also the Special K 90 calories bar as a snack. I haven't been able to exercise because I'm recovery from surgery but plan to start in Feb. This plan is working for me. Good luck to everyone on the plan.

posted Jan 14th, 2013 7:39 pm



Can teens do the Special K Challenge? I am 13 years old and i would like to know if i can do the challenge i am 5'51/2" and weigh about 140 and i would like to lose weight .

posted Mar 14th, 2012 2:53 am


Monday, Jan 16, 2012 will mark my daughter & my 2 weeks on this diet. So far, I have lost 5 lbs., more than my daughter because I weigh more. We have a protein shake for breakfast, a crisp & fruit for morning snack, cereal & milk & a fruit for lunch, crackers for afternoon snack, and one of the dinner recipes in the evening & dessert if suggested with the dinner recipe. We also exercise, Mon, Wed, Fri on a Bowflex treadclimber; Tues, Thurs & Sat using a pilates video. Rarely get hungry. Sometimes add a lot more veggies to evening meal. A favorite is smothered cabbage with carmelized onions (no sugar added). Plan to continue beyond the 2 weeks.

posted Jan 13th, 2012 6:32 pm



I've been on this plan since the 11th of January. I'm enjoying it. I'm following the plan and drinking lots of water and doing as much exercise (walking dogs & cleaning house) as much as possible. I've lost three pounds in three days! Yahoo!!

posted Jan 13th, 2012 6:15 pm



I've been on this for 1 week (yeah I know, not a long time) and GAINED 2 POUNDS!!!! I followed it exactly as planned, now what? Oh by the way, I exercise too.

posted Jan 13th, 2012 2:12 pm



I did this last year around this time, and I got down to my goal weight, just before I found out I was expecting #3. I'm looking to get back there again. I love all the bars and shakes, and the snack bars are great too, very filling. I also drank a lot of water, and tried to get some good excerise, but chasing babies all day long really helps with that... I think if you are looking for something to help get to started this is the way to go, I really saw results, and it helped give me the boost I needed. Also, you need to exercise at least 3 times a week for 30 minutes, and plan healthy dinner meals. It's common sense for most, but others need more guidence!!! Hope everyone is doing great and best of luck!!!

posted Jan 8th, 2012 11:16 pm


Today is my second day of the Special K diet and i like it so far except that i am hungry. I'm used to eating whatever i want but since i had surgery on my foot i havent been able to do much physical activity but im healing now so with a cardio program and this short diet i am very optimistic. I am 19 and 5'3" and 128. i used to weigh 110. I would like to get down to that but i know your only supposed to lose a few lbs with this diet so i think it will be a great jumpstart. Thanks to everyone who is so motivating!

posted Oct 24th, 2011 10:38 am


i actually just started it today i am very excited i hope it works! but what else could i do besides the speacial k and work out i know eat healthy and good meal plans?!

posted Oct 12th, 2011 11:32 pm


Well I tried this for the two weeks and lost 2 pounds of the 6 I want to loose. I was down 4 pounds at one point, but it didn't last more than a day. I swung around a lot on this diet. I did NOT loose any inches anywhere. I followed everything to the letter save for a single day that I went over 1500 calories. Most days I didn't hit 1100. All that sacrifice for little reward. Working out and even just walking each day is pretty much manditory for any weight loss, just eating less can help if you have a lot to loose, but if you are like me and only want to loose a pant size and a few pounds, it just won't do.

posted Sep 23rd, 2011 10:40 am


Im wondering if the challenge really works.im only 11 and i am '5.3.i already weigh 160 pounds and i have no idea what to do.im thinking of taking the challenge and spent an hour reading the comments.dont judge me just cause im only 11.plz. any suggestions?

posted Sep 17th, 2011 6:56 pm



Would the Special K Challenge be a safe for a 13 yr old?? i am only 13 yrs old ... i am about 5'3 and weigh 130 pounds i really am trying to lose weight and was wondering if it wold be safe to start this diet... i exercise regularly . i would like to start it but am still debating on weather it would be healthy for me only being 13 !! please respond fast i was thinking about going today to buy the stuff thanks :)

posted Sep 3rd, 2011 1:05 pm


I have been trying to watch the special with Dr Gupta abotu Reversing heart disease and on his website he mentions the number one food is Special K. I am excited to try it and will post once I lose some lbs. I have 4 stents in my heart. Will do anything to reverse this gene I inherited from my Dad!

posted Aug 31st, 2011 9:04 am


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