Tuna and Water Diet
Ready for a hardcore diet to get lean in a matter of days? This tuna fish diet is used by professional bodybuilders to prepare before the competition. It requires an iron willpower but guarantees 100% results.
3 Day Tuna Diet
Here is how it works:
- Normally this diet is followed for 3 days.
- Take in 6 equal tuna servings. Once each 2,5 – 3 hours.
- Drink as much water as possible. At least 3-4 liters. Water fills your stomach and? helps you not to feel hungry. There is no limit. Drink as much as you can.
- Take at least twice a day some vitamins. This is crucial since you won’t get much vitamins from tuna during this diet.
- You will need at least 1 to 1,5 grams of protein per pound of your weight (aroung 3 gram per kilogram).? Tuna’s marvelous as it contains 26 gram protein per 100 gram tuna. Here are two handy formulas to calculate your tuna serving size:For kilogram calculation: (bodyweight * 3 * 100) / (6 * 26) = bodyweight * 300? / 156 = 1 tuna serving (in gram)
For pound calculation: bodyweight * 100 / 156 or bodyweight * 150 / 156 = 1 tuna serving (in gram)
Don’t think it is an easy task, but the harder the task, the greater the payoff. For beginners I suggest to start the diet on friday evening after the work and keep it for two days. The reason is that you cannot control the regular food intake very well during a workday as you work normally 4 hours (or more) non stop and get only one break to eat. Moerover, two days tuna fish diet is not as hardcore as 3 or 4 days. I recommend this for all beginners. If you can keep this diet for two days without problems, wonderful, you can keep it for one or two days more.
Stay strong and be aware of forbidden foods. Your energy levels may fall in the first 1,5 days. You may feel very weak as never before. This is teh time of your spirit to stay as hard as iron and keep the diet! Your body will soon adapt and the strenght will come back.
Personally, I am doing this diet at the weekend every 2-3 weeks. It helps to burn the extra fat I may have gained during that period. It is a wonderful way to stay lean 365 days a year!
Update: Best read

Wow, I’ve got tons of emails and questions regarding this diet over the past two years. Here’s a tip to all of you who need some ideas to combine tuna with healthy veggies: get this book from amazon which is absolutely awesome: The Anti-Inflammation Diet. Apart of being a great read on what food has anti-inflammatory effect (which means less risk to get cancer) it has a few awesome recipes with tuna like the Granny’s Tuna Salad (my all-time favorite)!
Hello all,
I did this diet for 6 months. Although i know its not good to but continuous stress on your body like that i went form 305 to 208 in only a matter of 5-6 months. i know have more muscle and look so lean people cant believe it. I always recommend this diet and im in the navy. I never talk about any other way. Yes it does take hard work and dertermination. I also did work out all the time but it was the tuna diet. I ate only tuna and green beans for that period of time. Always consuming as much water as possible.
Wow, Dinkle, this is a VERY good result. To combine exercise with this diet does the trick. Although green beans did probably provide you with some Vits and Minerals, I’d still suggest taking in some extra veggies and maybe fruits.
Anyways, thanks for sharing! Outstanding result!
Hello! I am currently starting this diet today. I hope this works for me too.
canned tuna in water contains some salt right? I thought salt can cause water retention in our bodies. do you drain it all of with water?
any canned tuna can be used in the diet?
is it ok if you don’t eat specifically on time but eat the specific amount based on my pounds?
please answer my questions. thanks!
Hello,
I think this diet sounds great but I worry about the amount of mercury I would be consuming. What are the health implications and has anyone had any problem in the past with this diet?
Sparky, are you around?
Hi Sparky,
Ok I think I have a problem. I just discovered this diet and I’d really like to try it especially after hearing about the awesome results people have gotten from it.
I like tuna fish, but I’ve only eaten it after adding miracle whip, mustard, a hard boiled egg, and relish. . .Would doing this be the same even if I exercised or would I have to just eat raw tuna out the can?
Currently I weigh around 240 which is not healthy for my height or age, I’m 5’6 n 20 years old.
PLEASE HELP. . .Thanks a lot
-Ashley
can some one tell me excatly what this diet plan is like for breakfast what do I eat tuna????and lunch the same can I have soup and tuna for dinner???
where is sparky
Hello everyone,
sorry for my absence, been busy for some time preparing a trip…
I want to stress again that this diet should only be done for a short period of time. It consists of pure tuna + water and as many vegetables as you want to still your hunger.
Of course, you could add additional stuff, but then it wouldn’t be “tuna and water” diet.
I don’t know if this would work. But, I guess, if you excercise enough and burn those extra calories the result would be about the same.
And don’t forget water!!
Hi there sparky,
started the diet on monday it is now sunday here in aussie and i have done the diet, almost full force, i ate loads of tuna but also mixed in variety and had salmon, and for brekkie poached eggs, loads of water bout 4 litres a day and have started taking green tea tablets, i went from 61 kilos to 57, and thats also without exersize, i have been abit sick with flu, I am better now so this week i reckon another 7kilos, as I workout 2 hours in the morning and do 2 hours at night!!!!
Hello,
Is it ok if you eat the whole serving once? I realized I don’t get hungry as much if I do that than taking it 6 portions.
I hope you’ll answer my question.
What kinda of tuna can you eat like the kind in a can? or like dead for real tuna
I’m about 20 pounds overweight and and have been on a tuna straight out of the can and hard boiled egg diet for eight days. I’ve lost 11 pounds so far!!! I take two Centrum multi-vitamins a day…one when I wake up and one at night. I also drink crazy amounts of water everyday. This will test you but also motivate the hell out of you when you start seeing weight just fall off of you….I don’t exercise at all either, and I’m a 29 yr old male
Hey I was wondering if I had tuna all day and then a chocolate shredder from smoothie king. Would there be weight loss.
Hi Sparky – I TYPICALLY HAVE A CLEAN DIET, BUT FOR THE LAST 4 DAYS, I’VE BEEN STRESSED AND HAVE FOUND MYSELF BINGEING ON THE WORST FOODS…DOUGHNUTS, FRENCH FRIES, PIZZA, COOKIES, ETC. I’m sure I’ve gained 10 pounds!!!! I want to get back on my clean diet, and am thinking about doing the tuna diet as a jump start to my normal eating. As we know that it takes longer to loose the weight you put on, if I do the tuna diet for 3 days, will I loose the 5-10 pounds that I’ve put on in the last 4 days! Please, please, please help! I’ve worked so hard! I don’t want to loose my results!
diane, just try it! I’m sure it will help. Just follow the advice and you’ll do good. Tell me how it went.
I tried this diet a long time ago and it worked great! I am 5′ 4″ and began the diet at 139 lbs. By the end of the first day, I couldn’t do it anymore. I hate tuna. So, I began adding things to the tuna, like hot sauce or melted cheese, anything that would make it a little more tolerable. By the middle of the third day I couldn’t take another bite of tuna. The results? I lost 8 1/2 lbs. It was amazing! I haven’t been able to make myself do it again, because now I hate tuna even more than ever before. I still rave about the diet to everyone who needs to loose some weight quickly. I want to do it again, but just can’t bring myself to eat tuna again. A friend suggested that I try using canned chicken instead of tuna. So, I’ve compared the nutrition labels and they are very similar. The price is even the same. So, I will soon start a 3 day chicken and water diet. I don’t hate chicken, so this time it should be a lot easier.
Also, if you have the extra money, go to a spa and get a body wrap! They work miracles, taking inches off of your body! I am a hard-core fan of them! If you don’t have the extra money, you can order seaweed off of the internet and add it to your bath every 4th day to soak in. It’s not as effective as a body wrap at a spa, but you do loose inches in your bath and for 3 days afterwards. The inches are not visibly noticable, usually, but if you measure yourself from head-to-toe, you will see the inches come off and you will never quit using it!
I started the tuna & water diet this morning. So far so good, I am feeling a little bit weak, but I’ve dealt with worse. I am really needing to loose 10 pounds in the next 10-15 days. I am 6’1, and started working out and dieting again 2 1/2 weeks ago. My weight started at 231, and now it is at 218. But it’s been at 218 now for the past 5 days, so I am going to try the tuna and water diet for 5 days straight to see what happens. I will come back here and update everyone on my outcome. I am hoping to get down to 208.
hi guys! im wondering if anyone has gained the weight back?
most of the times when i lose weight i never put it back on no matter what i eat…but sometimes when i do a diet for few days i seem to put it bak on even without eating much bad stuff..kinda confusing… coz i dont really eat bad stuff…
have you guys kept it off without any probs?
ofcourse once youve lost weight you can do 50/50 of the diet right?
anyone need a tuna diet buddy am here lol riadaone@hotmail.com as i think it would be better doing it together…
Aliyah,
When would you like to start?
HI Sparky,
Sparky,
I desperately need a diet but one that will allow me to drop fat and keep muscle. I havent been lifting weights as I should and my body is turning to fat. I’m 5’11 and my body fat percentage is 40.5% and I weigh about 177.0. I workout and will be motivated to workout more and lift weights which works better for my body type than only doing cardio. How much tuna should I consume? ( a little confused) Thanks!
hey krissy, you dont need to measure any amount, i find if you eat it whenever your hungry then it still works, and gives you alot of energy too, drink alot of water, black coffee as much as you want.
you can eat tune from the tin in brine or sunflower oil depending on what you prefer, i normally get the tuna steaks from sainsburys..they are better… so i eat tin and steak whatever i feel like, as long as its just tuna and water and black coffee you will lose alot of weight and feel good!
ur body fat needs to get down to atleast 26 percentage. do about an hour of cardio a day and some weights….
p.s i started today…. so start tmrw… and give each other feedback,,ive replied to ur email so mail me bak
goodluck
Hey Sparky. I am 27 yrs young 6′ and I let myself go to 260 lbs. Sad I had a drinking problem (beer) Im clean and need to lose this wieght ASAP. I was wondering how much tuna i should consume a day, and also if I made strictly veggie soups if that would change up the diet to where it is not effective. I walk my dogs 60 min a day as well 30 in the morning and 30 in the evening. I look forward to your response. Thank You
John
(ashamed)
Hey John, nothing to be ashamed of! As I told before, this diet has colossal results, but shouldn’t be done for more than a few days in it’s “strict” version. Depending on how much weight you need to get rid of, you will need to keep up with good eating and workout habits. Adding veggies and other healthy food is a must for a prolonged diet.
Walking 1h/day is good. Try to incrementing time and pace graadually. You’ll see yourself jogging the same distance in no-time.
Some friend of mine told me once that perisistance is the only unifying quality of all successful people (be it in personal life, business or health). If you have the iron will to keep up a strict workout/diet plan for a few months, you will look like a model before summer. Thumbs up and good luck!
Thanks for inspiring us sparky
let’s support each other e-mail me a_drea19@yahoo.com Good Luck!
Due to safety concerns about the amount of mercury contained in tuna cans. Does eating the same amount (grams) of fish (example: tilapia) wil produce the same weight loss?
I started this diet the first week of Jan 2009 and so far I have lost 10 pounds, I eat porridge for bfast, one tuna can with sauce and rice cracker for lunch and at night a quick snack or soup, also when i have cravings I have a candy bar or small portion of veggies or fruit. It really works and everyone noticed how slim I;ve got!
i just started my diet today, and need alittle bit of support now that my boyfriend doesnt belive i have to loose weight. iused to weight 140 lbs. and not im close to weighting 150. not to mention the fact that im 5’4 with a size DD chest. so im rwally just looking for some daily inspriration. im sure ill be be commenting fequently. also, i have a question how can i stop my sweet tooth cravings when i do have one?
I’m starting this diet for 3 days only and I intend to eat healthy the following 4 days…but my question is..what should I eat to avoid gaining the pounds?
Thanxs in advance.
Hey, I am going to try eating tuna and eggs for 4 days. I tried eating 1 egg and a half can of tuna once for lunch&dinner and when I weighed in the following morning I lost 2 pounds. Great! I’ll update you guys this saturday.
OK so I’m starting a slightly modified diet today (concidering it’s LENT it’s not too much of a problem) .. My weigh in as of today is 207 pounds .. Will check back in after a few days
My eating stuff:
6am: 1 packet oatmeal | Cup of Black Coffee
10a Black Coffee
Every 2 or 3 hours: 2 cans of Tuna
As Needed: Carrots and apples and water
Excersise: Walk about 45 or so minutes a day (about 3 miles for me)
Don’t know about the gym stuff yet .. Will keep you informed..
Talk to you in a few days!
i think i am goin to try this diet . i’m 5’9 and used to be 135, i now weigh 170. its called moving to america. keep you all posted on my weight loss
i’m 4’11 and about 98lbs but i used to weigh 87 so i want to get back to that. i used to do gymnastics and field hockey so i have like a manly muscle build. how do i get rid of that? ive been eating 1000 calories or less per day, the first few days i lost 2 lbs but then gained it back. i run at least 3 miles a day 5 times a week plus ab and arm work and ellipticals on alternate days. i will try the tuna diet but what will help me in the long run?
i my name is judy. i have really put on a ton of weight.with in a yeari put on 60 pds.i am very unhappy with myself.i am going to give this a try.i want the old judy back by june or july.can this much wieght be lost in that amount of time?i will start today and keep you posted!!!!
hey sparky im trying the tuna diet two hours and i feel like hammered dog poop… that is what jimmy says, i am his wife and had him try this diet with me so he can see and feel the way i do. but i know this diet works to lose weight i like it, because well whats for breakfast? tuna.. whats for lunch? tuna… Whats for DINNER? tuna… so the decisions are easy. i just dont do good after the diet i want chocolate cake then i go back to square 1… Somehow my brain rules and wins all the time i did quit smoking on my own so i know i am not weak but something in the catagory of food just rules my life. when im hungry really hungry i lose it(control) helpif u think theres any hope…
hey sparky
im in the military and need to lose some weight fast. i bike everyday for at least an hour and then do weight training. im 6’0″ and weigh 220 lbs. i like to think i have a muscular build, but as of late i have let myself go. will this diet get me back on the right track? thanks.
,l.
Sparky,by doing this diet for one week only tuna and water how much weight can I possibly lose in that week only?
Hi all- I started this today. I am 5’4″ and have gained 20 lbs. in a year – now up to 136. People are shocked when they haven’t seen me for awhile becasue the weight on me really shows
I am going boating with lots of friends in one month and would settle for 10 lbs. I do eat the tuna with lettuce and a bit of mayo. Wish me luck and thanks for the support board!
Shelby, it depends on many other factors: your activity level, stress/sleep patterns, diet, etc. One week is lots of time, i’d say you can lose some 3-4lbs. More is possible, but unhealthy.
pbwh, good luck!
I have been trying to find a diet that I felt comfortable with and this seems to meet my requirements and I do feel it is something I can do. I am happy to find that many of you have found success. I hope to be sucessful as well.
Thanks!!
~V
Hi guys, I am starting this diet today as well, hoping to lose weight quickly and build muscle mass. Are there any health risks with this diet? Can anyone recommend any health supplements to aid in weight loss? I have recently movwed to Greece, so I hope I will not have difficulty finding the same as in Canada. Please help! Thanks!
Sorry for my spelling mishap! haha lol
i also tryed the tuna fish diet for 3mths and lost a total of 32lbs. i eat a lite yogurt for breakfast when hungry and a tuna fish sandwich and yougur for lunch and fruit if i got hungry later on. now im starting back the diet after taking a month of i havent gained any weight back suprisingly. wish me luck on these last 38lbs… my goal is 125lb my august!!!!
hello everyone
today is june 8 2009 and today i start my tuna diet and lots of water. my brother did these diet and he was 360 lbs and now he is 250 lbs in a matter of seven months or around that.He wants to get down to 200 lbs in two or three months. so I wish and pray for me and everyone else who trys this diet.
hey sparkey…i want to make sure i read this diet correctly…is it so that i can eat as many veggies as i want?
Keep up the great work on this blog
, Great writing! P.S. I just love your theme, where did you get it.
@aliyah i did the tuna diet ween i was 200 lb i am a short guy only 5.6 and everyone was making fun of me because i was fat ,i loose 40 lb in 2 months ,i have to buy new clothes ,i stop because people was telling me that i look sick with all the weight i loose ,well the results was i gained 20 lb back in the last year , now i am on it again and i love the results