ProLon® Fasting Mimicking Diet – DAY 5 Final Day


ProLon® Fasting Mimicking Diet - DAY 5 Final Day

There are many known and proven advantages to fasting and apart from the obvious – losing weight, fasting can speed up metabolism, boost the immune system, slow down the ageing process and help cut the risk of heart disease and cancer.

The problem, of course, is that it’s not easy, or particularly pleasant to endure. You want to reap all the benefits, but not go through the physical side effects ie headaches, fatigue and a rumbling stomach.

ProLon® is a patented five-day, Fasting Mimicking Diet (FMD) scientifically developed over a 15-year study by Professor Valter Longo and his team at the Longevity Institute in California.

Broken down, it’s a ready-packaged set of 5 daily meal plans. These consist of a variety of soups, crackers, olives, bars, teas, supplements and an energy drink, all nutritionally balanced to ‘fool’ your body into thinking and behaving as if it’s fasting.

ProLon is the first Fasting Mimicking Diet that nourishes your body while promoting regenerative and rejuvenating changes, including effects on a wide range of markers that contribute to ageing, such as cholesterol, fasting glucose, and inflammation.

The FMD has also been designed to kick-start your immune system and is 100% plant-based and 100% gluten-free. Most people would only need to do it twice or three times a year to achieve results.

There’s a lot to read up on how ProLon works and I’d recommend doing your own research first and running it by your doctor before you go ahead.


  • 5 cartons of food
  • A large drinking bottle
  • A detailed nutritional breakdown of every item
  • An instruction booklet; how to prepare the soups and dilute the energy drinks
  • Suggestions of what to eat during transition (day 6), health notices and precautions

Day 1  = 1,090 calories – 10% protein, 56% fat and 34% carbohydrate.
Days 2-5 = 725 calories each – 9% protein, 44% fat and 47 % carbohydrate.

The Fasting Mimicking Diet (FMD) is the first meal programme made of healthy natural ingredients that someone consumes for five days while his or her body is not recognising that it is eating, and therefore remaining in a fasting mode.


This diet does need a little forward planning; read the literature thoroughly and remember that day 1 is the easiest (this is a guess here, I’ll know for sure by the end of the week), because it has the most food, and day 3 with the least, is going to be the toughest.

You should refrain from all physical exertion anyway, but on day 3 in particular, keep activity to a minimum. However, you still need to fill your day with things to do to prevent boredom and stave off hunger.

If possible, a couple of weeks beforehand, try to wean yourself off coffee and cut down on sugar to help prevent caffeine/sugar withdrawal headaches. Make sure everyone knows what you’re doing and that you will be mostly relaxing for the duration (any excuse).

You can’t microwave the Minestrone or Minestrone with Quinoa soups, they have to be prepared on the hob, something to be aware of if you’re taking them into work.

There is a meal plan suggestion menu, but as long as you eat everything in box one on day one, then you can decide the order. You can’t swap the contents between boxes.

I like soup, I like crackers (kale though?) and I like olives – how hard can it be?

My idea is to update this post with notes on how the food tasted and how I felt at the end of each day – or the next morning if I’m too weak to type, ha!


  • Tea x 2 (Spearmint, Spearmint Lemon)
  • L-Bar (Almond, coconut, macadamia nut, pecan)
  • Algal Oil supplements
  • Tomato Soup
  • Olives
  • Kale Crackers
  • NR-1  supplements
  • L-Bar (Almond, coconut, macadamia nut, pecan)
  • Minestrone soup
  • L-Bar (Choco Crisp)

ProLon® Fasting Mimicking Diet

The L-Bar. Well, this certainly won’t win an award for the prettiest looking snack bar, although it’s a decent size.

The first bite tastes dry, but once you chew it, the taste of honey comes through with the nuts and coconut.

I found it very sweet, but that might be my taste buds, as I’ve been weaning myself off sugar (and coffee) for the past week, so it was a welcome shock to the system.

I then did what I usually do with a sweet treat, I chopped half of it into tiny pieces and put it in the fridge. That second half was much appreciated at 11 am.

The tea was fine, it’s spearmint and lemon tea, there’s not much else to say!

Tomato soup – This was really nice. It was like a superior cup-a-soup without clumps of powder or that salty artificial flavour. I diluted mine in 400ml of water, which made it slightly watery (300ml would’ve made a better consistency), but did produce a good-sized (filling) bowl of soup.

The four Kale Crackers are pure evil. They taste green (I think you know what I mean), and I defy anyone to say they’re tasty. I could only manage 3 and that was because I broke them into tiny pieces and put them into the soup.

Bonus! There were 6, not 5, salted olives. There are two packs of olives tomorrow, so that’s something to look forward to.

Minestrone soup – Absolutely delicious! Because of the dried brown beans, peas and carrots, this has to be cooked on the hob, but that’s fine, because you’re joining in with dinner preparations, and then sitting down to a hearty (shocker!) bowl of soup. I had another 500ml bottle of water with this, which brings my total to 4 spread out during the day and I felt really full.

I had the L-Bar  Choco Crisp Bar at 8-30pm, slightly later than intended because of all the snacky bits during the day.  Although I nearly had heart failure when Mark popped a piece into his mouth and then immediately spat it out into the bin, saying he didn’t like dark chocolate.

It didn’t taste as sweet as the nut bar and there’s a definite aftertaste of wheatgerm, but it was a pleasant enough chocolate hit.

You are allowed a cup of unsweetened black tea or coffee, once a day. I didn’t have any today, but I’m looking at day three and thinking a small coffee might lift me in the morning.

I knew this would be the easiest day.


  • Tea x 4 (Spearmint, Spearmint Lemon, 2 x Hibiscus)
  • L-Bar (Almond, coconut, macadamia nut, pecan)
  • Mushroom Soup
  • Olives x 2
  • NR-1 supplement
  • Minestrone & Quinoa Blend soup
  • L-Bar (Choco Crisp)
  • L-Drink (Orange flavour)

ProLon® Fasting Mimicking Diet

The day starts with a cup of spearmint and lemon tea and half a nutty L-Bar.

I diluted the L-Drink as directed. It’s orange flavoured, but it tastes a bit like distilled water. I popped one of the hibiscus tea bags into the drinking bottle which made it much more pleasant to drink.

For lunch, I had the first pack of garlic olives (again 6 in the pack, instead of 5), followed by the mushroom soup. I stuck to the instructions and only used one cup of water, which made a nice thick soup, although I didn’t like the chunkier pieces of mushrooms and fished them out. This was another tasty soup, although I drizzled over the liquid left in the olives sachet, which made it even nicer.

I had the tea, more water, the other half of the L-Bar and the sea salted olives (7 in the pack this time, oh yeah!) in the hours before dinner.

I made the minestrone & quinoa blend soup, which I had to dilute a little bit because it’s quite thick. It’s my new favourite soup.

I saved the Choco Crisp bar until last, and have only eaten half of it, but the night is still young!

Today was a breeze, but tomorrow is the tough one. I know I won’t eat the kale crackers, which leaves me with a nut bar and two bowls of soup for the whole day…


  • Tea x 4 (Spearmint, Spearmint Lemon, 2 x Hibiscus)
  • L-Bar (Almond, coconut, macadamia nut, pecan)
  • Tomato Soup
  • Kale Crackers
  • NR-1 supplement
  • Minestrone  Soup
  • L-Drink (Tropical Berry flavour)


I was dreading today, but it flew by, mainly because I was stung by a wasp first thing in the morning.  Apparently, when wasps are getting ready to hibernate their stings are much more painful, and 12 hours later, I can still feel the sting.

Because I was in a rush, breakfast was half a cup of black coffee. This worked out well because it meant I had a whole nutty L-Bar for the rest of the day instead of half a one.

I kept busy as planned and ticked off lots of jobs, which I think is the secret to this meal programme, keep brain and fingers busy.

The tomato soup was easy to prepare at work, I made the L-Bar last the day and the kale crackers were binned.

It was impractical to take the L-Drink to work, so I prepared it when I got home and used sparkling water to dilute it (I think that’s allowed).  I saved one of the hibiscus tea bags to flavour it, but it wasn’t needed. The tropical berry flavour is subtle but very pleasant.

We ate dinner very late tonight 9.30 pm, which again worked to my advantage.  The minestrone soup was delicious as usual. I have to say again, that the soups are really good, a thick consistency, lots of flavour and lots of pieces of vegetables and beans.  We always have our soup in bowls at home and I think this helps make it feel more like a ‘proper’ meal.

I’ve had no side effects so far, I’m sure this is because I cut back on sugar and coffee last week, I had some cracking headaches then.

One interesting observation that was pointed out to me, and I have no idea if this is connected to the fast or not, is that my eyes are very clear and white.

Energy-wise, I’m fine and I’ve slept well and soundly so far.

Hmm…I’ve just realised that day 5 has the same menu as today.


  • Tea x 4 (Spearmint, Spearmint Lemon, 2 x Hibiscus)
  • L-Bar (Almond, coconut, macadamia nut, pecan)
  • Vegetable Soup
  • Olives x 2
  • NR-1 supplement
  • Minestrone & Quinoa Blend soup
  • L-Bar (Choco Crisp)
  • L-Drink (Orange flavour)

ProLon® Fasting Mimicking Diet

Day four begins with a black coffee. I’m feeling fine, although a tiny bit constipated this morning – sorry, you’ve got to hear the gory bits along with the good stuff.

I’m full of energy after another good night’s sleep and I tackle all the little jobs I kept putting off. Nothing too strenuous; rearranging cupboards, paperwork and a few emails resulted in a surprise 18 Pengo points (= £18.00!) from Omorovicza. Reader, I bought the Introductory Christmas Set, because I’m obviously saving £18.00, not spending £51.00.

I don’t care much for the orange flavoured energy drink, but diluted it with sparkling water and it was fine.

After I wrote the above, I spent a few hours cleaning the house, taking the iPad with me and watching all 3 hours of the Storyville documentary by Bo Lindquist, about the not so ‘super’ surgeon Paolo Macchiarini, on BBCiPlayer – highly recommended.

The usual routine for the rest of the day – the nutty L-Bar with the tea. No need to refrigerate the L-Bars, the nutty one doesn’t firm up and the choco one firms up too much – keep them both at room temperature.

Lunch and I discover the vegetable soup is my least favourite, it’s perfectly nice of course, but the ‘veggie bits’ are too small, I kept thinking how much a drizzle of chilli oil and a handful of parsley would improve it no end.

I love and live for those two packets of olives. Even when Mark brought home a huge tub of shiny fat olives mixed with garlic, chillies and peppers from some ‘exotic deli’ he discovered (which turned out to be a pop-up shop in Brent Cross), and kindly wafted it under my nose, I didn’t freak out. This surprised us both because I can be a bit of a serial complainer, but I haven’t moaned once that, “Oh! I’m so hungry.” or “This is too hard!” This is where the ‘mimicking’ part comes in, I haven’t felt deprived or in truth, hungry, during this pretend fast.

Minestrone & Quinoa Blend soup is always a joy (because it’s so filling), and at 10 pm, I still have one cup of hibiscus tea left and the choco L-Bar to go.

Tomorrow is extremely busy, and I’m out and about a lot with the family. I’m going to skip a scheduled meet up at Starbucks for a lunchtime bite, and a family dinner in the evening. This sucks of course, but it’s also the last and I think, the hardest day. I get through tomorrow and I’ve done it. No drama.


  • Tea x 4 (Spearmint, Spearmint Lemon, 2 x Hibiscus)
  • L-Bar (Almond, coconut, macadamia nut, pecan)
  • Algal Oil supplement
  • Tomato Soup
  • Kale Crackers
  • NR-1 supplement
  • Minestrone Soup
  • L-Drink (Tropical Berry)

ProLon® Fasting Mimicking Diet - DAY 5 Final Day

A hectic end to the fast. Went to bed at 1.30 am on Friday (Saturday morning really), and got up at 5 am to spray paint my youngest son’s hair white for Comic-Con – note to self, he was Soldier 76, not Passenger 57, as I kept telling people.

I had half a black coffee and a nibble of the nutty L-Bar which, in hindsight, I should have popped into my bag. I didn’t get home until 4.30 pm and it wasn’t ideal, but I only had bottled water during the day.

The crackers were binned and I had the tomato soup at 5.30 pm.

We went out again and came back at 10.30 pm. I drank the tea along with the rest of the L-Bar. I made the soup, which I was very grateful for, and so happy it was the filling minestrone one.

That was it, job done!


Transition day. Juices and soups.

I suppose you could call this the real final day. We’ve bought a lot of fruit and veg to make juices (I’m not sure I can face soup for a while), and I have whole grain rice and a small fillet of salmon for dinner.


7lbs lost. I know I will put about 2lb back on fairly quickly, but I’m determined to keep the rest off, especially with Christmas around the corner.

My eyes are clear and sparkly and my skin didn’t break out – hurrah!

Also, and this is huge for such a big weight loss in one week, I don’t look gaunt and my neck isn’t wrinkly. This could also be down to me using every anti-ageing gadget I own in the evenings (all that free ‘me’ time!) Plus, massaging in rich moisturisers and creams.

Apart from my prescribed Thyroxine, I didn’t take any supplements aside from the ones in the ProLon fast.

I’ve never felt tired on the fast, although I have slept soundly, so obviously, I’m rested.


Plan in advance, this includes going out – it’s not a ‘social’ diet, and what you’ll have to eat on day 6.

Try to cut down on sugary food and coffee one or two weeks before starting the fast. I really think this is the reason I didn’t experience any awful side effects or headaches.

Drink lots of water, I think 1.5 – 2 litres is a reasonable amount. Plus, the L-Drink diluted with sparkling water makes it more palatable.

Stay busy, especially in the evening. I think the time between 7 and 9 pm is a danger zone for most people.

Keep the small card with the meal plan with you at all times – it’s strangely comforting. If you’re feeling hungry, you can look at it and see what’s coming up later, or during the week.

You can make the L-Bar last all day, it’s especially nice to have a little piece with a cup of herbal tea.

Know that day 3 will be a shock to the system.

Buy herbal tea! You’ll get a taste for it and it’s a healthy swap for tea or coffee.

Try not to be too smug. My family marvelled at my self-restraint on day 3, but they’re thoroughly bored with me talking about it now.


Back to normal eating.

ProLon FAQ

ProLon will launch in the UK later this year for around £150.00.

Five day ‘fasting’ diet slows down ageing The Telegraph
Do fasting diets really work? The Spectator
The diet that mimics fasting appears to slow ageing USC


Head to FITNESSVOLT.COM for their Intermittent Fasting Calculator and more information on the health benefits of fasting.


  1. damjanznidarsic
    January 2, 2017 / 7:23 pm

    Hi, thanks for this in depth post! I find this fascinating. Any chance you can get me in touch with someone that sells these?

  2. January 2, 2017 / 8:25 pm

    Hi there,

    Glad you enjoyed it.

    ProLon hasn’t launched in the UK yet, but if you send your email address to I will forward it to the PR people who should be able to help you.

  3. February 26, 2017 / 2:24 pm

    Any indication of what is in the energy drink bottles or what could be used as a substitute?

    • March 1, 2017 / 10:05 pm

      Hi Matt,

      I can tell you exactly what’s in the energy drinks – which are approx 20 calories per serving.

      Purified water; natural vegetable glycerin; natural orange (or tropical berry) flavour, potassium sorbate.

  4. April 5, 2017 / 2:12 pm

    Hi Anne-Marie, I loved reading your post! I have been following Prof Longo for a long time now and am fascinated by his work around the fasting mimicking diet. I’m a nutritional therapist looking to stock prolon’s product one it launches (due to be very soon!). Did you manage to keep some of the weight off or did you find you put it all back on fairly quickly? A very interesting read.

    • April 6, 2017 / 2:16 pm

      Hi Vanessa,

      I did manage to keep it off until late January, which wasn’t bad considering I over indulged – like most people, over Christmas.

      I understand why people would use this meal plan to lose weight before the holiday season, but actually, because you’ve not eaten any ‘rubbish’ i.e. overly processed foods/junk for 5 days, this would be the ideal kick start to a healthier regime.

      It would also help wean people off sugar, the sweet treats in this plan are ironically too sweet and actually, that was a good thing for me, my sugar intake has definitely decreased.

      I would love to read more feedback from others who have tried this plan ad compare experiences, so please keep me informed.

  5. June 9, 2017 / 9:14 pm

    Thank you so much for this post. I am a chiropractor and functional nutritionist in Michigan and have known the benefits of fasting but have been squeamish to try it or suggest it to my patients until I read your post.

  6. August 22, 2017 / 10:34 pm

    Just starting the plan today. Your posts were quite helpful but also fun to read. However, we disagree on one point…I thought the Kale Crackers were terrific! Amazing, yes? 🙂 Thanks again and wish me luck….4.5 days to go!!!

    • August 23, 2017 / 9:02 am

      Hi John,

      Best of luck, let me know how you get on. My number one piece of advice is to keep busy, especially on tricky day 3.

      With all due respect, are you sure you’re not eating part of the cardboard packaging instead of the crackers?

  7. David
    July 30, 2018 / 8:30 am

    Just finished day 5. Just want to say, my experience was similar to yours except that I love the kale crackers! To each their own :).

  8. unfadedbeauty
    July 30, 2018 / 3:44 pm

    Hi David,

    You must have a rock iron constitution to enjoy those evil things!

    If you ever come back here, then let me what was your toughest day?

    • David
      July 30, 2018 / 3:57 pm

      I think there were moments when the third day seemed tough, but more psychologically, because I new I wouldn’t have the olives or the choco bar. In actuality, it wasn’t so hard to get through it. Similarly with day 5, after lunch, knowing that all I would have until the next morning was a soup. But again, it wasn’t so hard. On the other hand, the ease of the diet, not having to think about what I was going to eat or having to prepare it, was wonderful. And the complete mindfulness regarding every morsel I consumed, that was a really good discipline to have experienced. It’s not the first time I have followed a regimen with a lot of discipline, but it’s always a good place to go back to.

      P.S. I see that I am not the only one who responded that they like the kale crackers! 🙂

      • Joyce Kay
        November 12, 2018 / 4:48 pm

        I loved the Kale crackers too! This is my second box and the crackers are actually smaller than the last box and only have 4 instead of 5! But still glad they are in the box! I eat half at lunch and half at dinner. This is an easy way to “fast”. I lost a total of 3 pounds with the first box for 5 days. So, pretty reasonable.

  9. unfadedbeauty
    August 9, 2018 / 8:42 pm

    I agree that having everything planned for you makes life very easy. I would love to eat ‘normal’ meals that way, every day. Oh for a personal chef.

    The kale crackers – I can only assume I had a bad batch!

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