Good start but headaches


There is no added iron in Huel. All is naturally occuring from the main ingredients and is all no-haem. Non-haem iron has a lower bioavailability, plus there is pytic acid and calcium both of which very significantly reduce the amount of iron absorbed.


Thanks James, that explains perfectly why the Huel iron content is high and is necessary.

It’s interesting what you mentioned about iron uptake inhibitors…after some further reading I realised I’d been drinking coffee and tea (with milk) all week whilst at work and also taking a vitamin D + Calcium supplement (Tea & Calcium both being iron inhibitors) and Vitamin B to keep energy levels high.
When at the weekend I had neither brew nor supplement…which is when the headache began.

I’ve always had cold hands and feet my entire life, so I must be slightly anemic, probably due to poor diet / low iron levels. Now that I’m actually having the correct amount of iron and nutrients, maybe it’ll just take some time for my body to adjust.

I’m not giving up on it yet, as I mostly felt great the first week, I had lots more energy than usual and there were no carb / insulin crashes.


Hi @freddydeeb - are you drinking other drinks in place of the tea at weekends?

The cold hands/feet might not be anaemia; there could be a number of other explanations.


Just chilled bottled water, probably about 1 to 1 and half litres per day. My tap water is highly chlorinated and fluorinated, so I usually don’t drink that because it tastes so bad…and probably isn’t too healthy anyway.


Just an update to say after continuing to eat Huel for a further two weeks, the headache didn’t ever reoccur. I’m putting it down to my body adjusting to receiving a higher vitamin & mineral intake than it was previously used to.

I now have clearer skin, more energy and better concentration levels…quite a life changer really…no need to ever binge on shit food because of lack of time.


For testing if stevia/sucralose/sugar cause headaches, perhaps add some of the pure chemicals into capsules, then do a blind study on yourself. This would help rule out a lot of factors involved when testing it out via Huel itself.


Huel with vanilla has sucrolose and stevia. There is such a thing as a sucrolose migraine. Look it up.


I guess headaches and dizziness are a side effect of stevia too.


Just adding my experience here. I’m on day 3 of having one 3 scoop vanilla huel in the morning after my swimming workout. I never get headaches but I now have one that is staying all day. I’m usually a sweet tooth and have no issues with sugars. I stay hydrated too. I’m hoping it’s the body adjusting as I really like huel, it fills me up and keeps energy levels steady.


Detoxing can sometimes cause headaches…but as you are just having one Huel a day I wouldn’t believe that to be the cause. Sucralose can cause headache and migraine in some…I have even heard of people saying that oats give them headaches…I’ve not checked for scientific studies, and I’d imagine it to be rare.

Trouble is people get so many reactions to so many things it can take a while to find out causes and triggers.


Headaches gone. Eating less sugar caused it I think. Haven’t had any recurrence anyway. :slight_smile:


Just come across this thread, very interesting.
I have worked up to 3 vanilla Huels a day (3 scoops of Huel in 400ml water ), on my way to 4 a day. I get the odd headache but find eating something solid clears it, even if it’s just a chicken and mushroom pie ( love em ). Maybe with years of eating solid food and mainly crap is what my body is used to.And now as Huel is very nutritional, as well as low sugar and salt is having a huge impact on my body. I needed to lower my salt and sugar anyhow. I used to drink lots of full sugar coke every day and used to find if I stopped it for say a week I would get headaches and feel ill for days.
How do you 100% Huelers manage without solid food? Do you feel ok or do you get headaches?