Getting started: avoid the weakness trap

March 18, 2010

After spending more than ten years volunteering weekly in a vegetarian resource centre, I think I’ve gotten a pretty good handle on the reasons people adopt a plant based diet, and maybe more importantly, why they switch back.  Here’s the number one failure reason I’ve heard:

“I tried going vegan, but I just ended up tired all the time.”

And do you want to know the two biggest tragedies about this?  First of all, I don’t hear about it until it’s too late to do anything, because they’ve already changed back and the actual switch is the hardest part to trigger, and secondly, it wouldn’t have mattered because my first reaction was to get defensive and immediately think “they must be doing something wrong, a vegan diet is full of energy!”

After hearing it enough times and gathering enough data, and yes, swallowing my pride, I’ve come to realize that not everyone automatically succeeds on a plant-based diet, and when it comes to physical weakness and fatigue, it’s usually to do with one or two key factors:

Make sure you eat enough

Let’s suppose you’ve decided you’re going to switch from the most average diet around (which, let’s face it, isn’t terribly healthy) to not just vegan, but ubervegan!  Whole foods, no frying, etc.  You’re not a nutritionist, but you just know that a lot of colourful foods is going to be better for you than that hunk of dead animal with fries on the side.  And the range of flavours!  Incredible!

The problem here is that steamed broccoli simply doesn’t have as many calories as feast of roast beast, at least if you fill your plate the same way you’re used to.  You basically have two options, either dramatically increase your portion sizes or consciously add some more calorie-dense foods to your meal (the typically lower fat content of plant-based foods is usually the culprit in the calorie differential.)

Over time, you’ll have no trouble meeting (and then exceeding, possibly by far) your calorie needs on a plant based diet, but a lot of beginners make the mistake of judging nutritional content by how much of their plate is covered.

This problem is often compounded by one of the side effects of not getting enough calories: you lose weight.  For a lot of us, that’s a good thing, and we’re wired up to keep doing the things that give us rewards, so we’ll continue to eat the way we do, lose weight, and somehow manage to not associate the fatigue with the weight loss.  I know it sounds silly, but when you think you’re eating enough (and the majority of people have no idea how many calories they consume a day, vegan or otherwise,) it’s easy to attribute the weight loss to some magic property of plant-based foods, and not the obvious fact that you’re not consuming enough.

The solution to feeling weak as a new vegan is pretty easy: weigh yourself every day.  If it’s going down, eat more.  As long as you’re eating actual food, which I’ll talk about in a moment, and not, say, potato chips/crisps to meet the deficit, your energy levels will take care of themselves.

Eat well

The other trap that new vegans sometimes run into with weakness is due to an over reliance on processed vegan-friendly transition foods.  This is usually less of a problem than the simple calorie count above, but it’s worth a quick discussion.

While mock meats, cheeses, etc are handy, if you approach veganism by simply replacing animal products with their analogues and keeping everything else the same, you might be doing your body a disservice.  Don’t get me wrong; these foods are really useful, and we still consume them fairly often ourselves, but they’re heavily processed, typically high in sodium, and while I’m not a nutritionist, I can’t recommend them as a significant part of your diet.

Looking at it another way, if you ate nothing but hot dogs all day, you probably wouldn’t expect to feel great.  Why would a diet of primarily veggie dogs be any better?

Try to get yourself on whole foods as soon as possible.  As I suggested in 3 quick tips for getting started as a vegan, you only really need four good recipes to get things going, and you’ll find yourself feeling a lot better right away.

Next steps

Being vegan doesn’t have to mean counting every calorie.  I rarely track my nutrition on a daily basis, but it’s a useful exercise for everyone to do one or two weeks of each year to see where they’re at.  I always find it funny that people will ask me how I get my protein but they don’t have any idea how many grams they themselves consume on any given day.

One free tool I’ve found handy is the nutrition log on Daily Burn.  They’ve got tons of foods in their database, and it’s one of the easiest interfaces I’ve seen.  As I’ve said, you probably don’t need to do this obsessively, but if you’re just getting started on a brand new diet, something like this can be a huge benefit towards making sure you’ve got your bases covered.

And most importantly, if you’re encountering problems with a vegan diet, ask for advice!  There are millions of vegans in North America alone, and they’re probably not all misguided fools surviving on sheer willpower :)  Leverage any vegans you know along with the internet, including sites like ours, and set yourself up for success by asking for help before and after you run into problems – I don’t want to run into you a year from now and hear another “I tried it but…” story!

{ 12 comments… read them below or add one }

Marcella March 20, 2010 at 2:23 am

You forgot another possible culprit to the tiredness symptom: B12. Even eating loads of nutritional yeast won't always have you meet the daily requirements. Every vegan should supplement with a sublingual B12 daily (unless they are well-versed in obtaining exactly enough B12 from plant sources).

Nimisha March 24, 2010 at 3:23 am

Thank you for your wisdom on this. Been vegan for 13 years, and I still hear it … “I could never do it”…”I tried it but…”

Staying healthy and happily full on a very vegan lifestyle (and I agree with the poster above – take a sublingual B-12 & Vitamin D if you live anywhere north of Florida).

rosy kirby September 14, 2010 at 10:26 am

i have so many questions after becoming a vegan. for the past few months i have’t eaten any meat or animal products of any kind, which was hard because i really loved cheese, but i do it for moral reasons and to me they are more important than my love of cheese. i eat mostly raw vegetables with soy and nuts and seeds. i have a yeast problem so i must not have any gluten or sugar either. while i’ve never been a lover of food, i never ate foods cause they tasted good, i am having some weight problems due to thyroid and yeast problems. i am still over weight despite a vegan diet and only lost 8 lbs!!!! this is very frustrating! i don’t like to cook, so i prefer my veggies raw. help!!!!

Jason September 15, 2010 at 8:56 am

Rose, the best (and easiest) answer is “see a nutritionist” but from the sounds of it, most of your calories may be coming from nuts and seeds (raw vegetables are amazing for you but you need to eat a lot of them,) which might mean you’re on a very high fat diet, depending on what the “soy” part of your diet description consists of.

Like I recommend in the article, try logging your food for a week and figure out your calorie, protein, carbohydrate, and fat intakes to get a baseline of where you’re at, and then you can make some adjustments that you’ll be able to compare against.

Also, weight loss isn’t always automatic on a vegan diet, though it’s a popular motivation for many at first (I see you’re motivated by ethics, which is great and much more sustainable in my opinion.) At the end of the day, it’s no different than a meat diet, and all comes down to calorie counts – new vegans tend to eat fewer calories because the foods are bulkier, which leads to weight loss at least at first, but that might not be the case for you.

If you have any questions, we’re happy to help! You can use the contact form or this comment thread if it fits better here.

Dani March 22, 2011 at 10:46 am

I Have Been on a vegetarian diet, for 3 years. I lost weight, felt great.About 2 months ago i just started feeling weak, I had a hard time doing a20 mile bike ride, which should have given more energy , and the happiness one feels after. I just felt whacked. Any idea, why would be welcomed.

Kelsey May 20, 2011 at 10:00 am

I am a vegetarian and I have attempted veganism quite a few times, but I have been unable to really stick with it, mainly for the fact that I play a lot of school sports and I am extremely active and I too would feel tired. Another factor is that I am on a tight budget and sometimes unsure of what all to buy that will still allow me to get my needed nutrition without breaking me. Any suggestions?

Jason May 20, 2011 at 12:19 pm

Kelsey, a good place to start is by picking up one of Brendan Brazier’s books – he’s a vegan triathlete who started when he was a teenager, ignored his coaches who said it couldn’t be done and figured out a way to get the fuel he needed. Some of the ingredients he uses might get expensive, but if you focus on the core concepts you might find those 3 magic tweaks to your diet that you’re looking for.

Paul June 9, 2011 at 3:55 pm

Hi – thank you for your website. I have been a vegetarian for over 50 years, exercise regularly, am not over- or under-weight, and watch my diet fairly closely. During the last three years however I have been feeling very weak and tired. Nothing has changed in diet, home life, etc. I take a good multivitamin B12, and C. Just weaknessppa:kubuntu-ppa, sometimes extreme. Wonder if anyone has any suggestions regarding diet? Please do not suggest I see an MD, ND, or nutritionist – I cannot afford to do either. And yes, I know this is tough to figure out without blood work and the like, but am still most interested in any suggestions or similar experiences you may have.
Thanks for your help!
Paul

Babs June 10, 2011 at 8:13 pm

Hi Paul,
I am over 50 and I also noticed some weakness and dizziness. It turns out that my blood pressure dropped significantly (which is a good thing for me :D ). I have started to eat more beans for it. (Slow-cooked and yummy)
Have you checked yours lately? They have free machines at lots of drugstores and pharmacies.
Babs

betty January 18, 2012 at 10:52 pm

Don’t know if this thread is still open but I just started vegetarian about a month ago and starting to feel really yucky….meaning fatiqued and tired. No SAD diet for a month, just a few eggs, veggies, salads, nuts occasionally, almond/peanut butter, some green drinks and smoothies. Started adding greek yogurt today because of the fatigue.

The fatique really bothers me. Because I need to lose significant weight, I try to keep calories to about 1500/day. Have to watch the carb/sugar intake due to health issues.

Any input would greatly be appreciated because I dont want to drop out.

Jason January 19, 2012 at 6:37 am

Hi Betty! The site’s in hiatus but here are a few thoughts: I’ve just started working with a personal trainer and as part of that I’ve been doing a new food audit. While I’ve been working hard at getting my protein levels up, it turns out my calories are much lower than I thought, so once you factor out my workouts, my net intake is probably less than you right now! I need to change that for other reasons, but the key is that I haven’t been feeling any fatigue at all, and that’s as a vegan with no eggs or dairy in the mix.

My best recommendation (besides consulting with a health professional) is to pick up the book Thrive by Brendan Brazier and try to take some of his dietary principles into action. And get your blood tested to check your baseline levels for things like iron and B12 – if there’s an existing deficiency you’ll want to adjust accordingly.

betty January 19, 2012 at 9:28 pm

Thanks, Jason. Betty

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