What Happens to Your Body When You Go Vegan?

Sharing is caring!

This post may contain affiliate links. See our disclosure policy for more.

Nobody warned me about week two. 🫠

Everyone talks about the glowing skin and the energy. Nobody mentions that your digestive system spends a fortnight loudly renegotiating its terms.

Here are the 7 real changes I noticed, in roughly the order they showed up.

🌱 Your Digestion Gets A Major Glow-Up

This is the first thing that changes, and it happens fast.

Most people go from around 15g of fibre a day to well over 30g almost overnight. Your gut notices.

The end result is genuinely better. Getting there is where the comedy happens. Oats and lentils are doing most of this work.

Fair warning: if you go from nothing to beans at every meal, you’ll be uncomfortable for a fortnight. Your gut bacteria are genuinely rebuilding themselves to handle the new food.

Ramp up over a few weeks instead of overnight and you skip most of it. I did not do this. 😅

🏃 Your Energy Levels Start To Climb

This one takes longer, usually a month or so.

The afternoon slump was the first thing I noticed going, mostly because I’d stopped eating heavy lunches without realising it.

The catch is that this only happens if you replace meat with actual food. Swap it for vegan sausages and chips and you will feel exactly the same, possibly worse.

It isn’t magic. It’s just what happens when most of your plate becomes beans and vegetables.

🧴 Your Skin Might Clear Up

Dairy is linked to acne in a fair bit of research, so cutting it out genuinely helps some people.

Mine improved around week six. Whether that was the dairy or the fact I was also eating more vegetables and sleeping better, I honestly cannot tell you.

Plenty of people notice nothing at all here. If your acne was never hormonal, going vegan won’t touch it, and I’d rather say that than sell you a before and after.

👅 Your Taste Buds Reset

This is the change nobody believes until it happens to them.

Your taste receptors genuinely adjust. After a few weeks off heavy salt and fat, vegetables start tasting sweeter because you’re no longer drowning them out.

I now crave roasted carrots. I want to be clear that I find this as ridiculous as you do. 🙃

🌱 You Might Drop A Few Pounds

Often, but not always, and it depends entirely on what you replace things with.

Fibre fills you up and plant food is generally less calorie dense, so most people eat a bit less without trying. No counting involved.

Vegan biscuits are still biscuits, though. The word vegan on a packet is not a nutritional claim, and I learned that the expensive way.

🌱 Your Blood Pressure And Cholesterol Could Improve

This is the best evidenced item on the list by a wide margin.

Less saturated fat, no dietary cholesterol, more fibre and potassium. All four push blood pressure and LDL in the same direction.

Vegans consistently show lower heart disease risk across large studies. It’s the one health claim here I’d defend without hedging.

If you get bloods done, it’s the change most likely to show up on paper.

🌱 Your Body Needs Time To Adjust

Some people feel flat for the first few weeks. That’s usually not detox, which isn’t really a thing, it’s just eating less than you think you are.

Plant food is bulkier and lower in calories. It’s easy to eat the same volume and end up short.

The four to actually watch: B12, which is non-negotiable and has no reliable plant source. Iron, especially if you menstruate. Omega-3s, ideally from algae. And protein, which is easier than everyone claims.

That’s the whole list. Everything else sorts itself out.

✅ Wrapping Up: What Happens To Your Body When You Go Vegan?

Give it three months before you judge any of it. The first fortnight is not representative of anything.

And take the B12 from day one rather than day ninety, which is my one genuine regret.

If you want the practical side, start with easy vegan meals, how to press tofu and the beginner grocery list. Those three cover most of the first month.

Sharing is caring!