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The no-bread life definitely isn’t for everyone.

Jaime Milan, reviewed by Lisa Valente M.S., RD
March 01, 2021
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A few years ago, I was about to get married and wanted to lose some weight. I was eating healthy and exercising, but just wasn't seeing the ~dramatic~ results I wanted. I decided to switch things up and try the ketogenic or "keto" diet for a few weeks (I wrote all about my experience here). I stayed on it for 3 weeks and lost 3.5 pounds, so I did lose over a pound a week. But there are definitely some things I wish I knew before swearing off carbs.

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What You Should Know if You're Thinking About Starting a Keto Diet

You’ll probably feel terrible at first.

After a few days on keto, I developed the "keto flu," which happens when your body's electrolyte levels plummet. On the keto diet, it can be tough to get a good balance of sodium, magnesium and potassium since the latter two come mainly from carb-rich foods such as beans, fruit and potatoes. Keto flu has symptoms like brain fog, drowsiness, headaches and even nausea. For me, it felt like the beginning of a cold when your body feels physically heavy and exhausted. Not fun at all. 

You’ll need to plan.

One thing that's great about the keto diet is that you don't have to count any calories, points or macros—all you need to track is your net carbs (or your total carbs minus fiber). But if you want to avoid the nasty keto flu symptoms and keep your body running like it should, you'll need to include plenty of foods that are high in magnesium (like almonds, spinach, and peanut butter) and high in potassium (like salmon, avocado and leafy greens). It's also important to make sure you're getting enough fiber, which can be difficult to achieve when you're cutting out things like whole grains, potatoes and fruit. Here are some great high-fiber, low-carb foods to include if you're going to try a keto diet.

Most health experts hate it.

Most dietitians agree that keto is one of the worst diets, unless you have a specific health condition (such as epilepsy or diabetes) and your doctor or RD has recommended it. In fact, one gastroenterologist and gut health expert I spoke to believes that keto "decimates the gut," and could be dangerous for your overall health since poor gut health is linked to chronic disease, anxiety, inflammation and more. If you're dead set on going keto, it's important to make sure you're getting plenty of fiber from plant sources such as leafy greens, chia seeds, nuts and berries. According to current nutrition guidelines, women should be eating 25 grams each day, and men should be eating at least 38 grams. Here are some nutritious, keto-friendly recipes to try.

Your cravings will be intense.

During my short stint on the keto diet, my cravings were intense. And they never really stopped. I craved carb-rich foods I love like French fries, fruit and warm bread, but I also craved things that I don't really even like or eat regularly (specifically: old-fashioned cake donuts and Sour Patch Kids). I can't explain this phenomenon, but I blame it on quitting carbs and sugar cold turkey. Plus, restricting foods can make you crave them more. So dreaming of carbs made sense, since I wasn't really eating them on the keto diet. I even tried to make low-carb versions of my favorite foods, but they just weren't the same—zoodles will never be pasta and cauliflower will never be bread (sorry not sorry).

It’s different for everyone.

My partner and I tried keto at the same time, and had two totally different experiences on the diet. He has type 1 diabetes and experienced steadier blood sugar and improved a1c levels (get more info on keto diet and diabetes). He loved the meat- and fat-rich diet, whereas I had to brush my teeth several times a day just to get the perceived taste of fat out of my mouth. I felt bloated and icky, while he felt like he had more energy and lost over 5 pounds in three weeks. 

I also experienced some food-related emotions that I wasn't quite prepared for. I struggled with eating rich and fatty things like cheese, butter, cream cheese and red meat at most meals—in a way, it felt "unnatural" and like it "shouldn't" be part of my weight-loss plan. I had always tried diets that promoted foods like produce, lean meats and whole grains and dialed back on foods like red meat and butter, so it made me step back and evaluate my relationship with these foods. I now know that there's room for all foods in a healthy diet, but it was a little concerning that I'd demonized these foods and hadn't realized it until I was eating them each day. Turns out, I love butter, cheese and steak and they're now in regular rotation in my diet—just in smaller quantities. 

You might have some weird side effects.

Like I mentioned above, I couldn't shake the feeling of my mouth being coated in fat (I know, yuck). Some other folks on keto also complain about a side effect called "keto breath." It's a temporary condition, but could manifest as a metallic taste in your mouth or breath that smells like acetone. It happens when ketones are released from your body, and it's actually a sign you're in ketosis. But perhaps one of the most common side effects (besides keto flu) is tummy troubles. Dramatically decreasing your carb count, not getting enough fiber and/or increasing your intake of fat can result in major constipation, bloating or diarrhea. To keep things flowing smoothly, be sure to drink plenty of water and eat lots of fiber-rich foods. 

You could gain the weight back.

You'll likely lose weight on the keto diet, but the weight can pile back on just as quickly if you start eating carbs again. One reason that low-carb or keto dieters lose weight so fast is because they're shedding lots of water weight (our bodies store every gram of carbs with about 4 grams of water). When you start eating carbs again, those water weight pounds can creep back up. And for most people, it's not realistic to do keto forever since it's so restrictive. But don't fear, we've put together a guide for transitioning from a keto diet to a healthy diet without gaining all of the weight back.