Is the Keto Diet Safe? How to Avoid Common Issues

Posted: June 21, 2019 at 4:47 am

The ketogenic diet is more popular than ever, but is keto safe? As word spreads about eating a high-fat and low-carb, more and more articles tout the benefits of a keto diet. And rightfully so: ketosis (your bodys fat-burning mode) can help you lose weight, upgrade your brain, soothe inflammation, and more.

That said, a lot of proponents of the keto diet dont talk about the negative side effects of keto or whether the keto diet is safe. There are a few possible safety issues to keep in mind when you follow a ketogenic diet.

In the early, early days, I would do hardcore keto for long periods of time, says Bulletproof founder Dave Asprey. At first, I felt good, but over time I developed problems from that, including leaky gut, food allergies, and my sleep quality went down, but if Im never in ketosis my life absolutely sucks.

This article will cover common problems with keto, how to avoid any dangerous side effects, and when it might be good to modify your keto diet by adding in extra carbs.

Generally, a ketogenic diet is perfectly safe. However, there are a few things to watch for when youre eating keto.

Carbs require water for storage. Fat does not. On a keto diet, you store less water, and your kidneys actively expel sodium instead of holding onto it. That means its easy to get dehydrated eating keto, especially during the first few weeks. With dehydration and low electrolytes, your muscles can start cramping, too.

Do this: Double down on magnesium, sodium, and potassium, your bodys three main electrolytes, and make sure you drink extra water. This is particularly important if you work out while on keto. Staying hydrated will also help you avoid symptoms of the keto flu.

A lot of people report struggling to process carbs when they eat a strict keto diet long-term, which makes sense. If you hardly ever eat carbs, you have no need to keep your insulin pathways running. Its like keeping the lights on during the daytime a waste of energy.

Your body seems to downregulate insulin (the hormone that tells your cells to use carbs for fuel) after youve been strict keto for a while. Some parts of your body thrive on glucose, like the glial cells in your brain that handle repair and immune function. If your cells are great at using fat for fuel and terrible at using carbs, you wont run at full power.

On an episode of the Bulletproof Radio podcast, Mark Sisson, author of The Keto Reset Diet, recommends using keto as a strategy, for a couple of weeks at a time, to reset your metabolism. This, he says, willimprove your metabolic flexibility and your metabolic efficiency.

In doing so, everything good in your life improves. You decrease inflammation. You increase your muscle mass. You increase the amount of energy you have There are a lot of things that happen as a result of this metabolic flexibility and this metabolic efficiency, explains Sisson. (Listen to Sisson talk about metabolic flexibility here.)

Another way to reach maximum metabolic flexibility is with a cyclical ketogenic diet, where you eat carbs one day a week in order to go in and out of ketosis regularly.

Do this: Experiment with carb cycling (aka cyclical keto) by eating 150 grams of quality carbs one day a week.

Download Now: 7-Day Cyclical Keto Diet Meal Plan & Recipe Book for Beginners

If youre eating fewer than 20 grams of carbs a day, it can be hard to get enough fiber. Low fiber intake can contribute to constipation,[1] irritable bowel syndrome (IBS),[2] and an increased risk of colon cancer.[3] Plus,fiber boosts your fat-burning ability and strengthens your gut.

Do this: Be sure most of your carbs on a keto diet come from leafy, colorful, fiber-rich vegetables. (Even then, sometimes its tough to get enough fiber.) This is where a modified keto diet like thecyclical ketogenic diet(aka carb cycling) may be a better option. It gives you the flexibility to eat the types of foods our ancestors thrived on, like tubers, that support a healthy gut.

There isnt research on keto and sleep problems, but some people report waking up in the middle of the night on keto. If you find you have trouble sleeping on keto (and Bulletproof sleep hacks dont help), you may be better off eating some high-quality carbs at night.

These issues are common on strict keto, and are a big part of the reason why the Bulletproof Diet includes some quality carbs.

Do this: Take 1 teaspoon of raw honey before bed.

In addition to the potential problems with keto listed above, there are specific situations where you may do better on a modified keto diet that includes some carbs.

The jury is still out on keto and exercise. Some studies have found that keto-adapted athletes do just as well as high-carb athletes,[4] while other studies find that keto athletes suffer decreased performance.[5]

Do this: If you work out a lot and you find you dont have as much energy to push through tough workouts on a keto diet, consider trying targeted keto. With targeted keto, you selectively eat carbs to boost your workout performance, and end up back in ketosis a few hours later.

If you have an autoimmune condition like hypothyroidism or Hashimotos, you may be better off doing a cyclical ketogenic diet. Cutting carbs too much can decrease thyroid hormone production in some people,[6][7], although other research has found that keto is fine for your thyroid,[8] and the decreased inflammation from keto could actually be good for it.[9] This is another example of individual variation.

Do this: If you have an autoimmune disease, work with your doctor to find out how keto affects you.

Its worth noting that nutrition varies a lot from person to person. Some people do really well on a full keto diet, while others do much better when they eat more carbs. The key is to experiment and see how you feel. Find your ideal carb intake today, and play around until you find a diet that works well for you.

If youve got more questions, read our FAQ guide to keto here.

Thanks for reading!

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Is the Keto Diet Safe? How to Avoid Common Issues

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