• Dr. Lena Fernandez

Is Keto Diet Good or Bad For Thyroid Health?

Updated: Mar 24



These days everyone has been raving about the Ketogenic diet, and probably you're giving this diet a try yourself to:

  • Balance hormones.

  • Lose weight.

  • Build muscles.

  • Increase energy.

  • Seizures.

  • Cancer.

I will start by sharing with you the good news first. The good news is that Ketogenic can work to improve your overall health for any above reasons, as long as you know what you're doing. The bad news is that the Ketogenic diet is not for everyone.


The ugly news is that if you are known to have the following health issues and you are on the Ketogenic diet, you must STOP now before you do more damage than good.

  • No gallbladder

  • Active gallbladder issues

  • Kidney stones

  • Kidney failure

  • Heart issues

  • Fatty liver

  • History of pancreatitis (inflammation in pancreas)

  • Poor nutrition status

  • Gastric bypass surgery

  • Leaky gut or dysbiosis

  • Low digestive enzymes

Also, you need to know that a Ketogenic diet isn't about eating cheese, and pork all day. I've witnessed this happening in those following this particular eating pattern, which defeats the purpose. I know there are numerous yo-yo diets out there and if you are anything like me, you are most likely confused, which diet is the right diet for me?


Let me tell you something about the Ketogenic diet that you didn't know, even if you haven't heard of the Ketogenic diet before. Keep in mind a balanced diet in nuts, seeds, oils, wild caught seafood, and dark green leafy vegetables is the best approach to reach your health goals for long-lasting, and if you like to call it a Ketogenic diet then go for it.

I've seen the Ketogenic diet clinically work well for my patients to balance hormones, regulate blood sugar, boost metabolism, promote weight loss, eliminate pain, increase energy and build muscle for a stronger and healthier body. However, the Ketogenic diet is NOT a long-term diet for everyone simply because it’s not as easy to maintain it as you initially might have thought it to be. The proper diet with healthy fats, moderate protein, and low carb intake can take your health to the next level and is easier to maintain in the long run.

What has been really amazing for me is that I have personally maintained my ideal weight of 115 pounds for the last 10 years. I have been incorporating moderate fat, moderate protein, and low carb diet intake without spending hours at the gym or starving my body. However, over seventy-five percent of my fat and protein intake comes from plants the other twenty-five percent comes from animal sources.

If you want to get your thyroid hormones and metabolism a kick start then a similar nutrition meal plan has worked really well for many others under my supervision to balance hormones and maintain their ideal weight effectively.

Did I mention without starving or spending hours at the gym? Even if you haven't thought about the Ketogenic diet just yet, you still want to continue reading below because I am going to share something very special with you right now.

Most people don't quite understand how the Ketogenic diet works, so I am going to explain in layman's terms the science behind it. The main idea of the Ketogenic diet is to encourage the body to burn fat rather than carbohydrate or protein while incorporating healthy fatty foods in every meal you eat. The liver is the master organ in your body that breaks fats into ketone bodies to regulate hormones, suppress appetite, increase energy, promote weight loss, eliminate inflammation, and stimulate muscle growth. Ketones are tiny broken down fats used as fuel in your body, which seem to be the key to optimal health.

The most common question I've been asked is how does the Ketogenic diet work for hormones, weight loss, and insulin resistance, or diabetes? Healthy fats in a Ketogenic diet have a great impact on the activity of thyroid hormones, growth hormones, and insulin.


Specifically, thyroid hormones function better with stable weight on a ketogenic diet particularly because the body becomes more responsive to these hormones due to healthy changes in cell structure and function under nutritional ketosis. In return, it takes fewer hormones and energy to convert thyroid hormone (T4) production in the thyroid gland and its conversion to T3 in the liver.


Low carbohydrates in a ketogenic diet diminishes insulin signaling. Instead of burning sugar, your body begins to burn fat, hence weight loss, leaner muscle mass, and less inflammation. I have also witnessed leptin resistance improve during nutritional ketosis because the brain is more sensitive to the satiety hormone, leptin, hence less hunger. Stay tuned to learn more about leptin resistance and weight gain.


When your low fuel warning light comes on in your car, are you more likely to speed up or slow down to preserve the reserve fuel in your tank? I would think you would slow down and it's really that simple.

Somehow, the general population doesn’t quite understand that a healthy Ketogenic diet does not include eating large and regular amounts of fat and protein from animal sources. Both pose risk of heart disease due to an increase of inflammatory markers called homocysteine and high sensitivity C-reactive protein (hs-CRP).

To understand exactly what a healthy Ketogenic diet should look like, click video below or GO HERE to learn how to make a delicious and simple Ketogenic smoothie to get your health a kick start.



So, if you want to burn off the extra weight and diminish pain, then you must look into the proper Ketogenic diet for lasting results.


Comment #replay when you watch my video so I can hop in there to answer your questions and give you a big shout out.

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