Intermittent Fasting & Hashimoto’s: How to Start Safely

Intermittent Fasting Hashimoto’s: How to Start a Safe Fasting Routine

If you have Hashimoto’s disease, well-timed intermittent fasting may improve inflammation and reduce the severity of this autoimmune condition. Fasting can offer enormous benefits for those with Hashimoto’s. But you shouldn’t just flip a switch and start fasting. It’s best to do some research first. In this article, we’ll explore the scientific evidence behind the intermittent fasting Hashimoto’s connection and look at how to safely start a fasting routine.

What Is Intermittent Fasting?

Intermittent fasting is an umbrella term for any eating pattern that cycles between periods of eating and fasting. The most common fasting schedule is 16:8, where you fast for 16 hours and eat for 8 hours. Some people also practice more extreme fasting routines, such as alternate-day fasting, where you fast every other day. For example, you might eat every day between 11 am and 7 pm, or fast every other day.

Intermittent Fasting and Hashimoto’s Disease

Hashimoto’s is an autoimmune disease in which your body attacks your thyroid gland, causing inflammation and hypothyroidism. Because intermittent fasting reduces inflammation, it is potentially beneficial for people with Hashimoto’s. Intermittent fasting may help improve thyroid function by increasing anti-inflammatory cytokines, such as interleukin-6, and decreasing pro-inflammatory cytokines, such as tumor necrosis factor-alpha (12).

How to Start Intermittent Fasting with Hypothyroidism

If you have hypothyroidism and want to start intermittent fasting, it’s important to start slowly and listen to your body. Here are some tips for starting a fasting routine:

  • Start with a 12-hour fasting window, such as eating between 7 am and 7 pm.
  • Gradually increase your fasting window to 16 hours.
  • Stay hydrated and drink plenty of water.
  • Eat nutrient-dense meals and snacks.
  • Take your thyroid medication at the same time every day.
  • Be mindful of your energy levels and adjust your fasting window accordingly.

Benefits of Intermittent Fasting for Hashimoto’s

Based on scientific evidence, an intermittent fasting routine can do you good if you are diagnosed with hypothyroidism and want to lose weight. If we try any kind of fasting at all, it should be intermittent fasting whereby we eat within an 8-12 hour window, but then abstain from eating for the remaining hours. This type of fasting has been shown to reduce inflammation, boost metabolism, and improve thyroid function in those with hypothyroidism (12).

Fasting Guidelines for Hashimoto’s

Intermittent fasting can be a wonderful tool if you have Hashimoto’s disease or hypothyroidism. Fasting for periods of time lowers inflammation, reduces oxidative stress, and helps balance hormones. Here are some guidelines to follow to ensure that you are fasting safely and effectively:

  • Be mindful of your energy levels and adjust your fasting window accordingly.
  • Listen to your body and don’t push yourself past your limits.
  • Drink plenty of water and stay hydrated.
  • Be consistent with your routine and don’t skip days.
  • Eat nutrient-dense meals and snacks.
  • Take your medication at the same time every day.
  • Don’t over-exercise during fasting periods.
  • Consult with a healthcare professional before starting a fasting routine.


For those with Hashimoto’s disease, intermittent fasting can offer a safe and effective way to manage symptoms and improve overall health. Fasting has been shown to reduce inflammation and improve thyroid function, which can help those with hypothyroidism lose weight. However, it’s important to start slowly
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Would it be beneficial for someone with Hashimoto’s to try intermittent fasting?

Intermittent fasting may have a positive effect on the metabolism of thyroid medications, as well as altering the way the body utilizes energy. For those with Hashimoto’s disease, intermittent fasting done at appropriate times could help reduce inflammation and lessen the severity of the autoimmune disorder.

Is it safe for people with thyroid issues to practice intermittent fasting?

It is not recommended for those with PCOS or thyroid issues to engage in intermittent fasting for more than five days a week, as it can lead to an increase in cortisol levels (stress hormones), which can have a negative impact on hormone levels in the short-term.

Is intermittent fasting safe for people with hypothyroidism?

Intermittent fasting can be beneficial for those with hypothyroidism, but it should be done cautiously. It’s best to start with a mild version, such as 12/12 fasting, and to eat three meals a day. This way, the potential risks of calorie-restricted diets can be avoided.

What makes Hashimoto’s worse?

What is the most effective diet for someone with Hashimoto’s disease to follow in order to lose weight?

Healthy fats: Avocado, olive oil, coconut oil, ghee, sesame oil, nuts, and seeds.

What are some strategies for losing weight with Hashimoto’s?

Support Your Thyroid and Immune System. …
Stay Consistent With Your Habits.

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