Research on the effects of intermittent fasting for psoriasis is limited. Some dietary changes, like a low calorie plan, may help with symptoms, but discussing options with a healthcare professional is highly advised.

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Intermittent fasting involves focusing more on when you eat than what you eat. In general, it’s about alternating between eating and not eating for a set period of time throughout the day. For example, you may eat from 8 a.m. to 4 p.m. and fast the rest of the day and night.

Intermittent fasting has gained popularity as a means to lose weight and improve metabolism. However, there’s little evidence that fasting benefits people with psoriasis, and the practice could do more harm than good in some cases.

Research indicates some dietary changes may improve psoriasis symptoms, but there’s limited evidence.

If you’re curious about intermittent fasting, consider discussing the advantages and disadvantages with a medical professional. In the meantime, here’s a deeper look at the potential benefits and risks of intermittent fasting for people with psoriasis.

Research on intermittent fasting and psoriasis is limited. There are only a few small, observational, and animal-based studies on the topic.

One 2019 observational study evaluated 108 people with moderate to severe plaque psoriasis. They fasted during the month of Ramadan. After the fast, participants reported a significant decrease in Psoriasis Area and Severity Index (PASI) scores.

Another 2019 study on the effects of fasting among 37 people with psoriatic arthritis showed that short-term fasting improved disease activity scores. However, in a 2019 review examining the effects of Ramadan fasting and other types of fasting on skin health, researchers concluded there was insufficient evidence to draw those conclusions.

A 2018 review on nutritional strategies for psoriasis indicated that weight loss and healthy lifestyle habits significantly reduced PASI scores among people with moderate to severe psoriasis.

Low calorie dietary plans and intermittent fasting have also helped reduce the severity of psoriasis and other conditions among people with obesity.

More research is needed to determine whether intermittent fasting can improve psoriasis symptoms. However, research suggests that if necessary, leading a health-promoting lifestyle and trying a low calorie diet may help.

Learn more about anti-inflammatory foods for psoriasis.

Little evidence exists that indicates intermittent fasting can improve psoriasis symptoms. In addition, regularly fasting may lead to some harmful habits and side effects.

Some of the potential side effects of fasting include:

  • eating disorders and disordered eating, especially binge eating on nonfasting days
  • dizziness, confusion, and lightheadedness when combining exercise with fasting
  • severe hypoglycemia (low blood sugar) and other serious health challenges for people taking diabetes medications
  • obesity linked to skipping breakfast
  • reduced energy levels

Research on dietary recommendations for people with psoriasis and psoriatic arthritis recommends a low calorie diet for people with overweight or obesity. Researchers have found limited evidence that certain foods and diets can reduce symptoms in some people. They also stress the importance of continued medical treatment rather than only relying on dietary changes.

Intermittent fasting may be the latest trending diet for weight loss. However, there isn’t enough scientific evidence to prove its effectiveness for overall health, specifically psoriasis.

Intermittent fasting may pose a health risk to people with certain conditions, including:

  • diabetes
  • people who are pregnant or nursing
  • people with a history of eating disorders or disordered eating

More research is necessary to bolster or dispel the effects of fasting on psoriasis symptoms.

Most studies on the health benefits of intermittent fasting are animal-based. Only a few small-scale studies point to potential improvements in psoriasis symptoms. These studies mainly involved low calorie or short-term fasting diets.

Consider talking with a doctor or nutritionist to learn more about how changes to your diet could help manage your psoriasis symptoms.