CYBER WEEK SALE

CYBER WEEK SALE

A sitewide holiday savings event just for you! Use code THANKS25 at checkout for 25% off

Health Benefits of Chlorophyll for Thyroid Health

Learn about the health benefits of chlorophyll and how it may fit into your thyroid wellness plan.
Health Benefits of Chlorophyll for Thyroid Health

Mary Shomon

Patient Advocate

Written by
Medically Reviewed by:
, last updated: 
November 19, 2021
Medically Reviewed by:
Last updated:
November 19, 2021

In this article

When you think about “going green,” it’s not just about the environment…it’s also about what you eat. Chlorophyll – the pigment that gives plants their green color – is considered a powerhouse nutrient thanks to its many health benefits, including your thyroid health. Let’s take a look at chlorophyll, and how it may fit into your thyroid wellness plan.

What is chlorophyll?

If you think back to high school biology, you’ll probably remember the concept of photosynthesis, the process by which plants absorb light and convert it into energy. Nutrient-rich chlorophyll plays a key role in photosynthesizing sunlight into energy to help plants grow. In addition to being essential for plants, there’s also evidence that chlorophyll has health benefits for people.

While every green plant contains some amount of chlorophyll, higher levels of chlorophyll are found in sea vegetables like algae, leafy vegetables, and green plants. Generally, the greener the vegetable, the more chlorophyll it contains.


Which foods and supplements are high in chlorophyll?

Sea vegetables, including edible algae and seaweeds, have the highest concentration of chlorophyll. Chlorella, a form of algae, has more chlorophyll per gram than any other plant. Chlorella is high in protein, as well as a host of vitamins, minerals, and other nutrients.

Other chlorophyll-rich sea vegetables include:

  • Spirulina
  • Kelp
  • Sea moss (also known as Irish moss)

Leafy green vegetables are also high in chlorophyll. These include:

  • Spinach
  • Parsley
  • Bok choy (leafy green parts)
  • Romaine lettuce
  • Arugula
  • Collard greens
  • Watercress
  • Kale
  • Mustard greens
  • Cilantro


Certain grasses are a good source of chlorophyll, including

  • Wheatgrass
  • Barley grass


Green vegetables,
while less rich in chlorophyll than sea vegetables and leafy greens, are a good source of chlorophyll.

  • Asparagus
  • Green peppers
  • Cucumbers
  • Green peas
  • Green beans
  • Brussels sprouts
  • Broccoli


The leafy green tops of root vegetables also provide some chlorophyll.

  • Turnips
  • Beets


Green fruits
are also a source of chlorophyll. They include:

  • Green apples
  • Green grapes
  • Kiwi
  • Avocados
  • Olives


Dietary supplements
that are rich in chlorophyll come in a variety of forms, including:

  • Liquid chlorophyll
  • Chlorophyll water
  • Chlorophyll capsules
  • Chlorophyll powders
  • Wheatgrass and barley grass juices, capsules, and powders
  • Chlorella, spirulina, kelp, and sea moss powders, capsules, and liquid extracts






Do you need chlorophyll?

Nutritional and health experts have long recommended eating chlorophyll-rich foods, citing the benefits of this nutrient. Many health claims are made about chlorophyll, and some are well-supported by research. Nutritional experts and researchers claim that chlorophyll can:


Because chlorophyll is fat-soluble, it is best absorbed by the body in the presence of some dietary fat. In its most natural form, even when accompanied by some healthy fat, chlorophyll can still be somewhat hard to break down.

That’s why a supplement form of chlorophyll canned chlorophyllin has become a popular recommendation among nutritionists. You may see it listed as "sodium copper chlorophyllin" or "chlorophyllin copper complex" as an ingredient on a dietary supplement label. Chlorophyllin is water-soluble, and is an easily absorbed form of chlorophyll.

Is chlorophyll good for your thyroid gland?

Sea vegetables, and supplements derived from them, tend to be high in iodine content which is the building block of thyroid hormone. This means that having adequate iodine is essential for thyroid health. In addition to the many other benefits of chlorophyll, the iodine in sea vegetables can be a healthy way to address an iodine deficiency and support thyroid function.

Are there any downsides to chlorophyll?

Some people have potential side effects and adverse effects when taking concentrated chlorophyll in supplement form. While these supplements are generally quite safe, some patients report digestive problems like nausea, cramps, or diarrhea. (Also, don't be surprised if you notice that your stools are green!)

If you are hypothyroid, there are several concerns and/or potential risks about adding chlorophyll-rich foods or supplements to your wellness regimen.

  • Sea vegetables are very high in iodine, especially chlorella.
    Too much iodine from food and supplement sources can aggravate and worsen hypothyroidism, raise thyroid antibodies, and aggravate autoimmune diseases like Hashimoto’s thyroiditis in some people. If you are sensitive to iodine, already eat an iodine-rich diet, take iodine supplements that include iodine, or you’re hypothyroid after thyroid cancer treatment and following a low-iodine diet, it may be advisable to bypass the sea vegetables in favor of other sources of chlorophyll. As an option, you may want to test your levels of iodine before starting on a chlorophyll-rich diet or dietary supplement. (People with thyroid cancer should always consult their healthcare provider about adding supplements that contain iodine.)
  • Some of the chlorophyll-rich cruciferous vegetables are also goitrogens.
    If consumed raw in larger quantities, goitrogenic cruciferous vegetable consumption may slow down thyroid function. These vegetables include:
  • Spinach
  • Bok choy
  • Collard greens
  • Kale
  • Mustard greens
  • Brussels sprouts
  • Broccoli

You don’t need to avoid these healthy, chlorophyll-rich vegetables. People with hypothyroidism should limit their consumption of these raw. Instead, consider light steaming or cooking, which deactivates most of the goitrogenic properties of these vegetables.

A note from Paloma Health

Are you ready to “go green?” If you are interested in increasing your dietary intake of chlorophyll, especially for your thyroid health, consider scheduling a consult with one of Paloma’s registered nutritionists. As experts in healthy eating for optimal thyroid function, the experienced team of Paloma nutritionists can help you make nutritional choices for optimal thyroid health and recommend a food and supplement regimen.

Share article:

Mary Shomon

Patient Advocate

Mary Shomon is an internationally-recognized writer, award-winning patient advocate, health coach, and activist, and the New York Times bestselling author of 15 books on health and wellness, including the Thyroid Diet Revolution and Living Well With Hypothyroidism. On social media, Mary empowers and informs a community of more than a quarter million patients who have thyroid and hormonal health challenges.

Read more

Is Paloma Right For Me?

Hypothyroidism is a long-term commitment and we’re committed to you. Schedule a free, no-obligation phone consultation with one of our intake specialists to find out more.

Schedule a call
thyroid hormone for hypothyroidism

Find out if Paloma is right for you. Schedule a free call with one of our health care advisors.

Schedule a Call