Health and Nutrition
Kale: Health Benefits and Hidden Risks You Should Know
Learn how kale supports bone health and immunity- and why it may cause issues for people with thyroid conditions, sensitive digestion, or mineral absorption concerns.
- Shira Dabush (Cohen)
- פורסם ו' תשרי התשפ"ה

#VALUE!
Kale is a natural and excellent source of calcium, an essential mineral for healthy bones, muscle function, and nerve signaling. It’s also packed with vitamins K, C, and A, which support skin health, immunity, and proper blood clotting.
One cup of kale brings with it a wide range of health benefits, but there are also a few potential downsides worth keeping in mind.
Individuals with the following medical conditions should avoid kale:
Thyroid Issues
Kale contains goitrogens, compounds that can interfere with thyroid function when consumed regularly in large amounts. These compounds may block the body’s ability to absorb iodine, which is critical for a healthy thyroid.
Digestive Problems
Because kale is high in dietary fiber, it can sometimes cause bloating, gas, or constipation- especially for those who generally don't consume a lot of fiber.
Low Levels of Minerals
Kale contains oxalates, which can bind to minerals such as calcium and magnesium and prevent their absorption in the body. This can be problematic for people already deficient in these nutrients.
Sensitivities or Allergies
Some individuals may experience sensitivity or even allergic reactions to kale, including skin irritation, digestive discomfort, or respiratory symptoms.
While kale is undeniably a nutrient-rich superfood, it's important to consider how it affects your body, especially if you have underlying health conditions. As always, moderation is key.