Eating over-the-top amounts of kale and other cruciferous vegetables has been linked to hypothyroidism.
Broccoli Kale Crunch Salad - Our Balanced Bowl
Why you shouldn't eat too much broccoli or kale
What are the side effects of eating too many Brussels sprouts or other cruciferous vegetables like kale and cabbage? - Quora
When healthy foods turn toxic
Health Dangers of Cruciferous Vegetables - Kevin Stock
How to Cook Broccoli, Kale, & Other Brassicas So They Actually Taste Good « Food Hacks :: WonderHowTo
Kale: Discover the 'secret powers' of this superfood
Broccoli and brussels sprouts: The benefits and how to get your kids to eat them - A Better Choice
Is Kale Really a Superfood? - Sow Right Seeds
Broccoli can Help Treat Asthma, Cabbage and Brussel Sprouts can Reverse Lung Damage: Study
Why Does Broccoli Turn Yellow and Is It Safe to Eat? - Delishably
Ultimate Guide to Kale: Healthy Benefits, Recipes, Nutritional Info, and More - Slender Kitchen
Broccoli, Cruciferous Vegetables and Cancer - AICR
Don't throw out those broccoli stems. They can be eaten in a lot of ways.
Cruciferous Vegetables - Should you avoid them while Breastfeeding?