What happens if you eat too much broccoli?

In this brief guide, we will answer the question, “What happens if you eat too much broccoli?”. We will further talk about the side effects of eating too much broccoli and the recommended intake of broccoli in a day. 

What happens if you eat too much broccoli?

If you eat too much broccoli, you may experience:

  • Hyperthyroidism 
  • Low blood sugar 
  • Hypotension
  • Allergic reaction
  • Stomach problems 

What is the nutritional value of broccoli?

NutrientsAmount in 1 cup broccoli (76 grams)
Carbohydrate 4.78 grams, including 1 g of sugar
Fiber 1.82 g
Calcium 35 mg
Phosphorus50.9 mg
Potassium230 mg
Vitamin C 40.5 mg
Folate 49.4 mcg
Vitamin A 6.08 mcg
Beta-carotene 70.7 mcg
Lutein and zeaxanthin 566 mcg
Vitamin E 0.11 mg
Vitamin K77.5 mcg

What are the side effects of eating too much broccoli?

Broccoli, like any other vegetable, can be harmful to your health if consumed in excess. Though wholesome and nutritious, you still have to monitor your serving size. 

Eating too much broccoli may lead to many unpleasant symptoms, some of which are described below:

May cause upset stomach

Broccoli’s dietary fiber’s aid digestion as well as other activities such as cholesterol control, detoxification, blood sugar control, and weight management.

They help with constipation, as well as other digestive issues such abdominal pain, indigestion, flatulence, bloating, and gas.

However, don’t eat too many broccolis because too much fiber can cause diarrhea, constipation, irritable bowel syndrome, intestinal gas, intestinal bloating, and malabsorption, among other things.

Increase the risk of cancer

Broccoli’s vitamin C, vitamin A content, and other antioxidants protect our cells from damage caused by free radicals and lower the risk of a variety of cancers.

Free radicals are unstabilised ions that take electrons from nearby molecules to stabilize themselves, causing oxidative damage in the process.

Antioxidants only attack free radicals in our bodies at modest levels, but in excess numbers, they may target healthy cells and enhance the risk of cancer.

May decrease blood sugar

Broccoli has a low glycemic index of 15, which means it slows the release of sugar into the bloodstream and helps to manage diabetes. This reduces the chances of a blood sugar increase.

They also include dietary fiber, which slow the absorption of sugar into the bloodstream and help to manage blood sugar levels.

However, eating too many broccolis should be avoided because they might produce dizziness, extreme hunger, profuse sweating, rapid heartbeat, shakiness, irritability, confusion, or mood swings by lowering blood sugar levels unnaturally.

If you’re on diabetic medicine, you should only consume broccoli after checking with your doctor to be sure you’re not at danger of developing a food-drug intolerance.

May Cause Hypotension

High blood pressure, often known as hypertension, is a prevalent condition which affects millions of people all over the world and is a main cause of a variety of heart diseases.

Broccoli’s potassium content calms blood vessels and promotes blood circulation, which helps to lower blood pressure.

Excess potassium, on the other hand, can induce dizziness, fainting, nausea, dehydration, difficulty concentrating, lightheadedness, pale skin, and other symptoms.

To avoid this danger, eat broccoli in moderate amounts. Consult your doctor before incorporating broccolis into your diet if you use blood pressure medication to avoid food-drug intolerance.

May lead to hyperthyroidism


Thiocyanates can also be found in broccoli. This substance is extremely harmful since it causes hyperthyroidism, which results in weight gain, weariness, hair loss, and a bloated face.

When it comes to broccoli, how much is too much?

Sulforaphane, a cruciferous phytonutrient, may be overdosed if 4 cups of broccoli sprouts are consumed each day.

As a result, you must eat different fruits and vegetables, even broccoli, in moderate amounts to reap their benefits while avoiding any negative effects.

What does broccoli taste like?

Broccoli has a slightly bitter taste. Many people regard the taste of broccoli as unpleasant due to its bitter taste. 

Broccoli has a dark green head. Their head is made of small flowers. The stalk of broccoli is green and the appearance of broccoli is like cauliflower.

Can you eat raw broccoli safely?

Yes, you can safely consume raw broccoli. There is no harm in eating raw broccoli if consumed in moderate amounts. However, excessive consumption of raw broccoli can lead to some uncomfortable situations like bloating.


In this brief guide, we have provided an answer to the question, “What happens if you eat too much broccoli?”. We have further talked about the side effects of eating too much broccoli and the recommended intake of broccoli in a day. 



Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.