6 Healthy Foods That Can Be Unhealthy When You Overeat Them

4. Rice

Although rice is delicious, it actually contains very few vitamins. If you eat too much rice, you deprive yourself of all the other vitamins. It also makes your insulin levels spike. Most importantly, it might cause poorer mental performance due to low-level arsenic exposure.
The norm is usually around 90 grams of uncooked rice.

5. Broccoli

Broccoli contains thiocyanates which lead to the excessive production of thyroid hormones. As a result, you might experience hair loss, a bloated face, and other ramifications. Broccoli can also cause a stuffy nose and provoke other allergies, like skin rashes or itching.
It’s better to avoid consuming more than 4 cups a day.

6. Blueberries

Blueberries can lower blood glucose below normal which is dangerous for diabetics. The berries also thin blood, so be careful, especially if you take any pills, blueberries can interfere with your medication. You might notice a shortness of breath or irregular breathing as well since blueberries are high in vitamin K.
1 cup of blueberries is a healthy amount.