Ginger root may cause mild heartburn. Sometimes it can also cause belching or upset stomach.

Mouth irritation may also result from ginger root.

Ginger root increases bile production. So, people suffering from gallstones should stop taking it or take it minimally, as it may worsen gallstones.

Those suffering from inflammatory bowl diseases or ulcers should not take large amounts of ginger root, as it can aggravate their condition.

Ginger root acts as a blood thinner. So, those on anticoagulants should avoid eating large amounts of ginger root.

Those preparing to go for a surgery should also not take ginger root as it can cause certain complications during the surgery.

Sometimes too much use of ginger root can cause dry and scaly rashes. These rashes first develop on the face and then gradually spread downwards.

Prolonged use of ginger can also cause visual sensitivity to bright light.

In rare cases, consumption of ginger can cause eye irritation and pink eye.

Some studies have found that ginger may also affect the blood pressure and heart rhythms.

It is believed that ginger root can lead to mood swings, drowsiness or irregular pulse.

Overconsumption of ginger root can adversely affect the digestive system. It can also cause nausea and diarrhea.

Ingesting too much of ginger root can increase the production of acids in the body leading to acidity.

People who suffer from blood disorders like hemophilia should take medical precaution before taking ginger root. This is because ginger root obstructs the functioning of the platelets.

Ginger root can prove to be toxic to the unborn baby. So, pregnant women should stay away from taking ginger root.

People who suffer from morning sickness should not over consume ginger root.

Ginger root if taken before sleep can make it very difficult to fall asleep again for a long time.