(Current Affairs For SSC Exams) Sci & Tech, Jan. 2013 - How do citrus fruits
Science & Technology
January 2013
Topic : How do citrus fruits like lemon/orange reduce vomiting sensation when smelled?
Usually the vomiting sensation is associated with nausea. The list of causes of nausea and vomiting is endless. Some odor can make one person vomit while it might not affect another person at all. Drugs for the treatment of certain diseases, such as cancer, can cause nausea and vomiting.
People with migraines always experience this. Common infections or
equilibrium disturbance, such as motion sickness can also be a cause. Pregnancy
often brings on periods of nausea.
It is otherwise called as “morning sickness.” Nausea and vomiting may also be
psychological in origin. Some people vomit under such conditions of emotional
stress as family arguments, academic tests, airplane travel, and some
high-stress situations. In addition, some eating disorders are characterized by
self-induced vomiting.
There are some simple treatments to reduce any discomfort due to nausea and vomiting. One such treatment is, smelling the citrus fruits (lemon). Limonene, an essential oil present in lemon has a refreshing smell, which prevents the onset of nausea.
This essential oil is produced in specialized glands found more in the rind of these fruits. It has been found that this essential oil has certain physiological effects.
These include brain stimulation, anxiety-relieving sedation and antidepressant properties as well as increasing cerebral blood flow.
So it is better to put some lemon essential oil into a handkerchief and keep
it in our pocket or hand bag. When we feel a bout of nausea coming on, we should
wipe our nose to breathe the essential oil.
It is also better to consume little amount of lemon juice. Though lime is acidic
in nature, it has an alkalizing effect in our body. It is this nature of lemon
which makes it stomach friendly and prevents nausea, heart burns, indigestion
and vomiting.
Citronella, the essential oil present in the lemon grass imparting the characteristic refreshing aroma, can also prevent nausea and vomiting. Lemon grass tea is an excellent drink and helps to cleanse the bowel and flush out toxins in the system.
Thus the lemons serve as super inexpensive agents for natural calming effect that can reduce nausea, and can leave us feeling clean and refreshed.