Sometimes there is just that one food or beverage that no matter how appealing it looks, you avoid it at all cost because it makes you sick to your stomach. When a food or beverage causes an adverse effect, usually nausea or vomiting, to the point where you are afraid to have it again at a later time it is known as taste aversion. A reaction to the food or beverage may or may not happen right after ingestion, but can happen up to 6 hours later. For some people, they may be able to get over their aversion after some time, whether it is months or years, but for others they could have that aversion for the rest of their life.
When I was in elementary school, like any other child, I LOVED chocolate milk. I always got it with my lunch no matter what they were serving, and on the rare occasion the only time I did not have chocolate milk was when I felt like having milk and cereal together. But one day my love for chocolate milk disappeared in a heartbeat.
I grabbed my carton of chocolate milk after stepping of the lunch line like I did during lunch every day. I sat down at my table and open the carton; except when I went to drink my chocolate milk this time it tasted nothing like my beloved chocolate milk usually did. With that first sip of milk, I felt my lunch wanting to come back out the way it went it. I thought that the carton of milk just went bad before their time, so I attempted to drink another carton of milk. But it was the same outcome. I felt my lunch wanting to come back up. Realizing that it was futile, I gave up on eating or drinking anything chocolate related. To this day I still have an aversion to chocolate because of this event. I thought I got better at one point as I was able to eat brownies, but the aversion came right back and once again.
Aversions to certain foods or beverages could be an ingrained survival mechanism that has some sort of evolutionary advantage. Especially with allergies, people are not born with a list that says “this is what I am allergic to” rather we have to learn to trial and error. For me I am not allergic to chocolate the way I am allergic to seafood, but the nausea and vomiting someone experiences from taste aversion could be the body’s natural way of saying “this is bad. DON’T eat!”