1. Taste changes: Personal taste preferences may change over time, and a sudden liking for jealousy may be due to recent dietary habits or changes in living environment, leading to an increased acceptance of sour foods.
2. Health awareness enhancement: Vinegar is believed to have various health benefits such as promoting digestion, regulating blood sugar, and lowering cholesterol. People may start increasing their intake of vinegar because they understand these benefits.
3. Psychological or emotional factors: Sometimes, changes in dietary preferences may be related to psychological states or emotions. For example, when experiencing stress, anxiety, or seeking a certain taste stimulus, people may tend to choose foods with strong flavors, such as vinegar.