What Causes Nausea or Vomiting? Nausea and vomiting are not diseases, but they are symptoms of many conditions such as: Motion sickness or seasickness; Early stages of pregnancy (nausea occurs in approximately 50%-90% of all pregnancies; vomiting in 25%-55%) Medication-induced vomiting; Intense pain; Emotional stress (such as fear) Gallbladder disease
Souring definition, having an acid taste, resembling that of vinegar, lemon juice, etc.; tart. See more.
Sourness is caused by the taste of acids, such as vinegar in alcoholic beverages. Sour foods include citrus, specifically lemons, limes, and to a lesser degree oranges. Sour is evolutionarily significant as it is a sign for a food that may have gone rancid due to bacteria.