Who Should Avoid Eating Olives?
Olive is a nutrient-rich food, yet consumption may pose adverse effects for certain individuals. People who should avoid eating olives include those allergic to olives, individuals with compromised gastrointestinal function, patients with diabetes, people with poor dental health, and pregnant or lactating women. The reasons are detailed below:

1. Individuals allergic to olives: Although olives do not contain rare allergens, some individuals with allergic constitutions may experience allergic reactions—such as skin rashes, diarrhea, or pruritus—after consuming olives. Such individuals should avoid olives altogether to prevent allergic reactions.
2. Individuals with impaired gastrointestinal function: Olives are rich in dietary fiber and gallic acid, both of which can stimulate intestinal motility and potentially cause diarrhea or abdominal pain. Therefore, individuals with weakened gastrointestinal function—including those with spleen-stomach deficiency-cold syndrome or those recovering from gastrointestinal surgery—should avoid olives to prevent exacerbation of digestive discomfort.
3. Patients with diabetes: Diabetic patients must carefully control their intake of sugars and carbohydrates. While fresh olives contain relatively low amounts of sugar, many people find them unpalatable raw and instead opt for pickled olives, which often contain substantial added sugar. Consequently, diabetic patients should avoid pickled olives to prevent elevated blood glucose levels and disease progression.
4. Individuals with poor dental health: The outer layer of olives has a bitter taste that may irritate teeth and gums, potentially worsening existing dental problems. Thus, individuals with dental issues should consume olives cautiously.
5. Pregnant and lactating women: Olives contain amygdalin, a compound that may adversely affect the embryo or infant. Although pregnant women may consume olives in small quantities, excessive intake should be avoided to prevent allergic reactions or gastrointestinal discomfort, thereby safeguarding fetal health. Similarly, lactating women should also exercise caution when consuming olives to ensure infant well-being.
When consuming olives, individuals should base their decision—and determine appropriate portion sizes—on their personal health status and physical condition.