Can people with blood type O eat dairy product and have good health?

Yes, people with blood type O can typically consume dairy products and maintain good health. While there is a theory known as the "blood type diet," which suggests that individuals with different blood types should follow specific dietary guidelines, there is limited scientific evidence to support these claims.

The ability to digest and tolerate lactose, the sugar found in milk and dairy products, is primarily determined by the presence or absence of the enzyme lactase in the small intestine. Lactase production can decline with age, resulting in lactose intolerance. However, lactose intolerance is not directly linked to blood type. People with blood type O can have varying levels of lactase activity, just like individuals with other blood types.

Some people may experience digestive discomfort or symptoms such as bloating, gas, or diarrhea after consuming dairy products, but this can occur regardless of blood type and is usually related to individual sensitivities or intolerances.

It is recommended that individuals with concerns about their ability to digest dairy products consult a healthcare professional or a registered dietitian for personalized advice. They can help assess individual dietary needs and provide guidance on managing any specific sensitivities or intolerances.