Do people with the same blood type have any other similarities? As it turns out, they may be more prone to contracting certain diseases. In particular, scientists have established a connection between blood groups and the risk of developing cancer and cardiovascular and some infectious diseases. Blood types have been shown to influence susceptibility to pancreatitis and gastrointestinal disease. Among all blood types, the first (O) has the lowest risk for most diseases.
Keep in mind that if your blood type has a predisposition to a certain disease, it does not mean that you will necessarily get sick. Remember to wash your hands, visit the doctor, and all that stuff to minimize the potential danger.
5.Memory loss
If you ever felt special for having the rarest AB blood type, you might not like the following statement. In 2014, researchers suggested that AB types were 82% more likely to develop some sort of cognitive issues later in life.

4.Infertility
Recent research showed that women with type O might have pregnancy issues due to higher levels of FSH (follicle-stimulating hormone), which result in fewer egg cells being produced. In another study, scientists found that B types had a higher success rate of IVF than those with types O and A.

3.Infectious diseases
The O types are more prone to be affected by Helicobacter pylori, which infects the stomach and duodenum. In addition, such people are more susceptible to diseases caused by cholera, Escherichia coli, and norovirus. However, people with the O blood type recover from malaria faster.

2.Cardiovascular diseases
Meta-analyses confirm that the A, B, and AB types have a higher risk of developing venous thrombosis. This is attributed to the increased Willebrand factor, which is responsible for blood clotting. Having a much lower Willebrand factor, the O types also have a lower risk of stroke, myocardial infarction, and peripheral artery disease.

1.Cancer
Recent studies show that people with the O blood type have a lower risk of developing pancreatic cancer. Other studies have found that the A types increase the risk of developing stomach cancer.
