Research has shown that ovulation from the right ovary occurs more frequently than from the left ovary. Furthermore, pregnancies are more likely to be established with oocytes (eggs) from the right ovary, even in women with infertility. This pattern is consistent in both fertile and infertile women.
While the exact reason for this difference remains unclear, studies have demonstrated that the right ovary is more active in ovulation. It's important to note that this does not mean that the left ovary is incapable of supporting pregnancy.
In summary, the right ovary appears to be slightly more favorable for pregnancy due to its higher frequency of ovulation and greater likelihood of producing viable eggs. However, both ovaries are capable of contributing to a successful pregnancy.