Is Helicobacter useful for fertility?

Whether Helicobacter pylori is useful for fertility cannot be clearly answered. The scientific evidence is conflicting and generally weak. Some studies suggest a possible negative impact: H. pylori infection can cause chronic gastric inflammation, triggering systemic immune responses that may impair sperm quality or interfere with embryo implantation. Other research finds no significant association. There is no robust evidence that H. pylori enhances fertility. On the contrary, in cases of unexplained infertility, H. pylori infection is more often discussed as a potentially detrimental factor that might be addressed as part of overall health optimization. Consumer stool tests for H. pylori can detect infection, but interpreting results in the context of fertility is speculative. The evidence level is 'mixed'. Safety note: H. pylori eradication should only be undertaken with medical indication, not solely for fertility reasons.