The Katori Titanium Cutting Board is known for its durability and unique properties, but potential side effects should be considered. Users have reported initial reactions when switching from traditional boards, which can include a metallic taste in food. This is often attributed to the titanium material interacting with certain ingredients during food preparation.

Additionally, while the board is designed to be non-porous and hygienic, some users have expressed concerns regarding scratches that may harbor bacteria over time. Regular maintenance and proper cleaning techniques are crucial in minimizing these risks. It's advisable to follow the manufacturer's guidelines for care to ensure longevity and safety of the cutting board.

Lastly, it’s important to be aware that while Katori Titanium Cutting Boards are generally safe, individuals with specific allergies, particularly to metals, should consult with a healthcare professional before use. Overall, the benefits often outweigh the side effects, making it a worthwhile investment for serious cooks.