How can you effectively manage risk in your retirement investment portfolio?

To effectively manage risk in your retirement investment portfolio, you can diversify your investments across different asset classes, regularly review and adjust your portfolio based on your risk tolerance and investment goals, and consider investing in low-cost index funds or exchange-traded funds (ETFs) to reduce fees and increase potential returns. Additionally, staying informed about market trends and seeking advice from financial professionals can help you make informed decisions to protect and grow your retirement savings.