Reliance International's Research Report on the Development Opportunities of Big Health Industry in the Next Ten Years points out that many existing commercial health insurances are only used as additional risks of life insurance. If insurance is regarded as an investment method, for example, many life insurance products have the functions of guarantee, saving and investment, then other investment products can partially replace life insurance products, such as bank deposit accounts, and stocks, bonds, foreign exchange and futures can partially replace life insurance products (such as investment-linked insurance).
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.