The expression... have some faith, and it will work out could be used by people to encourage and comfort someone facing serious health problems or specially stressful situations.
An overwhelming majority of scientific studies highlight the positive health benefits of faith, including protection from, and coping with illness, as well as a faster recovery time. https://youtu.be/cye8eT_eoqU
Over 1,200 studies and 400 reviews say: "The overwhelming majority of scientific studies highlight the positive health benefits of faith, including protection from illness, coping with illness, and faster recovery from it. https://youtu.be/NPUNsN-0Lz4
Health benefits include an increased sense of well-being, hope and optimism; lower rates of depression and suicide; less loneliness and less alcohol and drug abuse. https://youtu.be/AoWImuC1-ss
For anything other than religion and spirituality, governments and health providers would be doing their utmost to promote it.
Regular churchgoers had a life expectancy up to 14 years longer than those who did not attend services.
Faith or Fe in Spanish is trust, assurance, and confidence in The Almighty. Living faith is shown by service and obedience to God. Our Lord will increase our faith if we fervently ask and draw close to Him.