Depends on the Religion and if the people follow their founder.
If people obeyed the teachings of Christ the sick would be cared for, the hungry fed, no one would return violence for violence, the homeless would have a roof over their head, the wealth would be shared, and everyone would love others as they love themselves and treat others as they want to be treated.
So, Religion has negative influence because people are not obedient to it. At least the Religions that meet the definition of Christian.
EDIT*** Also, Buddhism is another Religion that if it's followers obeyed the founder of the Religion, there would be poverty of Spirit, humility, purity of heart, charity, less anger, no covetousness, no jealousy, no gluttony, and no violence.