Let me tell you about a thing called risk factor In health science risk factor is a thing associated with a disease but can't be determined as a cause because it doesn't always cause a disease. Like u can take cancer of the lung . U look at People who smoke and others who don't and went comparing the data u find that the one's who smoke are more likely to get the disease. But it doesn't mean all smokers get the disease And also it doesn't mean all non smokers are safe from the disease