What are the disadvantages of coke?.my husband drinks alot of coke before,does it will effect after?he have knee pain and backache

Coca cola has: a ton of processed sugar and caffeine. The sugar is bad for your husband's waistline which may lead to obesity and could therefore add stress to his knees and back. The caffeine can interfere with sleep and increase his overall stress levels. So coke is unhealthy for him and everyone. There may be other reasons for knee and back pain which should be investigated with your husband's physician.

Many problems: Coke has caffeine and high fructose corn syrup. Drinking more than an occasional soda of this type can cause many problems. The high fructose corn syrup can contribute to obesity. The Caffeine in these sodas can cause elevations of blood pressure and heart rate and cause problems with sleep. Caffeine is dehydrating and can cause joint pain as can obesity. Help him drink more water and less soda.