The key arguments against drinking diet soft drinks are:
- They are worse for you than normal soft drink
They cause cancer
Many soft drinks add benzoate as a anti-microbial agent and ascorbic acid (vitamin C) to their products. Under certain conditions of storage and handling of the soft drinks, the benzoate and ascorbic acid can form benzene. Benzene is a carcinogen. The levels of benzene detected in most of the soft drinks tested was below five parts per billion, which is considered safe for humans.
http://nutrition.about.com/od/askyournu ... enzene.htm
http://www.webmd.com/diet/news/20050613 ... ore-weight
Caffeine in soft drinks can also help boost your metabolism.
Of course though, green tea with caffeine would be healthier:
http://www.dailycamera.com/news/2006/de ... -workouts/
The main reason why I've quit drinking Pepsi max and other caffeinated diet drinks is because the caffeine made me tired later on in the day and I had trouble sleeping. But now that I'm back to dieting, it is my beverage of choice after water.
Hope this was interesting for some of you. I'm not saying diet drinks are awesome for losing weight or anything, but could possibly be a small help.