Someone said :
I think antioxidants and free radicals contribute to premature aging. Antioxidants are supposed to slow it down and are found in non processed fruit vegetables and lean meats. Free radicals are supposed to speed it up. I only discovered this around 2011 but changing the habit of a lifetime is hard. But I do notice when I drink smoothies my forehead looks younger. On the other hand when I drink cola, it looks older. I have had a fizzy drink more or less every day since das got me a moped in 2002. However in recent days I'm increasing my intake of smoothies.
However I met someone years ago who was super young looking 41 yr old who looked 30 and he lived on junk food so I think genetics can override lifestyle too.
I recall my late friend Colm who died in 2013 strongly believed in the link between dermatology and diet. He tried unsuccessfully and to get me eating only unprocessed fruit and vegetables. However recently I've managed to considerably increase the unprocessed stuff but I find it tough going without fizzy drinks most i can manage is two days maybe. I have read they cause wrinkles.
You're doing really well if you manage to go two days without cola. Keep that up and maybe after a few months try three days.