STOP drinking cold drinks for one thing.
The Chinese (I go to an acupuncture specialist when I need) DO NOT drink cold drinks. They drink Hot Water and Hot Green Tea - always HOT or at least warm. Never cold.

1.4 billion people in China must know something.

It shocks your internal organs, probably causing them to malfunction. Especially iced drinks. Causes FAT retention, too.

Americans are brainwashed into drinking ice cold drinks all the time.

Go off them for awhile, drink warm or room temp water/teas (I don't drink sweets either) and then take one drink of an iced drink AND YOU WILL FEEL THE SHOCK TO YOUR SYSTEM.

When people have hypothermia, the body shuts down circulation to extremities to keep the core organs warm as long as possible to survive. That should be telling us our CORE should never be chilled, let alone get ICED.