MSG is bad, and there's tons of side effects that most people are aware about. It also contains a lot of salt (sodium), thus increasing the chances of hypertension and is definitely linked to baldness.

The wax from the noodles is bad. We did a surgery on a student who ate instant noodles almost everyday, all 3 meals for more than 3 months. Came in with abdominal complications. Did a laparotomy and the whole intestine was lined by WAX. You wont believe it, the wax has been interfering with the absorption of nutrient and the guy is extremely malnourished and didnt even realise it.

Normally after eating instant noodles, it takes a few days for the wax to clear. But if you keep eating it, then it'll accumulate and line the intestine. So... try cutting down... hopefully you'll get over your craze for instand noodles!