Can fasting boost the immune system?!

Can fasting boost the immune system?

I am trying to boost my immune system and I am thinking about doing a fast for about a week. It would be a combination water and vegetable juice fast. But, I just wanted to know if this is teh best way to boost the immune system.

There are several ways to boost immune sistem :
- In the shower alternate cold with hot cold/hot, cold/hot waters
- Try to reduce sugars (they are bad for immune sistem)
- Eat vegetbles and fruits
- Do some exercise
- Take vitamins like Green Magma plus
- Try Biobran that can boost immune sistem 300%
There are also some teas and supplements to it :
- Biobran (best) 3g per day
- Astragalus
- AHCC
- Reishi + Shiitake
- Shark Cartillage
- And of course Green Tea

Good luck