i find sickeness is a state of mind
i havn't been sick for years but funny enough have been going through a real tough time lately with death in the family, relationship break up, new job all sorts of stuff..........
just got out of hospital now!
been in there for 5 days
unexplained, saw every doctor and specialist,
but if you want to build up your immunity this is what i have been taking for years everyday for breakfast
olive leaf - great for the immune system
5 mushroom extract
magnesium ascorbate - vit c and magnesium (the forgotten mineral extinct from the soil in almost all countries now
a good intestinal flora ( don't go cheap if you can afford it )
vital greens http://www.vitalgreens.com/docs/vital_greens_ingredients.pdf (essential, been taking for years)
hemp seed oil
great combiation works great for me, but find what works for you
my condition, not immune related, but things can hit you hard when you least expect it. am sure fabien will agree