approaches to? why use to but not for

To approach (verb) means to come nearer in position, time, quality, character, etc., to someone or something. The noun derived from the verb is also followed by 'to'.

Thanks.
An emotional roller coaster?

I am not sure what you mean by this.

Contrex stealing another person's words and ideas.

Quote:

http://able2know.org/topic/217676-1

Post # 5,380,743

@contrex,
http://www.mayoclinic.com/health/food-allergy/AN01109

What's the difference between a food intolerance and food allergy?

Answer
from James T C Li, M.D., Ph.D. : A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two.

Contrex: A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two.

James T C Li, M.D., Ph.D.: A true food allergy causes an immune system reaction that affects numerous organs in the body. It can cause a range of symptoms. In some cases, an allergic food reaction can be severe or life-threatening. In contrast, food intolerance symptoms are generally less serious and are limited to digestive problems.

Contrex: A true food allergy causes an immune system reaction that affects numerous organs in the body. It can cause a range of symptoms. In some cases, an allergic food reaction can be severe or life-threatening. In contrast, food intolerance symptoms are generally less serious and are limited to digestive problems.