[knittnmom]

Haven’t been able to independently corroborate this yet, but my daughter’s doctor told her that sugar suppresses the immune system for 72 hours.

[Constitutionalist Conservative]

my daughter’s doctor told her that sugar suppresses the immune system for 72 hours

Sugar causes AIDS!

J/K, but I'd like to know what the doctor meant by that, since if it's true, nobody in the US would have a functional immune system.

[ravingnutter]

72 hours seems a little excessive, I did a search and found this:

Excess sugar depresses immunity. Studies have shown that downing 75 to 100 grams of a sugar solution (about 20 teaspoons of sugar, or the amount that is contained in two average 12-ounce sodas) can suppress the body's immune responses. Simple sugars, including glucose, table sugar, fructose, and honey caused a fifty- percent drop in the ability of white blood cells to engulf bacteria. In contrast, ingesting a complex carbohydrate solution (starch) did not lower the ability of these white blood cells to engulf bacteria. The immune suppression was most noticeable two hours post-ingestion, but the effect was still evident five hours after ingestion.

Source

Another article that agrees with five hours