There are lots of websites out there with domain names containing words like "healing" and "natural remedy" that suggest that your immune system can be affected by excess sugar. Others also suggest Vitamin C is affected by too much sugar.
Sugar depresses the immune system.
We have known this for decades.
The health dangers which ingesting sugar on an habitual basis creates are certain. Simple sugars have been observed to aggravate asthma, move mood swings, provoke personality changes, muster mental illness, nourish nervous disorders, deliver diabetes, hurry heart disease, grow gallstones, hasten hypertension, and add arthritis.
Is there any scientific truth to these claims?