Affect of sugar on brain (article): effect on qigong?

If you want to read the bad news about what sugar does to your brain, read this piece:

http://www.huffingtonpost.com/2015/04/06/sugar-brain-mental-health_n_6904778.html

It may contribute to Alzheimers, depression, addiction, etc.

The question for this group is: how does sugar affect one’s qigong practice?

Sugar in Chinese medicine affects the earth element, tonifies it.

I believe that doing lots of grounding qigong will reduce one’s need for sugar.

Anyone care to share their experience?

Michael