The short answer is yes. It can raise it.
Anxiety can lead to insulin resistance, thereby increasing insulin levels./www.ncbi.nlm.nih.gov/pubmed/23444388/en.wikipedia.org/wiki/Insulin_resistance
Increased insulin can simulate cancer cell growth.
(See below for background material extracted from an earlier post.)
<< Trying to control blood glucose is not going to make an impact on cancer
progression. The liver and pancreas are going to maintain glucose levels.
The keys that unlock the door for glucose entry to all cells lies in "insulin" and
"insulin growth factor" receptors. Cancer cells have many more insulin receptors
(and IGFs) than benign cells, in general, and PCa cells have many times as
many insulin receptors than normal prostate cells.
Consumption of "fast" carbs (high glycemic Index foods) will cause an insulin
response, with cancer cells getting more than their share. A lot of fast carbs,
especially on an empty stomach, will cause an insulin spike. Normal cells
will be saturated , and the "surplus" insulin and insulin growth factor will go to
It is the insulin "spikes" that do the most damage. That is why "juicing" fruit
does not work. That is why starting the day with OJ and/or coffee with sugar does
not work. This is why exercise does work. Exercise increases insulin sensitivity,
so the body needs less insulin in responding to food.
It's actually much more complex than above, e.g. insulin and IGFs are important
for health, but "spikes" go to cancer and they impact proliferation, cell division
(mitosis), and cell death (apoptosis) . . . all in a negative way. >>