In physical terms, sugar has a great influence: increases energy in our body. But does it influence our behaviour? Is it possible that we act differently because of high amount of consumed sugar?
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You are what you eat right? I guess that would probably apply with how internal physiological responses to food consumption may result in various behaviours.
According to Flora and Polenick (2013), there are some counter-intuitive evidence about sugar and its effects on human behaviour:
Notably, they indicate that sugar can reduce aggression in both children and adults and implied aggressive behaviour:
Sugar can induce addiction based on mesolimbic dopamine... http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2714381/
That is the main effect on behavior...
Also sugar intake will have efects on insulin and vice versa: http://link.springer.com/article/10.1007%2FBF02342828
So answer is yes... it is possible that we act differently, especially after long exposure to that food.
In addition the addiction to sugar can induce impulsive behavior by weaknes of prefrontal lobe... http://books.google.hr/books?id=OwKOpU6rjMsC&pg=PT11&lpg=PT11&dq=sugar+neuroimaging+impulsive+behavior&source=bl&ots=AIXOZz77uE&sig=Fa9iwmlhgoRMQuKqXQirOw7ZzH8&hl=en&sa=X&ei=di9DUq2SJaeg4gT95YCQCQ&ved=0CDwQ6AEwAg#v=onepage&q=sugar%20neuroimaging%20impulsive%20behavior&f=false
and also sugar can cause obesity in long term... http://cdn.intechopen.com/pdfs/40323/InTech-Food_addiction_obesity_and_neuroimaging.pdf
I feel that this question is vague. Obviously sugar-seeking behaviour abates after significant consumption of sugar due to satiation. Therefore, the answer to the question is categorically 'yes'.