bad food mixture?

is it medical known that the following mix is bad:

banana + lemon + grape + apple + pear



research have warned me against certain mixs but i didn't find anything on above mention.  i felt really tired after the mix and left me sick next day.  

i had not had trouble with the above combo minus banana.  but research said milk plus banana disrupt mental function.

would like some expert opinion here.

[Renee Radenberg]

Eating different fruits usually does not give people issues unless you have issues with fresh fruits as with certain disease states. Bananas may give some people headaches. Thank you for your question.

[kaydea23]

How much of this did you eat? When did you eat it? What else did you eat it with? Do you have issues digesting fruit normally? Do you have issues with garlic, onion, mushrooms?

[seekanswers2012]

the banana the only different factor, everything else wa common.  there was this health article warning against mixing milk with banana if that means anything to you.

[tejraj]

Is the combination really harmful to the body?

I have it a lot of times, never knew this.Can you share the reason why it is harmful?