Yeah, that does seem to be a little broad. Should narrow it down to specific hormones. The link below is the superpower wiki listing for hormone manipulation, to give you some ideas. My suggestion though is:

Oxytocin - Trust Inducement, Orgasm Inducement, Meiosis Manipulation, Circadian Rhythm Manipulation.

Gives you a wide, useful effect for both male and female, while limiting you at the same time.

http://powerlisting.wikia.com/wiki/Hormone_Manipulation