How Hormones Affect Our Health You might think you control your own behaviour. Actually, much of the time, your hormones do. Even the tiniest swing in hormones, can have a dramatic impact on the body and affect your behaviour, metabolism, sleep, mood, immune system, puberty, sexual experience, and how you eat, grow, hate, love, and think. Every cell has markers that direct hormone signals to precisely where they need to go, she says - but hormones rarely work alone, and a dip in the amount of one hormone interferes with other hormones in a domino effect. Image Source : shendeti.com 1. Obesity reduces testosterone If you lose weight, you'll help boost your testosterone levels, the male sex hormone that plays a key role in the development of male reproductive tissues such as the testes and prostate, as well as promoting increased muscle and bone mass, and the growth of body hair. Image Source : sara gottfried 2. Hormones produced by being overweight make you ea...