Sugar – it is heating, sticky and toxic to the body in big doses
Lack of sleep – your body needs adequate rest to rejuvenate all organs so they can perform their intended roles
Over-eating – this can send your body into shutdown mode and put excess stress on your organs
Alcohol – both poisonous and toxic to the body, too much alcohol damages the body internally which is evident externally
Cold food and drinks – can create stagnation in the digestive system, slowing down the digestive process considerably
Emotions
– anger/upset/frustration – all will affect one or more of your organs.
Try and control what you can and let go of what you can’t
Processed foods – they contain foreign properties that are literally indigestible by the human body
Pandadol/nuerofen – contain chemicals that will alleviate pains and
complaints temporarily, yet will leave a trail of destruction. Try
natural remedies instead
Anti-biotics – whilst they kill bacteria and bugs – they also kill
your insides! Follow up a round of anti-biotics with some gut nourishing
foods
Over-exercise – will deplete your Qi and deplete your digestive
strength. Exercise is fantastic in decent doses – not extremes. Are
there issues in your life that you are avoiding and using exercise as a
distraction from?
I only listed 10 examples for you because you didn't put any more detail on a specific number or answer.