Can you tell me if there are maybe some vitamins or supplements i can take?

Almost 40: I'm told by a surgeon friend from bejing china that everyone there is started on vitamin d once they hit 40. It depends on what your diet is like. There are blood tests to check minerals like magnesium, calcium and the major vitamins ( d, B12 , folate, b6, thiamine etc) dietary needs might change with illness or use of other medications. I don't guess at this. Nutrition is very important.