You don't specify what kind of issues you are having (physical health, beginning to cope with aging, emotional issues) so hard to offer help.
But I will tell you that young kids and teens generally notice a lot more about their parents emotional and physical issues than most adults give them credit for-- and not having an accurate grasp of just what and how serious it is can be MUCH more stressful than actually knowing.
One doesn't have to share every detail but acknowledging that you are feeling some stress or sadness does a couple of things. It validates their perceptions, it tells them you have confidence and trust in them to understand that you are subject to ups/downs like all humans. Often when stressed we don't notice our own behaviorial changes-- whether we are withdrawing from things we usually enjoy or being more abrupt with family. It also can reassure them that it is not their fault. When parents are not their usual selves in negative ways kids from preschool to full adulthood can mistakenly assume something they said or did caused it.
If your state/country has a free 'stress hotline' (not a suicide one, these are for talking thru stress before it escalates to that point) you might want to call one to get a better handle on your feelings before talking with any family member.
Whether your issues are common aging ones issues or ones that could happen at any age you can talk to us as well. What helps, works for one person doesn't always work for others but if you get a variety of input you might find something that directly helps, or inspires you to find what will work for you.
