RDW

I'm 20 years post op and am chronically anemic and deficient in many vitamins and minerals. When my levels get low I feel awful in a few ways. You need to see your PCP for blood work to check your status and see what you need!

Taking vitamins for life is required for bypass patients (as well as many sleeve patients - although the consequences are worse for bypass patients if they slack off on taking vitamins). And yes, the fact you don't feel well could very well be due to vitamin deficiency.

You need to see a doctor. Get examined and get your labs done and see if there are any issues. If they don't find anything lacking keep pushing until your issues are resolved. Not feeling well could be a symptom of practically anything.
Honestly, medical issues I have now are not caused by my surgery 20 years ago, but the surgery does complicate things a bit. About 6 years post-op feeling generally not well turned out to be a heart issue, discovered when I woke up on the floor in my boss's office.
You've been feeling this way for a while. I don't know why we wait to do some things. We need to prioritize ourselves. We've done it before when we had surgery. Paying attention to things and taking action can keep small problems from becoming big ones. Take action now.
Having said the above, vitamins certainly won't kill you. Malaise can be caused by anemia which can be an iron issue. Also B12 is a common deficit for us and also might cause similar feelings. But they are not instead of seeing a doctor, but in addition to seeing a doctor.
It's time for annual check ups.
Good luck,
Tek

This absolutely can contribute; I feel rough if I deviate from my supplements for a few DAYS, so after a year I'm sure you probably don't feel your best.

It is my understanding that vitamins are for life. It could be a factor as to why you're not feeling so well. Check in with your doctor asap. I hope you're feeling better soon.

I haven't taken any Vitamins in over a year now and I haven't been feeling well at all could this be the reason ? I had surgery well over 15 yrs. ago and din't think I needed them any more .