can depression make you sick

Hi can depression make you feel sick and throw up and feel weak and have no engey or no feel like eating

Yes, it can. So can a lot of other things. I haven't heard or experienced nausea due to depression, so I can't say anything about that.

A thorough physical might be in order?

Yes, depression can certainly make you feel sick and not want to eat and have no energy. Anxiety is closely related to depression and any really intense emotion can make you feel or be sick.

If it is linked, it will be less severe on a better day.

If those symptoms don't improve in a few days, it would be a good idea to see a doctor and make sure there isn't a medical cause.

The gut and brain are intimately linked and each can strongly affect the other. But I don't see how a depressed mood is going to make one acutely ill in that way.

Absolutely yes it can but as Qwerty said it might be a good idea to have a physical to rule out another cause also.

My current bout of depression has included some anxiety and nausea and a long period of lack of appetite that has caused me to lose a lot of weight.

Hi detour1, Absolutely, bouts of depression and/or anxiety can cause you to be nauseous. Many \, many times panic attacks and anxiety have caused me to have sever bouts of nausea and lack of appetite. Contrarily, it can also make you binge eat. I have suffered this also from time to time but mainly loss of appetite and vomiting. I have also had severe panic attacks years ago which resulted in hyperventilating and asthma like symptoms.

I hope you get some medical assistance to determine if this is indeed what is wrong and to rule out other medical causes.