Is it a sign of immune system problem?

[kenny1999]

I had been coughing for three weeks, but I had no fever and no other symptom so I tried not to see a doctor or take a medicine, I avoided cold drink and fried food, I drank mostly warm or hot water, took some vitamin supplements and ate only good foods, but I wasn't able to stop the cough or relieve at all, until I took a medicine last night, bought in a nearby grocery store. I wouldn't say I have recovered totally but A LOT better, for the first time, over the last three weeks. Is it normal or does it imply that my immune system is weaker than other normal and healthy adults'? Does it also imply that vitamin supplements or good foods don't actually help one's health? As I said, I did not have fever or any other symptoms so I believed that it was not a serious illness

Edited October 29, 2023 by kenny1999

[exchemist]

3 hours ago, kenny1999 said:

I had been coughing for three weeks, but I had no fever and no other symptom so I tried not to see a doctor or take a medicine, I avoided cold drink and fried food, I drank mostly warm or hot water, took some vitamin supplements and ate only good foods, but I wasn't able to stop the cough or relieve at all, until I took a medicine last night, bought in a nearby grocery store. I wouldn't say I have recovered totally but A LOT better, for the first time, over the last three weeks. Is it normal or does it imply that my immune system is weaker than other normal and healthy adults'? Does it also imply that vitamin supplements or good foods don't actually help one's health? As I said, I did not have fever or any other symptoms so I believed that it was not a serious illness

It’s normal and most vitamin supplements are a waste of money. However vitamin D in winter,  if you live in cloudy northern latitudes, may help the immune system, as you may not get enough sunlight to synthesise enough on your own.

[kenny1999]

On 10/29/2023 at 2:50 PM, exchemist said:

It’s normal and most vitamin supplements are a waste of money. However vitamin D in winter,  if you live in cloudy northern latitudes, may help the immune system, as you may not get enough sunlight to synthesise enough on your own.

How about fish oil tablets? Is it also a waste of money?