No you can not.
Currently having chicken pox (herpes virus) would prevent you from donating plasma (since you would be 'unwell'). Having had chicken pox in the past will not prevent you donating plasma or blood. Currently having shingles ( a reactiviation of the chicken pox virus) would prevent you from donating plasma/blood (again, you would be considered 'unwell'). However having a cold-sore (again, herpes virus), or minor herpes on a small patch of skin should not prevent you from being able to donate plasma/blood.
You won't get HIV through donating blood.
Technology in Fluidics.
Herpes is spread by skin-to-skin contact, not by blood. You can't get herpes from a blood transfusion.
Yes, women with polycystic ovarian syndrome are not barred from donating blood.
is it bad donating blood a day before surgery?
Many people feel that blood should be donated for free. Paying money encourages people who should not be donating (drug users) to give blood to finance their habits and people who need money to donate too often and damage their health.
Specefically, no. However, donating plasma is essentially donating blood. A loss of blood can caus fatigue, tiredness, and also leg cramps.
no
you should wait for 48 hours after donating blood before you go flying
yes, by donating blood, uric acid level can be reduced at minimal extend .........
Donating blood does not make you fat, no.