Tiza
The medical is fairly simple... I don't have the new one, but it is very similar to the last.
You must not have a blood borne disease such as HIV, Hepatitis or syphilis.
You must have never had TB
These top two are for your visa, there is no room for leeway.
Any pre-existing condition has to be withing normal limits as in if you have high BP..it's under control.
Your eyes can be corrected with contacts if you need them. You aren't allowed to wear glasses.
No serious allergies that require an epi-pen...
Your teeth must have no cavities and your gums must be healthy.
In a nutshell.. You have to be healthy!
I would say go to your doctor and ask him/her if he/she feels you are fit to fly as the last medical required the doctor to sign off on you.
If he says no, ask why and investigate further.
I hope that has been of help...