Thanks so much for kind words and advice,
@Lamont D,
@MartinK9,
@Contralto @Mbaker and all of the others that gave such considered and helpful advice.
Another update after a night of research. I googled the numbers reported in the doctor's note from the hospital to my GP and found out that the information given to me by the hospital doctor wasn't quite correct and there is a problem after all. In fact, my blood is acidic and there is a bicarbonate deficiency. However, oxygen saturation of the blood, oxygen particle pressure and carbondioxide particle pressure were normal.
I sincerely hope that none of these results was a huge problem -- as the hospital released me to go home after looking at the results.
Reasons for the low bicarbonate levels (which impact blood acidity) might be a problem with the kidneys -- so I'll schedule a kidney test. The hospital doctor also recommended that a kidney test should be scheduled in the next couple of weeks.
Another reason, however, might be a ketogenic diet and/or starvation diet. This is, at least to some extent, applicable in my case.
Trying to lower my average and fasting blood sugar levels, I've done about an hour high intensity exercise on the elliptical trainer almost every single day for the last month burning about 800 cals per day. Plus, I've not eaten very much during this time, especially not enough protein. In addition, I've also had a problem drinking enough ever since my blood sugar levels normalized.
So, I'm thinking it might be good idea to modify my diet a bit and substitute some of the fat with some more protein, and cut back on the exercise a bit. An additional benefit of more protein might also be that it will up insulin production, which in turn will inhibit ketone production. A third tweak, I am considering is to supplement with a bit of baking soda to up my bicarbonate levels as bicarbonate will neutralize some of the acidity. Also, I will up my water intake.
I will also buy some ketostix to see if these changes will have an impact. Wish me luck, my friends.