Hello,
The symptoms as mentioned in your post can be due to:
1. Any pathology in the vestibular apparatus in
inner ear (it is associated with maintenance of body posture & balance) & Cerebello-pontine angle.
2. Any fluctuation in blood pressure levels such as
Hypotension.
3. Decrease in blood sugar levels (
Hypoglycemia)- can also be attributed to the diet pills you are taking.
4. Deficiency of certain nutrients like Iron, Vitamin B 12, Calcium, etc. which interferes with blood formation & nerve conduction.
5. Long term use of certain medications.
Sensation of loss of balance & black out can be attributed to reduced blood supply to brain during standing up from sitting posture due to peripheral accumulation of blood in lower limbs.
Investigations like
complete blood count, estimation of blood pressure and blood sugar levels will be helpful in clinching the diagnosis.
So, it will be better to consult an
ENT specialist & get a proper physical examination done including vestibular function tests.
Based upon that, appropriate management steps could be taken.
Also, make sure that you do not get up or bends down suddenly.
Take some time, it prevents peripheral accumulation of blood & reduces the chances of symptoms like loss of balance & black out.
Wishing a good health.
Take care.