My uncle is having strong dizziness,esp. when he stands up. And he couldn't control his body when he walks, he has fell off several times recently and once was very close to a river. He was having sleep problem last year.

1. This is indeed coming from blood/oxygen to low pressure in the chest and the head.
It is angina + worms related

1) Ginkgo biloba

2). Heart pills natural , Su Xiao Jiu Xin Wan

3). blood pills natural, Fu Fang Dan Shen

4) Ginger

Further, many have heartworms, hookworm, ascaris, check these and kill!

2. I would add that it could be a kidney/adrenal issue (esp. on getting up), an imbalance in the autonomic nervous system, an inner ear issue, or issues in the brain (as with the inflammation that Lyme causes).

3. Also recommend to take 2 tablespoons of virgin (raw) organic coconut oil every day, mix in with food.

4. Also recommend MSM Crystals- Health Revolution episode 12-
https://www.youtube.com/watch?v=BuiZa50iuKs The MSM will help open up the arteries and the capillaries in the blood brain barrier
https://en.wikipedia.org/wiki/Blood%E2%80%93brain_barrier

Also try circulatory stasis (CAFL)
Also do Lymph drain and lymph circulation frequency sets.
Also consider doing manual lymphatic drain method as well
https://www.youtube.com/watch?v=zLB6n_R-dus

5. Check Shy-Drager Syndrome (also known as MSA (Multiple System Atrophy)

For more details, please check the link:
http://www.spooky2.com/forums/viewtopic.php?f=18&t=5866