Meet America's tallest man and its tiniest siblings. He's 7'8". They're 2'2" and 3'2". Dr. Oz explores the unique science of life on a small to grand scale. Here, Igor Vovkovinskiy, who was born with pituitary gigantism, talks about the everyday challenges of his condition.

Click here to watch Part 2 and see Igor officially break the Guinness World Record for America's tallest man, and meet Brad and Bridget, a brother and sister both affected by a rare form of dwarfism called primordial dwarfism.

Click here to watch Part 3 to learn more about Brad and Bridget, how primordial dwarfism affects their bodies, and what they're doing to beat the odds.


Your Parent Has Dementia: What to Talk to Their Doctor About

Make sure all their doctors are aware of all the medications she is taking.

Q: My mom is 94 and has dementia. She is taking a whole medicine cabinet-full of medications and I think they actually make her fuzzier. How should I talk to her various doctors about what she is taking and if she can get off some of the meds? — Gary R., Denver, Colorado

A: Many dementia patients are taking what docs call a "polypharmacy" — three or more medications that affect their central nervous system. And we really don't know how that mixture truly affects each individual person.

A new study in JAMA Network that looked at more than 1 million Medicare patients found almost 14% of them were taking a potentially harmful mix of antidepressants, antipsychotics, antiepileptics, benzodiazepines such as Valium and Ativan, nonbenzodiazepine benzodiazepine receptor agonist hypnotics such as Ambien or Sonata, and opioids. And almost a third of those folks were taking five or more such medications. The most common medication combination included an antidepressant, an antiepileptic, and an antipsychotic. Gabapentin was the most common medication — often for off-label uses, such as to ease chronic pain or treat psychiatric disorders, according to the researchers from the University of Michigan.

Keep Reading Show less