The speaker discusses 8 common lies that people still believe, often perpetuated by parents. These lies include:
1. If you swallow gum, it takes 4 years to digest (actually, the body can pass gum without issues).
2. You can catch a cold from going out in the cold (it's actually caused by viruses).
3. Watching TV too closely can make you go blind (no scientific basis for this).
4. Sugar makes kids hyperactive (not supported by studies).
5. Dogs see in black and white (they actually see in colors, just not as vividly as humans).
6. If you put carrots up your nose, you'll see better (completely false).
7. Milk helps you grow taller (height is determined by genetics).
8. Your hair and nails continue to grow after you die (they appear to grow because of dehydration, not actual growth).
The speaker also mentions the 5-second rule, which claims that bacteria will contaminate food if it's on the floor for more than 5 seconds (there's no scientific basis for this specific time limit).
The video ends with a joke and an invitation to subscribe for more content.
Here are the key facts extracted from the text:
1. Chewing gum can last in the stomach for up to four years before it is eliminated naturally.
2. Colds are caused by viruses, not by cold temperatures.
3. There is no scientific evidence to support the claim that watching television too closely can cause blindness.
4. Dogs do not see in black and white, but their color range is smaller than humans, with primary colors being blue and yellow.
5. Sugar does not make children hyperactive, and the idea that it does is a myth.
6. Acne is not caused by eating chocolate or other specific foods.
7. Height is determined by genetic inheritance, and consuming milk or other foods will not increase a person's height.
8. Hair and nails do not continue to grow after death, but may appear to do so due to the skeletal structure.
9. The 5-second rule, which claims that bacteria will contaminate food if it is left on the floor for more than 5 seconds, is a myth.