20 Health facts you have gotten totally wrong your whole life

1.  Organic food is pesticide-free and more nutritious.
2.  Eating food within 5 seconds of dropping it on the floor is safe.
3.  The chemical tryptophan in turkey makes you sleepy.
4.  Eating chocolate gives you acne.
5.  An apple a day keeps the doctor away. (Apples are packed with vitamin C and fiber, both of which are important to long-term health, but they aren't all you need. And if certain viruses or bacteria get into your system, an apple will unfortunately do nothing to protect you. Go ahead and get that flu shot, even if you eat apples.)
6.  Natural sugar like honey is better for you than processed sugar.
7.  Coffee stunts your growth.
8.  Eating ice cream will make your cold worse.
9.  Sugar is as addictive as heroin.
10. Sugar causes hyperactivity in children.
11. Your blood turns blue when it's out of oxygen.
12. Humans have five senses. (Sight, smell, taste, hearing, and touch are just the beginning. Don't forget about balance, temperature, and time, as well as proprioception — the body awareness that helps us not walk into things all the time — and nociception, our sense of pain.)
13. Pregnancy gives you "baby brain" and makes you dumb.
14. Humans can't grow new brain cells.
15. Everyone should drink eight glasses of water a day. (A good rule is to drink when you're thirsty — you don't need to count the glasses.)
16. Vaccines cause autism.
17. Cracking your knuckles will give you arthritis.
18. Being cold can give you a cold. (Your doctor will help explain to you that Common Cold is caused by Virus)
19. Being stressed will give you high blood pressure.
20. Humans got HIV because someone had sex with a monkey.

Source: BusinessInsider

Mind-blowing Hair facts. True and Verifiable

1. Hair is made up mostly of keratin, the same protein animals’ horns, hooves, claws, feathers, and beaks are made of.
2. When wet, a healthy strand of hair can stretch an additional 30% of its original length.
3. Hair tends to grow slightly faster in warm weather, because heat stimulates circulation and encourages hair growth.
4. All hair is dead, with the exception of the hair that’s still inside the epidermis of your scalp.
5. Hair contains information about everything that has ever been in your bloodstream, including drugs, and is one of the most commonly used types of forensic evidence.
6. The only thing about you that can’t be identified by your hair is your gender—men’s hair and women’s hair are identical in structure.
7. Black is the most common hair color. Red is the rarest and only exists in about 1 percent of the world’s population, with blonde hair found in 2 percent.
8. As soon as a hair is plucked from its follicle, a new one begins to grow.
9. Hair is 50 percent carbon, 21 percent oxygen, 17 percent nitrogen, 6 percent hydrogen, and 5 percent sulphur.
10. Hair can grow anywhere on the human body with the exception of the palms of hands, soles of feet, eyelids, lips, and mucous membranes.
11. Goosebumps from cold or fear are the result of hair follicles contracting, causing the hair and surrounding skin to bunch up.
12. The average number of hair strands varies by natural color, with blondes having the most and redheads having the fewest.
13. The scientific term for split ends is “trichoptilosis.”
14. Aside from bone marrow, hair is the fastest growing tissue in the body.
15. Balding only begins to become visible once you’ve lost over 50 percent of the hairs from your scalp.
16. At any given time, 90 percent of the hairs in your scalp are growing, while the other 10 percent are resting.
17. A single hair has a lifespan of about five years.
18. Hair acts as a layer of thermally insulating protection for our heads, which lack the insulation that fat provides for the rest of our bodies.
19. Eighty percent of Americans wash their hair twice a day.
20. Each strand of hair can support up to 100 grams in weight. Multiply that by the average 100,000 to 150,000 strands on each head, and your entire head of hair could support the weight equivalent to two elephants.