<a href=https://explorable.com/cause-and-effect>Establishing Cause and Effect</a>. Cause and effect is one of the most commonly misunderstood concepts in science and is often misused by lawyers, the media, politicians and even scientists themselves, in an attempt to add legitimacy to research.
You can't catch cancer from anyone, in any way. Cancer is not contagious. You can't catch HIV/AIDS just by touching somebody. The AIDS virus is not found in sweat. Yes, you can catch a cold, or the flu by shaking hands with someone if you then put your hands on/near a mucous membrane (eyes, nose, mouth).
Some signs that you may have a cold hand disease include: 1  Cold hands even in mild weather. 2  Pain in the fingers at cold temperatures. 3  The need to wear gloves when handling frozen foods.  Hands turning a white, blue or red 1  color. Problems healing minor wounds on fingertips.