Spicy food can prolong life and lose weight
As you may know, spiciness is not a taste.
Peppers contain a substance called capsaicin, which acts on the receptors on the pain fibers of the tongue and transmits it to the
brain through the pain transmission pathway. After receiving this pain, the brain will release endorphin to make people feel happy, 
which is why some people love spicy food.
Capsaicin is the chemical in peppers that provides that burn you know and love.
Eating spicy food six or seven days a week — even just once a day — lowered mortality rates by 14 percent, according to a large
 2015 study by Harvard and China National Center for Disease Control and Prevention.
"It seems to rev up the body's fat-burning mechanisms," says Patricia Bridget Lane, a registered dietitian/nutritionist. "That can help
with weight loss and weight management."
A 2012 review article published in the journal Chemical Senses mentioned that those who eat spicy foods like cayenne pepper 
noticed a reduction in their cravings for fatty, sweet, and salty food.
If you're dousing your food in too much hot sauce—or you're eating entirely too many meals that are ultra-high in spice levels—you
could be damaging your body as well.
According to one scientific study in the National Library of Medicine, capsaicin consumed in abundance can irritate the lining of 
your stomach after you eat it. The resulting symptoms of too much capsaicin include "nausea", "vomiting", "abdominal pain", and
"burning diarrhea".
Rebecca Tung, MD, a Florida-based dermatologist said, "When spicy food creates inflammation in the gut—from an
upset stomach, acid reflux, or other symptoms—sometimes this inflammation can also be seen on the skin with 
flushing, acne breakout, or even eczema."
 "Spicy foods can also kill sleep efforts because they cause heartburn. Lying down makes heartburn worse, and the discomfort from
heartburn hinders sleep," said the health experts at WebMD.