Overview â The distinctive tiger shark lives in both coastal and open seawaters, usually from the surface to around 459 feet. Young members of this species sport black stripes arranged over their otherwise gray backs and sides. These stripes can fade as the shark ages, making it look more like a great white than a tiger shark. Somehow it seems appropriate that this nocturnal, aggressive shark prefers dark, murky waters.
Obesity is one of the most important causes of bowel cancer [6, 9, 10]. Some groups have estimated that being overweight or obese causes about 11-14% of bowel cancer cases [10, 15, 17, 18]. Many large studies have found that bowel cancer is more common in overweight or obese people [7, 22-25].
Recent research shows that in some cases, certain genetic factors may cause the changes in appetite and fat metabolism that lead to obesity. For a person who is genetically prone to weight gain (e.g., has a lower metabolism) and who leads an inactive and unhealthy lifestyle, the risk of becoming obese is high.