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.
The World Cancer Research Fund concluded that obesity is probably linked to an increased risk of aggressive prostate cancer, based on a 2014 meta-analysis of all the evidence [77]. Obesity isn't linked with risk of prostate cancer overall.
For example, the incidence of type 2 diabetes has increased rapidly in teens, with obesity present in virtually all cases. In addition, obese children are more likely to be obese as adults. Thus, obesity puts a child's health at lifelong higher risk. Causes of childhood obesity Both genes and environment contribute to obesity, but the interaction is far from simple. Obesity is a complex condition with many interrelated causes. There is significant evidence that obesity is at least partly genetic. Certain ethnic groups are more vulnerable to obesity and obesity-related disorders. Genome-wide association studies show that some genes are associated with a higher body mass index.