Medics claim there is "compelling evidence" that spending hours glued to TVs, computers and smartphones is a childhood obesity nutrient, The sun Reporting.
The World Cancer Research report found that increased exposure to smartphones, tablets and game consoles in childhood has led to long-term weight gain – identified as one of the major causes of cancer
Caroline Cerny, from the Health and Obesity Alliance also warned that eating too much healthy food and drinking, with an active lifestyle contributes to weight gain and obesity.
"We also know that when children spend time in front of screens, they are bombarded with junk commercials," Cerny said.
"This new report highlights the dangers of unhealthy lifestyles and exposure of children to advertising."
According to the NZ Herald, a new analysis examined 80 studies involving more than 200,000 people in order to examine the causes of increased obesity and identified screen time in childhood as one of the main culprits.
This results from the findings of a WRCF link being overweight or obese to 12 common types of cancer, including breast, prostate, colon, liver, ovarian, kidney and pancreatic disease.
"Eating unhealthy food and drinks, with an inactive lifestyle contributing to excess weight and obesity – that's a lot of clear, we also know that when children spend time in front of screens, they are bombarded with junk ads," Sereny said.
Sophia Lawes, of the UK Cancer Institute, warned that obese children were five times more likely to be obese as adults, "which means they will be at increased risk for 13 different cancers."
"That's why it's essential that we see a 9:00 water episode on junk TV commercials on television and similar protection for children viewing advertisements on demand online."
Around two out of three adults are overweight or obese.
The report warns of excessive consumption of sweet drinks and junk food also sustains obesity, increasing the risk of cancer.
The study also found that breastfed children were less likely to be obese.