'If...we don't stop eating' explores the powerful argument that today's obesity epidemic has got nothing on the meltdown which will be caused by fatties in 2020.
If current trends continue, one Brit in every three will be obese. The NHS would collapse under the collective weight of blubber-related health problems.
Parents would routinely outlive their obese children. Children who could have been taught good eating habits, and sat on bikes, today.
In the programme, Tim Lang, professor of food policy at City University, says:
"When will the people wake up and say to government: 'Enough is enough' This slaughter cannot go on."
The programme airs on Wednesday, 7th April at 2100 BST on BBC Two.