To the aliens we're basically West Garfield Park in Chicago

 

Alien snack bait: Earth 27.2% fat

Not exactly a giant Hostess Twinkie hanging in space, 27.3% of the calories of which come from fat, but you get the idea.

PLANET GIRTH Two billion people across the world are obese – with one in four battling fat-related diseases, experts warn: Four million people died in 2015 as a result of being too tubby, struck by cancer, heart disease, diabetes and other killer conditions

Earth current population: 7.35 billion.

Speaking of Twinkies, this nutrition professor went on a diet of them for 10 weeks back in 2010, getting his body mass index below 25 and improving his average lipid profile by 26%! He's still alive and kicking in 2016, and even got a promotion.

'I say we take off and nuke the site from orbit. It's the only way to be sure.'

-- Ripley, Aliens, 1986