Nowdays many people eat everything. (zdanie jest ok, ale 'everything' to znaczy dokladnie co? psy? koty? inne zwierzeta? kamienie?)
'there' (to jest zle slowo, bo to co napisales to jest. Tam jest tluszcz, a chciales napisac ONI - to jest THEY) are fat and 'fell' (zly czas) bad with this and 'started' (czas teraz) 'prepare' (niepotr) dietING because they want TO be slimmer and 'beautifull' (ortog). In THE 21 century dietING is a normal 'things' (tutaj l. poj) which is 'used of' CARRIED OUT BY 60% OF society.I think that dietING is 'usefull' (ortog) for our 'haelth' (ortog).