This is a publicity stunt and a hoax. These people are obviously too healthy to be living the way they say they are, and starving those children would be child abuse.
Are they selling nutritional supplements of some sort?
This was a Kali thing back in the 1980s, iirc. And the fraudsters were caught scarfing down food.
Whatshername, Michelle Pfeiffer, was a practioner, I believe.
Actually they DO eat .... 3 times a week.
http://www.dailymail.co.uk/femail/article-4606276/Couple-eat-food-three-times-WEEK.html