For anyone concerned about youngsters on a low carb diet - the term 'keto' was not around 35 years ago - but I went through my first pregnancy after many years eating low carb foods to control my weight - I just ate unrestricted amounts all through the summer - he was a September baby. I was complemented on my lack of weight gain, he was over 9lb when born, very very strong and active, hardly slept, in the top ten percentile for weight gain a very happy healthy little fellow - blond curls poster child looks. Always tall and slender, happier to eat fruit than sweets, he is about 6 ft 3 or 4 - it is hard to tell from my height, almost a foot shorter. His wife gets pregnant if he grins at her mischievously - they have 4 children now and for the first two she was due to give birth in her finals week, and the week before their planned wedding date - I think that he got threatened with a trip to the vet if another one arrived inconveniently. His diet was not restricted - there was no need and he was growing like a weed, but the basic diet was always low carb foods with moderate amounts of carbs for the others in the family. Yes, his contemporaries always noticed that he did not eat loads of carbs - mostly because he was tucking into ham or chicken with no bread as the main part of his lunches.