Gaining

Heavy cream and vitamin mix

In theory, it would be possible to synthesize a fattening concoction with the needed vitamins. I doubt it would be very fun, though.

I don't really know if you can make that out of ingredients and supplies that are easy for purchase for most folks though. Perhaps with certain varieties of weight gain powder mix.

I also don't really know if it could be made in such a way as to reduce health problems. Doesn't it also depend on the kind of sugar and carbs? Likely also depends on whether your family has a history of diabetes.
4 years

Heavy cream and vitamin mix

Some wild fantasy you have there.
4 years