Being obese is not the same as being well fed.
Also, I'd never propose universal basic income as a complete solution. UBI doesn't make our complicated world suddenly simple without any effort. It requires a certain level of economic especially agricultural productivity for us to even consider ubi as viable for a large economy like ours.
Firstly, ubi like single payer universal healthcare will not be free of cost. I expect full cooperation from my work force in this matter. Taxes will have to go up, at least in the short to medium term and incentives and deductions must come down. The economy will likely suffer a slowdown in the short and medium term as well. We can't turn back and run away. We need a clear commitment and mandate to stay the course even if it send incredibly stupid do so.
Secondly, in my mind universal basic income requires a certain level of community support. As the saying goes "man can't live on bread alone". People need a reason to live. Perhaps indoctrination is to string of a word but we'd need a support structure to motivate people. While I strongly believe people are inherently good and not evil, it will be a difficult challenge to motivate people without the easy monetary benefit.
Thirdly, I think ubi requires a certain level of automation in what we shall term as essential goods and services. This means these guys and services should continue to flourish and flourish highly efficiently even if the workforce shows low participation. In other words, we will need a way to keep our utilities like water and electricity, our infrastructure like roads and Internet connectivity, our food supply and so on to pretty much work on autopilot.
What do you think?
Edit: in my mind, ubi replaces most if not all other entitlement and welfare programs. An important premise of ubi is we will save money on compliance such as trying to make sure wic money only goes to qualified people. If we extended wic to all children, we would not have to determine eligibility. This I think will help adoption and help remove stigma of welfare.