This is due to the termination of massive injection of foreign aid and investment of that country into Cuba. The Cuban government has attempted to remain firm in its commitments to the principles of the revolution, but has had to accommodate to the new realities. A Cuban taxi in Guantanamo. Basic resources are limited. The USA blockade is blamed for the scarcity of just about everything.
Salaries are low, commodities are scarce or too expensive.
The fact that everybody is in the same boat seems to help people cope with scarcity. But scarcity of some things is also due to firmly fixed commitments to the vision of the revolution in other things. Cubans are healthy, and we saw no evidence of abnormal lack of nutrition. Cuba is a fit and healthy population. There continues to be housing for all, however sub-standard one might regard it to be.