Optimized Bioregenerative Space Diet Selection With Crew Choice

Abstract

Previous studies on optimization of crew diets have not accounted for choice. A diet selection model with crew choice was developed. Scenario analyses were conducted to assess the feasibility and cost of certain crew preferences, such as preferences for numerous-desserts, high-salt, and high-acceptability foods. For comparison purposes, a no-choice and a random-choice scenario were considered.The model was found to be feasible in terms of food variety and overall costs.The numerous-desserts, high-acceptability, and random-choice scenarios all resulted in feasible solutions costing between 13.2 and 17.3 kg ESM/person-day.Only the high-sodium scenario yielded an infeasible solution. This occurred when the foods highest in salt content were selected for the crew-choice portion of the diet. This infeasibility can be avoided by limiting the total sodium content in the crew-choice portion of the diet. Cost savings were found by reducing food variety in scenarios where the preference bias strongly affected nutritional content.

Patient education for phosphorus management in chronic kidney disease

“…This can be overcome by diversifying the diet to include additional low-phosphorus, high-protein alternatives (eg, poultry). Variety is important, although choice should be limited where preference bias strongly affects nutritional content 50. Phosphorus binder use can also help overcome food fatigue by allowing patients’ preferred mainstream foods while moderating their impact on serum phosphorus levels.…”