Food support boosts tuberculosis recovery in Tanzania, review shows

Tuberculosis (TB) remains a major public health challenge in developing countries, and Tanzania is listed among those most affected. Undernutrition makes TB worse, slows recovery and can undermine the success of treatment. To bring together scattered evidence about whether feeding people with TB helps them get better, Philbert Balichene Madoshi led a systematic review of interventional and operational studies. The review searched major research databases, including PubMed, Embase, Scopus and Web of Science, looking for studies published between January 2000 and June 2025. The goal was to identify trials and operational research that tested nutritional approaches — for example, food supplements, micronutrient support and therapeutic feeding — and measured concrete outcomes such as cure rate, treatment completion and mortality, as well as recovery indicators like weight gain and measures of immune response. By focusing on studies that intervened directly with nutrition, the review sought to clarify whether adding nutritional support to standard TB care helps patients survive, complete treatment and regain strength in real-world, resource-limited settings.

The review included randomized controlled trials, quasi-experimental designs and operational research that evaluated nutritional interventions for people with TB. Studies were assessed for risk of bias and overall quality using standardized tools. In total, 18 studies involving about 5,007 participants met the review criteria. Most studies reported positive associations between nutritional support and better treatment outcomes: higher treatment completion rates, enhanced weight gain and lower mortality were commonly described. The review found that micronutrient supplementation produced mixed results across different studies, while macronutrient and food-based interventions tended to show more consistent benefits for recovery and treatment success. Operational studies included in the review also highlighted real-world challenges, noting difficulties in implementation and questions about sustainability when programs are delivered in resource-limited settings. These methods and results together point to a pattern: feeding and broader nutritional support often help, but the details of what, how much and how programs are run matter for success.

The findings carry practical implications for TB programs and health policy. If nutritional interventions — especially macronutrient and food-based support — reliably improve treatment completion, weight gain and survival, then integrating tailored nutritional care into routine TB services could strengthen patient recovery and reduce deaths. At the same time, the mixed results for micronutrient supplements suggest that not all nutrition interventions are equally effective, and that programs should be designed based on local needs and evidence. The operational challenges documented in the review underline the need for sustainable delivery systems, consistent funding and attention to how interventions are implemented on the ground, particularly in resource-limited areas like parts of Tanzania. The authors call for larger, high-quality operational studies to fill remaining gaps and to guide policymakers on how best to include nutritional support in TB care packages, so that benefits seen in research can be delivered reliably to patients in routine health services.