Micronutrients and bioactive substances: Their potential roles in combating COVID-19.

Objectives: The coronavirus disease 2019 (COVID-19) pandemic is seriously threatening public health and setting off huge economic crises across the world. In the absence of specific drugs for COVID-19, there is an urgent need to look for alternative approaches. Therefore, the aim of this paper was to review the roles of micronutrients and bioactive substances as potential alternative approaches in combating COVID-19.

Impact of the natural resource of UVB on the content of vitamin D in oyster mushroom () under subtropical settings.

Vitamin D deficiency is a pandemic problem. Non-animal source of vitamin D is obtained from edible mushrooms. Oyster mushroom () was sliced into the size of 1 cm, 4 cm and 9 cm, and treated with the sun as a natural resource of UVB under subtropical settings in Ethiopia.

Vitamin A and zinc deficiencies among tuberculosis patients in Ethiopia.

Background: The link between tuberculosis (TB) and malnutrition has long been recognized. Vitamin A and zinc deficiencies may reduce the host defenses and increase the risk for diseases.

Objective: The aim of the present study was to estimate the difference in vitamin A and zinc deficiencies together with dietary intakes among pulmonary TB patients and controls.

Vitamin D deficiencies among tuberculosis patients in Africa: A systematic review.

The aim of this study was to explore the existence of vitamin D deficiency (VDD) in tuberculosis (TB) patients living in Africa and to identify its predictor variables. PRISMA guidelines and checklists were used. The sources of the data were Medline/PubMed, Web of Science, Scopus, and Google Scholar databases.