Nihaal Rahman

Mr. Nihaal Rahman

National Center for Child Health and Development
orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2021 in Global Food Security
Verified
Journal Article
Closed access
RSRichard D. Semba
Richard D. Semba
RRRebecca Ramsing
Rebecca Ramsing
NRNihaal Rahman
Nihaal Rahman
KKKlaus Kraemer
Klaus Kraemer
MBMartin W. Bloem
Martin W. Bloem

12 October 2021 in Frontiers in Nutrition
Verified
Journal Article
Open access
RSRichard D. Semba
Richard D. Semba
NRNihaal Rahman
Nihaal Rahman
SDShutong Du
Shutong Du
RRRebecca Ramsing
Rebecca Ramsing
VSValerie Sullivan
Valerie Sullivan
MBMartin W. Bloem
Martin W. Bloem
Background: Legumes are an inexpensive, healthy source of protein, fiber, and micronutrients, have low greenhouse gas and water footprints, and enrich soil through nitrogen fixation. Although higher legume consumption is recommended under US dietary guidelines, legumes currently comprise only a minor part of the US diet.Objectives: To characterize the types of legumes most commonly purchased by US consumers and patterns of legume purchases by state and region, seasonality of legume purchases, and to characterize adults that have a higher intake of legumes.Methods: We examined grocery market, chain supermarket, big box and club stores, Walmart, military commissary, and dollar store retail scanner data from Nielsen collected 2017–2019 and dietary intake from the National Health and Nutrition Examination Survey (NHANES), 2017–2018.Results: The five leading types of legumes purchased in the US were pinto bean, black bean, kidney bean, lima bean, and chickpea. The mean annual per capita expenditure on legumes based on grocery purchases was $4.76 during 2017–2019. The annual per capita expenditure on legumes varied greatly by state with highest expenditure in Louisiana, South Carolina, Florida, Alabama, Mississippi, and lowest expenditure in Washington, New York, and Wisconsin. There were large regional differences in the most commonly purchased legumes. Of 4,741 adults who participated in the 24-h dietary recall in NHANES, 2017–2018, 20.5% reported eating any legumes in the previous 24 h. Those who consumed legumes were more likely to be Hispanic, with a higher education level, with a larger household size (all P < 0.05), but were not different by age, gender, or income level compared to those who did not consume legumes.Conclusion: Although legumes are inexpensive, healthy, and a sustainable source of protein, per capita legume intake remains low in the US and below US dietary guidelines. Further insight is needed into barriers to legume consumption in the US.

31 January 2022 in Nutrients
Verified
Journal Article
Open access
PDF file
NRNihaal Rahman
Nihaal Rahman
KIKazue Ishitsuka
Kazue Ishitsuka
APAurelie Piedvache
Aurelie Piedvache
HTHisako Tanaka
Hisako Tanaka
NMNobuko Murayama
Nobuko Murayama
NMNaho Morisaki
Naho Morisaki
The COVID-19 pandemic has caused changes in the family food environment, resulting in more families relying on convenience food options. This study aimed to investigate diet quality by convenience food options (namely instant, frozen, and take-out foods) among Japanese school children during the COVID-19 pandemic. We examined the relationship between the frequency of consumption of convenience food options and nutritional status of the school children. The participants (671 children, 10–14 years old) were chosen to form a nationally representative sample of the Japanese population. Using questionnaires completed by the participants’ guardians, information was collected on the frequency of instant, frozen, and take-out food consumption. Habitual food and nutrient intake were collected using a validated food frequency questionnaire, completed by the children with help from their guardian(s). “Frequent” consumption was defined as consumption of instant, frozen, and/or take-out foods on more than 5 days per week. Using 19 nutrients and their respective dietary reference intake (DRI) values, an index was created to label each child’s nutrient intake as “Adequate”, “Inadequate”, “Excess”, or “Deficient.” Compared to children with non-frequent consumption, school children with frequent instant food consumption had significantly higher rates of inadequate nutrient intake (risk ratio (RR) = 3.0 [95% CI: 1.6–5.6]) and excess nutrient intake (RR = 2.3 [95% CI: 1.3–4.2]), while school children with frequent take-out food consumption had significantly higher rates of inadequate nutrient intake (RR = 2.1 [95% CI: 1.3–3.3]). There were no significant differences for children with frequent frozen-food intake. These associations did not change when adjusting for sociodemographic factors. Our results suggest that the frequent consumption of instant or take-out foods among school children results in non-adequate nutritional intake.

16 December 2022 in PLOS Global Public Health
Verified
Journal Article
Open access
PDF file
TSTrishul Siddharthan
Trishul Siddharthan
NRNicole M Robertson
Nicole M Robertson
NRNatalie A Rykiel
Natalie A Rykiel
LULindsay J Underhill
Lindsay J Underhill
NRNihaal Rahman
Nihaal Rahman
SPSuzanne L Pollard
Suzanne L Pollard
Introduction: Despite the rising burden of chronic respiratory disease globally, and although many respiratory medications are included in the World Health Organization Essential Medications List (WHO-EML), there is limited information concerning the availability and affordability of treatment drugs for respiratory conditions in low- and middle-income countries (LMICs). Methods: All public and private pharmacies in catchment areas of the Global Excellence in COPD outcomes (GECo) study sites in Bhaktapur, Nepal, Lima, Peru, and Nakaseke, Uganda, were approached in 2017–2019 to assess pricing and availability of medications for the management of asthma and COPD. Results: We surveyed all 63 pharmacies in respective study areas in Nepal (95.2% private), 104 pharmacies in Peru (94.2% private) and 53 pharmacies in Uganda (98.1% private). The availability of any medication for respiratory disease was higher in private (93.3%) compared to public (73.3%) pharmacies. Salbutamol (WHO-EML) monotherapy in any formulation was the most commonly available respiratory medication among the three sites (93.7% Nepal, 86.5% Peru and 79.2% Uganda) while beclomethasone (WHO-EML) was only available in Peru (33.7%) and Nepal (22%). LABA-LAMA combination therapy was only available in Nepal (14.3% of pharmacies surveyed). The monthly treatment cost of respiratory medications was lowest in Nepal according to several cost metrics: the overall monthly cost, the median price ratio comparing medication costs to international reference prices at time of survey in dollars, and in terms of days’ wages of the lowest-paid government worker. For the treatment of intermittent asthma, defined as 100 mcg Salbutamol/Albuterol inhaler, days’ wages ranged from 0.47 days in Nepal and Peru to 3.33 days in Uganda. Conclusion: The availability and pricing of respiratory medications varied across LMIC settings, with medications for acute care of respiratory diseases being more widely available than those for long-term management.

16 March 2021 in Trials
Verified
Journal Article
Open access
PDF file
TSTrishul Siddharthan
Trishul Siddharthan
SPSuzanne L. Pollard
Suzanne L. Pollard
PJPeter Jackson
Peter Jackson
NRNicole M. Robertson
Nicole M. Robertson
AWAdaeze C. Wosu
Adaeze C. Wosu
BKBruce Kirenga
Bruce Kirenga
Background: COPD is a leading cause of death globally, with the majority of morbidity and mortality occurring in low- and middle-income country (LMIC) settings. While tobacco-smoke exposure is the most important risk factor for COPD in high-income settings, household air pollution from biomass smoke combustion is a leading risk factor for COPD in LMICs. Despite the high burden of biomass smoke-related COPD, few studies have evaluated the efficacy of pharmacotherapy in this context. Currently recommended inhaler-based therapy for COPD is neither available nor affordable in most resource-limited settings. Low-dose theophylline is an oral, once-a-day therapy, long used in high-income countries (HICs), which has been proposed for the management of COPD in LMICs in the absence of inhaled steroids and/or bronchodilators. The Low-dose Theophylline for the Management of Biomass-Associated COPD (LODOT-BCOPD) trial investigates the clinical efficacy and cost-effectiveness of low-dose theophylline for the management of biomass-related COPD in a low-income setting. Methods: LODOT-BCOPD is a randomized, double-blind, placebo-controlled trial to test the efficacy of low-dose theophylline in improving respiratory symptoms in 110 participants with moderate to severe COPD in Central Uganda. The inclusion criteria are as follows: (1) age 40 to 80 years, (2) full-time resident of the study area, (3) daily biomass exposure, (4) post-bronchodilator FEV1/FVC below the 5th percentile of the Global Lung Initiative mixed ethnic reference population, and (5) GOLD Grade B-D COPD. Participants will be randomly assigned to receive once daily low-dose theophylline (200 mg ER, Unicontin-E) or placebo for 52 weeks. All participants will receive education about self-management of COPD and rescue salbutamol inhalers. We will measure health status using the St. George’s Respiratory Questionnaire (SGRQ) and quality of life using the EuroQol-5D (EQ-5D) at baseline and every 6 months. In addition, we will assess household air pollution levels, serum inflammatory biomarkers (fibrinogen, hs-CRP), and theophylline levels at baseline, 1 month, and 6 months. The primary outcome is change in SGRQ score at 12 months. Lastly, we will assess the cost-effectiveness of the intervention by calculating quality-adjusted life years (QALYs) from the EQ-5D. Trial registration: ClinicalTrials.gov NCT03984188. Registered on June 12, 2019 Trial acronym: Low-dose Theophylline for the Management of Biomass-Associated COPD (LODOT-BCOPD)

19 October 2020 in Journal of Agriculture, Food Systems, and Community Development
Verified
Journal Article
Open access
PDF file
RSRichard Semba
Richard Semba
RRRebecca Ramsing
Rebecca Ramsing
NRNihaal Rahman
Nihaal Rahman
MBMartin Bloem
Martin Bloem
The COVID-19 pandemic has increased food insecurity, especially among low-income Black and His¬panic families in the United States. Food insecurity is associated with poorer health and higher mortality in adults and greater risk of impaired cognitive development and behavioral problems in children. Pro-viding food for low-income families is an important priority of the COVID-19 response. Food That Connects Us All is a program that provides healthy meals to low-income Black and Hispanic families in Baltimore City. The meals follow guidelines for the planetary health diet, a reference diet developed by the EAT-Lancet Commission to optimize health and be sustainable within planetary boundaries. The planetary health diet consists largely of vegetables, fruit, whole grains, legumes, nuts, and unsaturated oils, with a low to moderate amount of seafood and poultry and with little or no red or processed meats, refined grains, starchy vegetables, and added sugar. In a food survey, participants showed a high level of satisfaction with the taste, appearance, and healthfulness of the meals. Food That Connects Us All is a direct approach to reducing health disparities and demonstrates the feasibility of providing an ideal reference diet to vulnerable low-income families at high risk for poor health outcomes during the pandemic.