Non-communicable diseases (NCDs) such as cardiovascular disease, diabetes, cancer, and chronic respiratory conditions are the leading causes of death globally, largely driven by modifiable lifestyle factors. With growing interest in dietary strategies for NCDs prevention and management, functional foods like watercress (Nasturtium officinale) have attracted attention for their rich phytochemical content and potential health benefits. This narrative review synthesizes 88 sources published between 2019 and March 2025, exploring the effects of watercress bioactive compounds on major NCDs. Watercress is abundant in glucosinolates, isothiocyanates (especially phenethyl isothiocyanate), flavonoids, vitamins, and minerals. These compounds contribute to antioxidant, anti-inflammatory, and metabolic regulatory effects. Preclinical and clinical studies show that watercress supplementation may improve lipid profiles, reduce oxidative stress, and modulate inflammation in cardiovascular and respiratory conditions. It also appears to enhance insulin function and reduce blood glucose levels. In cancer models, watercress extracts exhibit antiproliferative, pro-apoptotic, and chemoprotective properties, with selective toxicity towards cancer cells and protective effects on normal cells. These findings highlight the therapeutic potential of watercress as a dietary adjunct in NCDs prevention and management, supporting the need for further clinical research.

Hypertension, a significant health concern, increases the risk of cardiovascular disease and premature mortality. Caregivers play a crucial role in ensuring optimal care for hypertensive patients and reducing associated complications. Caregivers' basic knowledge, good attitude, and relevant practices are necessary to ensure high-quality care for patients with hypertension. However, there is no research conducted in Malawi that investigated the knowledge, attitude, and practices of caregivers towards hypertension prevention and management. The study aimed to assess knowledge, attitude, and practices towards hypertension and their determinants among caregivers of hypertensive patients in Neno, Malawi. Our study, conducted in Neno, Malawi, involved 422 caregivers of hypertensive patients. We used a cross-sectional study design. Data was collected through a structured questionnaire and analyzed using SPSS Version 22.0. The participants had a mean age of 44.94 years (SD = 9.889), with 63.3 % being female. The mean KAP scores were 38 %, 93.3 %, and 78.7 %, respectively. Positive correlations were found between knowledge and practice (r = +0.252; p < 0.001) and knowledge and attitude (r = +0.255; p < 0.001). However, no significant relationship was observed between attitude and practice (r = +0.064; p = 0.190). Age showed a strong correlation with attitude (r = +0.233; p < 0.001) but not with knowledge or practice. On the other hand, occupation, education level, and caregiver-patient relationship significantly influenced knowledge and attitude but not practice. Gender also demonstrated a notable association with KAP regarding hypertension. Caregivers demonstrated poor knowledge but engaged in good practices. Despite their limited understanding, they maintained an excellent attitude towards hypertension. This highlights the necessity for increased prevention, and control strategies within communities, emphasizing health education on lifestyle modifications and to address the gaps identified in caregivers' understanding in the prevention and management of hypertension.

Hypertension is a widespread and life-threatening condition affecting one-third of adults globally. In low- and middle-income countries, like Malawi, the burden of hypertension is escalating due to inadequate healthcare resources and lifestyle changes. Family members often become primary caregivers, playing a crucial role in managing hypertension through support and adherence to treatment. This study examined caregivers’ knowledge retention by evaluating their pre- and post-health education knowledge levels. This was a prospective cross-sectional study in Neno, Malawi, a rural setting. 422 caregivers were enrolled from the Integrated Chronic Care Clinic (IC3). A structured questionnaire was used to collect baseline, post-health education, and week six data. Using SPSS V 22.0, comparison of knowledge, attitude, and practices (KAP) scores, correlation between KAP and between KAP and social demographic characteristics were done using Wilcoxon signed-rank test, Pearson correlation, and independent t-test respectively. Among the 422 caregivers who participated in the study, 267 (63.2%) were females and mean age was 44.94 years. The baseline mean knowledge level score was 9.5 (38.0%) and rose to 21.08 (84.3%) p = 0.000 immediate post-health education and a 2.1% decrease 20.54 (82.2%) p<0.001 at week six from the immediate post health education score. Attitude improved from 16.76 (93.1%) at baseline to 17.74 (98.6%) at the six-week mark. Similarly, the mean practice score rose from 25.24 (78.9%) at baseline to 27.42 (85.7%) at week six. There was a positive correlation between KAP while age had a negative correlation with knowledge (r = -0.146; p = 0.003). There was a significant difference between different education levels on knowledge retention p = 0.009. There was a positive and good knowledge retention among caregivers of hypertensive patients after health education at the week six mark. With improved knowledge and the ability to retain it resulting in improved attitude and practices, caregivers are a cornerstone for continued and improved hypertension care for the patients.

Antioxidant intake from natural sources may enhance defense systems against oxidative stress induced by environmental factors such as cigarette smoke. Watercress (Nasturtium officinale) is an abundant source of antioxidants. This study aimed to determine the antioxidant effects of watercress consumption in people exposed to cigarette smoke in Chiang Mai, Thailand. Forty-five participants (15 non-smokers, 15 non-smokers with self-reported exposure to secondhand smoke (SHS), and 15 smokers) aged 20–60 years consumed 60 g of fresh watercress with three meals daily for seven days. Clinical characteristics, lipid profiles, total antioxidant capacity, and oxidative stress markers were evaluated before and after the intervention. After 7 days of watercress consumption, body mass index (BMI) and hip circumference significantly decreased among non-smokers. Watercress consumption reduced total cholesterol and low-density lipoprotein cholesterol (LDL-C) levels in smokers and in SHS-exposed non-smokers; however, high-density lipoprotein cholesterol (HDL-C) significantly decreased in SHS-exposed non-smokers. Catalase activity increased, and malondialdehyde levels decreased in all groups. One of the measures of plasma total antioxidant capacity significantly improved in non-smokers. These findings suggest that watercress consumption may improve lipid profiles and mitigate oxidative stress, and that these beneficial effects differ across people with different levels of exposure to cigarette smoke. However, further studies are suggested to clarify these results.

Ocimum species (family Lamiaceae) are among the most extensively utilized medicinal plants across low- and middle-income countries (LMICs), yet their pharmacological evidence base has not been comprehensively synthesized within an LMIC healthcare framework. A systematic review was conducted following PRISMA 2020 guidelines and a prospectively registered protocol (PROSPERO). Five electronic databases, PubMed, Scopus, Embase, Web of Science, and Google Scholar, were searched from January 2010 to December 2025. Studies reporting ethnobotanical, phytochemical, or pharmacological data on any Ocimum species were eligible. The study selection, quality assessment and data extraction were done by two independent reviewers utilizing Rayyan software. Findings were synthesized using a narrative approach. Ninety-seven studies were included. O. basilicum, O. tenuiflorum, and O. gratissimum were most studied. Key bioactive constituents rosmarinic acid, eugenol, linalool, β-caryophyllene, and ursolic acid, demonstrated consistent antimicrobial [minimum inhibitory concentration (MIC): 0.31–1.25 mg/mL], antioxidant [2,2-diphenyl-1-picrylhydrazyl (DPPH) IC₅₀: 12.5–89.3 µg/mL], anti-inflammatory (35–55% edema reduction), and antidiabetic (α-glucosidase IC₅₀: 0.3–1.5 mg/mL) activities. Larvicidal efficacy exceeding 90% against Anopheles spp. was demonstrated in field trials. The safety profile was broadly favorable (LD₅₀ > 5000 mg/kg). Ocimum species represent a pharmacologically credible and preclinically well-supported botanical resource with practical relevance for LMIC health systems, particularly in antimicrobial, antidiabetic, anti-inflammatory, and vector-control applications. To realize their therapeutic potential, future research must prioritize LMIC-contextualized randomized controlled trials, standardized phytochemical reporting, and chemotype-aware product development.

Oxidative stress contributes significantly to chronic disease burden, necessitating identification of accessible dietary antioxidant sources. Pigeon peas (Cajanus cajan L.) contain substantial bioactive compounds, yet most exist in bound forms with limited bioavailability. This study evaluated wild fermentation combined with systematic extraction optimization to enhance antioxidant recovery from pigeon peas. Seeds underwent wild fermentation in brine solution, followed by extraction under varying conditions (seven solvent systems, three temperatures, and three-time durations). Multiple complementary assays assessed antioxidant capacity (total phenolic content, DPPH radical scavenging, ferric reducing power, and ABTS activity). Fermentation substantially improved antioxidant properties across all parameters, with particularly pronounced effects on radical scavenging activities. Extraction optimization identified 70% methanol at 40 °C for 24 h as optimal, demonstrating marked improvements over conventional protocols. Strong intercorrelations among assays confirmed coordinated enhancement of multiple antioxidant mechanisms rather than isolated changes. The findings demonstrate that both biotechnological processing and analytical methodology critically influence antioxidant characterization in pigeon peas. This integrated approach offers practical guidance for developing antioxidant-rich functional foods, particularly relevant for resource-limited settings where pigeon peas serve as dietary staples. The study establishes foundation for translating fermentation technology into nutritional interventions, though further research addressing bioavailability, microbiological characterization, and bioactive compound identification remains essential.