Background: Cerebrovascular diseases (CVAs) have several risk factors that are categorized as modifiable and nonmodifiable. Periodontal diseases (PD) have a modifiable role in causing CVA, where several studies suggested direct or indirect correlations with systemic diseases. This study aims to summarize, evaluate and analyze all the evidence available in literature, to reach a better understanding of the relation between periodontitis, gingivitis, tooth loss and CVA. Methods: PubMed, Cochrane, Scopus and Web of Science databases were searched for all meta-analyses assessing the effect of PD on CVA in accordance with Joanna Briggs Institute guidance for umbrella reviews in March 2024. Assessment of Multiple Systematic Reviews (AMSTAR) was used for quality assessment. Pooled analysis was performed to assess the effect of periodontitis, gingivitis and tooth loss on CVA, depending on the availability of data using Review Manager Version 5.2.11. Results: Seven of the identified meta-analyses were of high quality, and they were distributed in different countries. Periodontitis was generally associated with a significant increase in CVA risk (OR = 2.32, 95% CI: 1.70, 3.17, p < 0.00001 and RR = 1.22, 95% CI: 1.15–1.29, p < 0.00001), same as tooth loss, but to a lower degree (0.78). However, the effect of gingivitis was insignificant in terms of CVA (RR = 1.32, 95% CI: 1.12–1.56, p = 0.0008). Conclusions: This study confirms the effect of periodontitis and tooth loss on CVA, disregarding any significant role for gingivitis. The relation reached favors the suggested role of some inflammatory changes in the pathogenic pathway leading to atherosclerotic changes.

Background: Hypertension is a major risk factor for ischemic stroke. An important strategy in controlling hypertension is dietary modification. The present study evaluates the effect of Dietary Approaches to Stop Hypertension (DASH) diet on the risk of ischemic stroke. Methods: A case–control study was carried out, including 214 ischemic stroke cases recruited within the first 48 h of diagnosis and 214 controls, divided equally into hospitalized and non-hospitalized participants. Controls were matched to cases based on age and gender. Socio-demographic characteristics were assessed, in addition to adherence to the DASH diet, which was measured using a preconstructed DASH diet index (ranging from 0 (lowest) to 11 (highest)). For stroke patients, Modified Rankin Score (mRS) was measured to assess disability. Results: Smoking, hypertension, hyperlipidemia, atrial fibrillation, and myocardial infarction were significantly associated with ischemic stroke (p < 0.001). Higher adherence to the DASH diet was correlated to lower rates of stroke, where cases scored 5.042 ± 1.486 compared to 6.654 ± 1.471 for controls (p < 0.001). Eating more grains, vegetables, fruits, dairy products, nuts, seeds, and beans, and lower levels of fat, fewer sweets, and less sodium were associated with lower rates of ischemic stroke (p = 0.038 for sweets and p < 0.001 for all the remaining), while meat, poultry, and fish did not have any significant effect (p = 0.46). A multivariate analysis showed that lower adherence to the DASH diet (p < 0.001, OR: 0.526, CI95% 0.428–0.645) was associated with a higher incidence of ischemic stroke and an increased likelihood of having high disability levels (mRS 5–6) (p = 0.041, OR: 2.49 × 10⁻⁸, CI95% 0–2.49 × 10⁻⁸). Conclusions: The relation between the DASH diet and risk of stroke highlights the necessity for strict adherence to dietary restrictions, suggesting a protective role for the DASH diet in stroke pathogenesis and prognosis.

Background: Environmental surroundings reduce the rate of several diseases, especially those related to stressful events. Ischemic stroke can be affected by such events, either directly or through its risk factors. Therefore, the present study evaluates the effects of green spaces and noise exposure on the risk of ischemic stroke. Methods: A case–control study was carried out, including 200 ischemic stroke cases within the first 48 h of diagnosis and 200 controls, divided equally into hospitalized and non-hospitalized participants. Controls were matched to cases based on age and gender. Socio-demographic characteristics were assessed, in addition to environmental surroundings and noise exposure at home and at workplaces. Results: Living in a house, having a house garden, and taking care of the garden were associated with a lower risk of suffering an ischemic stroke (p < 0.001, p < 0.001, and p = 0.009, respectively). However, having buildings as the view from home led to a higher stroke rate (p < 0.001). Working in an urban area, the workplace being surrounded by buildings, and the workplace not being surrounded by green spaces were also associated with a higher risk of suffering an ischemic stroke (p = 0.002, p = 0.001, and p = 0.03, respectively). As for noise exposure, being exposed to traffic noise, human noise, and other types of noise was significantly associated with a higher risk of ischemic stroke, while being exposed to higher levels of natural noise was significantly associated with a lower risk of ischemic stroke. Higher levels of noise were also associated with higher risks of ischemic stroke in homes and workplaces (p < 0.001 and p = 0.008, respectively). Conclusions: Environmental surroundings and noise exposure were found to affect the risk of ischemic stroke. Greater green spaces and lower noise exposure play a protective role against ischemic stroke, suggesting a possible prevention strategy through environmental modifications at home and workplaces.

Background: Stroke is the third most common cause of death in Lebanon. With many preventive strategies identified, stroke remains a national burden, especially in developing countries, where risk factors and epidemiological states are understudied. This study aims to investigate the association of sociodemographic factors and health-related risk factors with age at first ischemic stroke and its recurrence in the Lebanese population. Methods: A retrospective study including 214 ischemic stroke cases was carried out. Sociodemographic characteristics and health-related risk factors were assessed, in addition to disability levels (modified Rankin score (mRS)), age at first ischemic stroke incidence, and number of ischemic strokes. Data were analyzed using SPSS software version 25, including descriptive, bivariate, and multivariate analyses. Results: This study showed that stressful factors were significantly associated with a younger age at first ischemic stroke, such as having no partner (p < 0.001), having employment (p < 0.001), and having migraines (p < 0.001). However, metabolic risk factors were associated with an older age of ischemic stroke, such as hypertension (p < 0.001) and hyperlipidemia (p < 0.001). Moreover, having a partner (OR: 2.136), having a family history of stroke (OR: 2.873), having hyperlipidemia (OR: 3.71), and having atrial fibrillation (OR: 2.521) were associated with ischemic stroke recurrence. Conclusions: Many modifiable factors are associated with age at first ischemic stroke and its recurrence. This study sheds light on the necessity of increasing knowledge and awareness of well-known risk factors in the Lebanese population. These results suggest implementing targeted preventive strategies and highlight the importance of complying with early detection and follow-up measures.