Tag: Meta analysis

A 2015 meta-analysis published in the *Journal of Science and Medicine in Sport* concluded that caffeine does, in fact, cause diuresis in adults, but the effect is minor and completely negated during exercise. The findings challenge the long-held myth that moderate caffeine consumption significantly impairs hydration and performance.

Given the inherent complexity of measuring individual dietary intakes and patterns, nutrition researchers employ a wide variety of scientific approaches to address specific health questions. What are the research designs used in nutrition research, and how do they contribute to the evidence base that shapes dietary recommendations and public health policy?

According to a 2022 meta-analysis published in the journal *Clinical Nutrition ESPEN*, caffeine ingestion may enhance isometric handgrip strength, showing a small but statistically significant effect.

According to a recent systematic review and meta-analysis, low caffeine doses of approximately 1 to 2 mg/kg enhance jumping height. The key finding explores what is the effect of low caffeine doses on jumping performance a meta-analysis, providing valuable insights for athletes seeking a performance edge with minimal side effects. This confirms that a moderate boost in power can be achieved without the high doses previously thought necessary.

According to a 2019 meta-analysis published in the *International Journal of Medical Biochemistry*, the prevalence of vitamin D deficiency in the Turkish population was estimated at 63%. This highlights a significant public health issue that persists despite the country's abundant sun exposure, indicating a complex interplay of factors influencing vitamin D levels.

Recent systematic reviews and meta-analyses suggest that consuming whole milk and cheese may not increase the risk of cardiovascular disease, a notable departure from previous dietary guidelines. These new research findings highlight that the 'dairy matrix'—the overall structure and components of dairy foods—plays a more significant role than just saturated fat content.

Numerous meta-analyses and systematic reviews confirm that sodium bicarbonate can acutely enhance anaerobic power and capacity, with average performance gains of 2–3% reported in high-intensity efforts lasting between 30 seconds and 12 minutes. This makes it a popular and widely studied ergogenic aid.

A 2021 review noted that well-designed dietary clinical trials are necessary to advance nutrition science and produce reliable evidence. This highlights the necessity of understanding what is the scientific method of nutrition research, the systematic process used to inform dietary recommendations and improve public health.

Recent meta-analysis, based on a systematic review of 26 studies published between 2013 and 2024, has produced estimated prevalence rates for Avoidant/Restrictive Food Intake Disorder (ARFID). This growing body of research sheds light on how common ARFID truly is, demonstrating that it is a serious and prevalent disorder across various populations. However, the variation in study quality and methodology significantly impacts these prevalence estimates, highlighting the need for more robust research in the future.

For decades, low-fat dairy was championed as the heart-healthy choice to limit saturated fat intake. But as nutritional science evolves, many are now questioning: is low-fat dairy safe, or are its full-fat counterparts just as healthy, if not more so? This article unpacks the latest research to help clarify the safety and benefits of different dairy types.