A new meta-analysis of clinical trials in Hashimoto’s thyroiditis found that selenium supplements can modestly lower thyroid antibodies and slightly improve thyroid-stimulating hormone (TSH), but the benefits depend a lot on the form, dose, and duration of selenium used.
A 2025 updated meta-analysis found that garlic extracts meaningfully lowered blood pressure in people with diagnosed hypertension compared to placebo.
This analysis included 12 placebo-controlled trials, with over 700 total participants. Across studies, garlic supplementation led to an average reduction of about 8 mmHg systolic and 4 mmHg diastolic blood pressure.
The garlic doses used varied b...
A 2015 analysis from a large Phase 3 clinical trial found something unexpected. Caffeine on its own did not speed the progression of Parkinson’s disease, but combining caffeine with creatine did.
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