Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
Stephen Simpson, CFA, has 15+ years of experience in financial publishing and editing. He is the operator of the Kratisto Investing blog. Vikki Velasquez is a researcher and writer who has managed, ...
Apr. 7, 2026 Vitamin D levels in midlife may play a bigger role in long-term brain health than previously thought. In a study following nearly 800 people over 16 years, those with higher vitamin D ...
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