PlentaHealth

Plainly written health guides, with the evidence graded

3 guides

Screening & prevention

Edited by Tomas Ottersen, editor responsible for bloodwork and screening.

Do You Need to Fast Before a Cholesterol Test?

Fasting used to be a hard rule for any lipid panel. It has quietly stopped being one for most people — but the reason it survives for some tests and disappears for others is worth understanding before your next blood draw.

Moderate evidence18 Sept 2026

Is 130/85 Blood Pressure High, or Just Elevated?

A systolic reading of 130 looks like it could go either way. The diastolic reading of 85 is what actually decides the category — and under the guideline most US clinics use, it decides in the less comfortable direction.

Strong evidence18 Sept 2026