Encyclopedia

Direct renin and plasma renin activity are not interchangeable.

Screening cutoff depends on units, method, medications, potassium, and collection protocol.

How you sit or lie down for the sample, and stress during collection, can affect this result. Use the cutoff from the lab that ran your test.

Explore the subjects in an earlier preventive medicine handbook and follow them into current learning.

Explore questions about hormones, sexual health, food, and daily habits in the women’s handbook.

Explore questions about hormones, sexual health, food, and daily habits in the men’s handbook.

Learn why libido, erectile function, testosterone, and fertility are different health questions.

Learn how symptoms, lab results, and health history fit into a thyroid discussion.

Explore bone density, fracture risk, nutrition, activity, and treatment questions.

Learn what progesterone is, how preparations differ, and which symptoms need a closer look.

Explore menopause symptoms and questions about oils, herbs, nutrients, and hormones.

Learn about fibromyalgia and why several possible explanations need individual assessment.