Three claims about your circulation that need a verdict

Only 40% of women over 50 have had their full lipid panel explained to them beyond "good" and "bad" cholesterol. Today we are fixing that.

TODAY'S TOPIC: Blood, Circulation, and Cholesterol

"LDL is 'bad' cholesterol and you want it as low as possible, period."

LDL earned its nickname decades ago, and it stuck. But not all LDL particles behave the same way.

Small, dense LDL particles are far more likely to lodge in artery walls than large, buoyant ones. Two women can have the same total LDL number and very different cardiovascular risk profiles based on particle size alone.

The number still matters. Consistently elevated LDL is a well-established risk factor for heart disease. But "as low as possible, period" skips over the conversation about particle type, triglyceride ratios, and what the number actually means for your specific body.

Ask for the full picture, not just the headline number.

"Fish oil supplements thin your blood enough to be dangerous before surgery."

This one surprises people because fish oil sits on the shelf next to vitamins and seems harmless. It is not harmless in every context.

Omega-3 fatty acids reduce platelet aggregation, which is a clinical way of saying they make your blood less sticky. At high doses, this effect is significant enough that many surgeons ask patients to stop fish oil two weeks before a procedure.

A growing body of research confirms the antiplatelet effect. If you are taking a prescription blood thinner on top of a fish oil supplement, the combined effect can increase bleeding risk more than either one alone.

This does not mean fish oil is dangerous day to day. It means it is doing something real to your blood, and your surgical team needs to know about it.

"Poor circulation causes cold hands and feet, and there is nothing you can do about it."

Cold extremities are common in women, especially after menopause. But "poor circulation" is often used as a vague catch-all when the cause is actually identifiable and addressable.

Estrogen plays a role in how blood vessels dilate. When estrogen drops, blood vessels in the hands and feet can constrict more easily in response to cold or stress. That is not a permanent malfunction. It is a hormonal shift with specific mechanisms.

Raynaud's phenomenon, which causes exaggerated blood vessel spasms in the fingers and toes, affects women at roughly nine times the rate it affects men. It is diagnosable, and there are treatments that help.

"Nothing you can do" is almost never the right answer when the cause has not been investigated.

Your blood is doing more than you give it credit for. It is worth knowing exactly what it is up to.