Carrot is heart-friendly

Dietary fiber is divided into two types: soluble (meaning it dissolves
in water) and insoluble. Both types of dietary fiber are important.
They resist digestion and help you feel full, naturally decreasing
your hunger and food intake and keeping weight and body fat down.

The soluble fiber in carrots and other foods helps keep arteries clean
primarily by lowering LDL ("bad") cholesterol. LDL cholesterol helps
plaque form in the arteries, narrowing the passageways and restricting
blood flow to the heart. The process is fairly straightforward, and it
starts with bile acids.

Bile acids are molecules in the body that aid in the formation of
molecule clusters called micelles. Micelles are a necessary component
in the reaction that takes cholesterol from the food we eat and
integrates it into our bodies. When we consume soluble fiber like
carrots, it binds to bile acids, preventing them from participating in
the reactions necessary to form micelles. With micelle formation
reduced, the body's absorption of cholesterol is reduced.

And with cholesterol absorption reduced, less plaque ends up building
up in the arteries. Fiber can be as good as drugs like Lipitor at
lowering cholesterol; if you eat the daily recommended amount of
fiber, you could lower your cholesterol by up to 20 per cent.

Fiber isn't the only reason to eat vegetables, of course. Carrots are
the greatest source of beta-carotene, a substance that acts as both an
antioxidant and a pro-vitamin. Antioxidants can counter cell damage,
which slows aging and disease processes and can help prevent death by
heart disease and cancer. Pro-vitamins are chemicals the body can
convert into vitamins. In the case of carrots, this pro-vitamin is
beta-carotene, which the body converts into vitamin A. Vitamin A helps
the immune system work most effectively, allowing it to fight off
disease and infection.

Health.com