The deficiency you didn't know you had

You might think you're getting all the vitamin D you need -- but odds are, you're not.

Even if you get out under the sun each day... even if you take a high-quality D supplement... you could STILL fall badly short.

Millions of Americans are struggling to get the right levels of the sunshine vitamin, but are being secretly undermined without even realizing it.

And you could be one of them!

The latest research shows how chemicals all around you -- chemicals all over your home at this very moment -- can cause your D levels to plunge.

You've probably heard of these toxins, including the BPA used in plastic food packages and the phthalates found in everything from shampoo to flooring.

You may even be doing your level best to avoid them.

And if you're not, it's time to make a clean sweep and limit your sources of exposure to them as soon as possible -- because the study finds that the higher the levels of these chemicals in your body, the lower your levels of essential vitamin D.

The link is stronger in women, but it's also there in men -- especially with phthalates.

The new study doesn't spot the reason for it, but it's been shown by other researchers that these chemicals can activate a gene in your body that essentially shuts down vitamin D.

Sadly, that's not all endocrine-disruptors such as BPA and phthalates can do inside the human body. They've also been linked to obesity, sex problems, diabetes, and more.

Obviously, it's time to get serious about avoiding these chemicals.

But unfortunately, it's not as easy as you would hope.

While there's a big market now for "BPA-free" products, much of the supposedly safer items for sale aren't much safer at all.

In many cases, they've simply swapped one bad chemical for another, replacing BPA with the chemical BPS -- which causes much of the same damage inside the body.

Instead of looking for BPA-free plastics, avoid plastics altogether. Store foods and water in glass and stainless steel, and make the switch to fresh organics whenever possible.

Avoiding phthalates is even tougher. But while you may not be able to eliminate them, you certainly can cut your exposure and reduce your risk by being careful about what you use and what you bring into your home.

The most common sources are soaps and cosmetics, and while the phthalates aren't usually listed on the label, there's an online database you can check run by Environmental Working Group.

It's called "Skin Deep," and you can view the full list of the chemicals in common personal care products as well as the risks that have been linked to them by clicking here.