"Scott used to secure the lead weights on his fishing line with a nice hard bite. Yikes! Is the horse out of the barn, or can we do anything now to reverse the effects of the exposure?"

Theresa, I’m so glad you asked! When we get lead in our mouths, it makes its way into our bloodstreams where it can cause damage to our brains and other organs. Our bodies take the lead from our blood and store almost all of it in our bones and teeth where it does much less harm. The history of lead exposures throughout our life is often detectable there, telling a story like the rings on a tree.

The lead stays pretty much locked away in our bones, except in three times in our lives when the bones are in transition, and when calcium and lead in our bones re-enter the blood stream: pregnancy, nursing, and aging (osteoporosis).

Convincing placebo-controlled studies have shown that pregnant or nursing women who take extra calcium end up with less lead in their blood – and in their babies. Another study even showed newborns whose mothers had at least 7 glasses of milk a week ended up with lower lead levels at birth.

This made me wonder: might we be able to lower blood lead levels by eating chia seeds, or going for a walk outside, or enjoying a spinach salad, or playing a vigorous game of tennis, or opting for iced tea instead of cola, or choosing the pasta sauce with lower sodium, or asking those who smoke to smoke outside?

We want to do what we can to keep our calcium (and lead) locked in our bones. I suspect that other measures proven to keep our bones strong will also protect us from lead. These are my strong hunches, not tested yet for lead as far as I know (someone please do this!).

My eight suggestions for protecting you from past lead exposures:

1. Be sure to get at least 1000 mg of calcium each day – especially sure if you are pregnant or nursing. The number is higher if you’re a teen mom (1300 mg) and again after age 50 for men and women (1200 mg). If you’re not getting it in your diet, take a supplement. The women in the studies took a 1200 mg as a supplement, in addition to whatever they got in their diets.

2. Be sure to get plenty of magnesium in your diet. Most of the magnesium in our bodies lives in our bones, and it plays a major role in keeping minerals in our bones. Adult women need at least 310-320 mg per day; adult men need at least 400-420 mg. Magnesium-rich foods include spinach and other dark leafy greens, soy, seeds (pumpkin seeds, sunflower seeds, sesame seeds, and especially chia seeds), beans, broccoli, almonds, salmon, and halibut. If you take a calcium supplement, you might want to choose one with calcium and magnesium.

3. Be sure you’re getting plenty of vitamin D to keep your bones strong. Again, if you’re not getting plenty from the sun or your diet, I suggest a supplement – 1000 IU a day.

4. Be sure you’re getting plenty of vitamin K in your diet. Adult women need at least 90 mcg per day; adult men need at least 120 mcg. Vitamin K is vital for bone health and for getting the most out of vitamin D. Vitamin K-rich foods include spinach, broccoli, romaine lettuce, asparagus, green beans, peas, carrots, cauliflower, and tomatoes. If you’re taking a vitamin D supplement, you might want to choose one with vitamins D and K.

5. Be sure to get weight-bearing exercise. This helps to keep your calcium in your bones. Walk at least 30 minutes a day.