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21. Garlic and Heavy Metals
When taken at high doses, garlic’s sulfur compounds have been shown in studies to protect against organ damage which is caused from heavy metal toxicity.
A four week study of people who worked at a car battery plant (excessive exposure to lead exposure there) found that garlic had reduced lead in the blood by 19%. Also they found that garlic had reduced many clinical toxicity markers. This included headaches and blood pressure.
Just three garlic doses of per day outperformed the drug D-penicillamine in these symptom reduction.
22. Garlic and Bone Health
To my knowledge no human trials have measured the effects of garlic as it relates to bone loss. However, laboratory rat studies found that it can minimizes bone loss by increasing estrogen in females.
One study involving menopausal women discovered that taking a daily dose of dry garlic extract (about 2 grams of raw garlic) significantly decreased a markers related to estrogen deficiency. This would tend to suggests that garlic may have beneficial effects and help concerning bone health in women.
Foods like garlic and onions have also been proven to have beneficial effects on osteoarthritis.