True or False: Low doses of heavy metals such as lead and copper can cause damage to the central nervous system over time.

The statement is accurate because low doses of heavy metals, including lead and copper, have been shown to cause detrimental effects on the central nervous system over prolonged exposure. Lead exposure, even at low levels, is particularly concerning as it can lead to cognitive deficits, behavioral issues, and impairments in neurodevelopment, especially in children whose nervous systems are still developing.

Copper, though essential in small amounts, can also be toxic in higher concentrations, leading to neurological and psychological symptoms. The accumulation of these metals over time can result in chronic health problems, underscoring the importance of monitoring and regulating heavy metal levels in drinking water and the environment to protect public health.

The other options, such as suggesting that it is solely dependent on dosage or only affects children, misrepresent the broader impact of heavy metals on health. While dosage is a critical factor, the consensus remains that even low exposures can pose risks, particularly when there is prolonged contact or cumulative effects from repeated exposures.