Question: What health problems in humans has the kind of poisoning explaining Newton's later life been directly linked to?

full_context: Document 1: Age of Enlightenment: The influence of science also began appearing more commonly in poetry and literature during the Enlightenment. Some poetry became infused with scientific metaphor and imagery, while other poems were written directly about scientific topics. Sir Richard Blackmore committed the Newtonian system to verse in Creation, a Philosophical Poem in Seven Books (1712). After Newton's death in 1727, poems were composed in his honour for decades. James Thomson (1700–1748) penned his "Poem to the Memory of Newton," which mourned the loss of Newton, but also praised his science and legacy.
Document 2: Noise pollution: The Environmental Protection Agency retains authority to investigate and study noise and its effect, disseminate information to the public regarding noise pollution and its adverse health effects, respond to inquiries on matters related to noise, and evaluate the effectiveness of existing regulations for protecting the public health and welfare, pursuant to the Noise Control Act of 1972 and the Quiet Communities Act of 1978.
Document 3: Paper: Conventional bleaching of wood pulp using elemental chlorine produces and releases into the environment large amounts of chlorinated organic compounds, including chlorinated dioxins. Dioxins are recognized as a persistent environmental pollutant, regulated internationally by the Stockholm Convention on Persistent Organic Pollutants. Dioxins are highly toxic, and health effects on humans include reproductive, developmental, immune and hormonal problems. They are known to be carcinogenic. Over 90% of human exposure is through food, primarily meat, dairy, fish and shellfish, as dioxins accumulate in the food chain in the fatty tissue of animals.
Document 4: Nutrition: Another study examining the health and nutrition literacy status of residents of the lower Mississippi Delta found that 52 percent of participants had a high likelihood of limited literacy skills. While a precise comparison between the NAAL and Delta studies is difficult, primarily because of methodological differences, Zoellner et al. suggest that health literacy rates in the Mississippi Delta region are different from the U.S. general population and that they help establish the scope of the problem of health literacy among adults in the Delta region. For example, only 12 percent of study participants identified the My Pyramid graphic two years after it had been launched by the USDA. The study also found significant relationships between nutrition literacy and income level and nutrition literacy and educational attainment further delineating priorities for the region.
Document 5: John, King of England: John's illness grew worse and by the time he reached Newark Castle he was unable to travel any farther; John died on the night of 18 October. Numerous – probably fictitious – accounts circulated soon after his death that he had been killed by poisoned ale, poisoned plums or a "surfeit of peaches". His body was escorted south by a company of mercenaries and he was buried in Worcester Cathedral in front of the altar of St Wulfstan. A new sarcophagus with an effigy was made for him in 1232, in which his remains now rest.
Document 6: Burials and memorials in Westminster Abbey: Subsequently, it became one of Britain's most significant honours to be buried or commemorated here. The practice of burying national figures in the Abbey began under Oliver Cromwell with the burial of Admiral Robert Blake in 1657. The practice spread to include generals, admirals, politicians, doctors and scientists such as Isaac Newton, buried on 4 April 1727 and Charles Darwin buried 19 April 1882.
Document 7: Westminster Abbey: Subsequently, it became one of Britain's most significant honours to be buried or commemorated in the abbey. The practice of burying national figures in the abbey began under Oliver Cromwell with the burial of Admiral Robert Blake in 1657. The practice spread to include generals, admirals, politicians, doctors and scientists such as Isaac Newton, buried on 4 April 1727, and Charles Darwin, buried 26 April 1882. Another was William Wilberforce who led the movement to abolish slavery in the United Kingdom and the Plantations, buried on 3 August 1833. Wilberforce was buried in the north transept, close to his friend, the former Prime Minister, William Pitt.[citation needed]
Document 8: Henry Cavendish: Cavendish died in 1810 (as one of the wealthiest men in Britain) and was buried, along with many of his ancestors, in the church that is now Derby Cathedral. The road he used to live on in Derby has been named after him. The University of Cambridge's Cavendish Laboratory was endowed by one of Cavendish's later relatives, William Cavendish, 7th Duke of Devonshire (Chancellor of the University from 1861 to 1891).
Document 9: Isaac Newton: Newton died in his sleep in London on 20 March 1727 (OS 20 March 1726; NS 31 March 1727). His body was buried in Westminster Abbey. Voltaire may have been present at his funeral. A bachelor, he had divested much of his estate to relatives during his last years, and died intestate. His papers went to John Conduitt and Catherine Barton. After his death, Newton's hair was examined and found to contain mercury, probably resulting from his alchemical pursuits. Mercury poisoning could explain Newton's eccentricity in late life.
Document 10: Mercury in fish: In the United States, the EPA serves as an advisory organ to set the levels of mercury that are non-fatal in humans. Symptoms of exposure to high levels of methyl mercury include disturbed vision, hearing, and speech, lack of coordination, and muscle weakness. Medical studies have examined the correlation of fish consumption and health issues. American studies have presented evidence of fish consumption and its effects on child development. Longitudinal studies agree that human activities are what release and accumulate mercury in marine life. Addressing the issues of fish consumption forces health officials to recognize the sources of mercury in the human body. Specific Native American tribes are vulnerable to a high exposure of mercury. Studies have determined that these native peoples in the United States suffer more from mercury poisoning and illness than any other cohort group in the country. This is due to the fact that fish is a main source of protein. Exposure risk was assessed through a medical study, thus raising judicial issues of whether the public health of these groups is a priority in the United States.
Document 11: 1971 Iraq poison grain disaster: The 1971 Iraq poison grain disaster was a mass methylmercury poisoning incident that began in late 1971. Grain treated with a methylmercury fungicide and never intended for human consumption was imported into Iraq as seed grain from Mexico and the United States. Due to a number of factors, including foreign-language labelling and late distribution within the growing cycle, this toxic grain was consumed as food by Iraqi residents in rural areas. People suffered from paresthesia (numbness of skin), ataxia (lack of coordination of muscle movements) and vision loss, symptoms similar to those seen when Minamata disease affected Japan. The recorded death toll was 459 people, but figures at least ten times greater have been suggested.  The 1971 poisoning was the largest mercury poisoning disaster when it occurred, with cases peaking in January and February 1972 and stopping by the end of March.
Document 12: Nutrition: At the time of this entry, we were not able to identify any specific nutrition literacy studies in the U.S. at a national level. However, the findings of the 2003 National Assessment of Adult Literacy (NAAL) provide a basis upon which to frame the nutrition literacy problem in the U.S. NAAL introduced the first ever measure of "the degree to which individuals have the capacity to obtain, process and understand basic health information and services needed to make appropriate health decisions" – an objective of Healthy People 2010 and of which nutrition literacy might be considered an important subset. On a scale of below basic, basic, intermediate and proficient, NAAL found 13 percent of adult Americans have proficient health literacy, 44% have intermediate literacy, 29 percent have basic literacy and 14 percent have below basic health literacy. The study found that health literacy increases with education and people living below the level of poverty have lower health literacy than those above it.
Document 13: Nutrition: Research in the field of nutrition has greatly contributed in finding out the essential facts about how environmental depletion can lead to crucial nutrition-related health problems like contamination, spread of contagious diseases, malnutrition, etc. Moreover, environmental contamination due to discharge of agricultural as well as industrial chemicals like organocholrines, heavy metal, and radionucleotides may adversely affect the human and the ecosystem as a whole. As far as safety of the human health is concerned, then these environmental contaminants can reduce people's nutritional status and health. This could directly or indirectly cause drastic changes in their diet habits. Hence, food-based remedial as well as preventive strategies are essential to address global issues like hunger and malnutrition and to enable the susceptible people to adapt themselves to all these environmental as well as socio-economic alterations.
Document 14: Arthur Conan Doyle: Doyle was found clutching his chest in the hall of Windlesham Manor, his house in Crowborough, East Sussex, on 7 July 1930. He died of a heart attack at the age of 71. His last words were directed toward his wife: "You are wonderful." At the time of his death, there was some controversy concerning his burial place, as he was avowedly not a Christian, considering himself a Spiritualist. He was first buried on 11 July 1930 in Windlesham rose garden.
Document 15: Thomas Willoughby Newton: Thomas Willoughby Newton died in New York City on 22 September 1853, aged 49, and is buried in the historic Mount Holly Cemetery in Little Rock. Newton County, Arkansas was named in his honor.
ground_truth: disturbed vision, hearing, and speech, lack of coordination, and muscle weakness
sub_queries: What kind of poisoning helped explain Newton's later life? Answer: Mercury
Mercury has been directly linked to which of the following health problems in humans Answer: disturbed vision, hearing, and speech, lack of coordination, and muscle weakness