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Written Question
Fluoride: Drinking Water
Wednesday 9th July 2025

Asked by: Lord Reay (Conservative - Excepted Hereditary)

Question to the Department of Health and Social Care:

To ask His Majesty's Government what assessment they have made of the US National Toxicology Program’s Monograph on the State of the Science Concerning Fluoride Exposure and Neurodevelopment and Cognition: A Systematic Review, published in August 2024, and of its implications for the fluoridation of drinking water in England.

Answered by Baroness Merron - Parliamentary Under-Secretary (Department of Health and Social Care)

The US National Toxicology Program conducted a systematic review of the published scientific literature on the association between fluoride exposure and neurodevelopment and cognition. It concluded that there is “moderate confidence” that levels of fluoride intake, such as those approximated to be from drinking water concentrations greater than the World Health Organization’s (WHO) drinking water Guideline Value of 1.5 milligrams per litre, were associated with lower IQ in children. The target dose for fluoridated drinking water in England is below this value, at one milligram per litre.

There is no convincing evidence for adverse health effects from exposure to fluoride in drinking water below the WHO Guideline Value or the United Kingdom’s drinking water regulatory limit of 1.5 milligrams per litre. This value is intended to be protective of health for the whole population for a lifetime of exposure. My Rt Hon. Friend, the Secretary of State for Health and Social Care has a legal responsibility to monitor health impacts of fluoridated drinking water, and the next report will be published in 2026.


Speech in Grand Committee - Tue 25 Oct 2022
Water Fluoridation (Consultation) (England) Regulations 2022

"My Lords, I have spoken previously in the House in Committee and at Second Reading of the Health and Care Bill about how the Government’s water fluoridation policy is considered to be misguided by numerous eminent scientists in the UK and overseas, including government advisers. They warn that fluoridation causes …..."
Lord Reay - View Speech

View all Lord Reay (Con - Excepted Hereditary) contributions to the debate on: Water Fluoridation (Consultation) (England) Regulations 2022

Written Question
Heart Diseases: Diagnosis
Thursday 28th April 2022

Asked by: Lord Reay (Conservative - Excepted Hereditary)

Question to the Department of Health and Social Care:

To ask Her Majesty's Government what assessment they have made of the recent increase in referrals to heart failure diagnostic clinics throughout NHS Trusts in England.

Answered by Lord Kamall - Shadow Minister (Health and Social Care)

No specific assessment has been made.


Speech in Lords Chamber - Mon 31 Jan 2022
Health and Care Bill

"My Lords, I have added my name in opposition to Clauses 147 and 148 standing part of the Bill—tabled by my noble friend Lady McIntosh of Pickering and supported by the noble Baroness, Lady Jones of Moulsecoomb. These clauses enshrine the Government’s intentions to expand the rollout of water fluoridation …..."
Lord Reay - View Speech

View all Lord Reay (Con - Excepted Hereditary) contributions to the debate on: Health and Care Bill

Speech in Lords Chamber - Tue 07 Dec 2021
Health and Care Bill

"My Lords, I extend a warm welcome to the noble Lord, Lord Stevens, although like my noble friend Lady McIntosh, I respectfully disagree on the topic of water fluoridation, a measure that I strongly oppose and that I will focus on tonight.

It is disappointing that mandatory fluoridation has been …..."

Lord Reay - View Speech

View all Lord Reay (Con - Excepted Hereditary) contributions to the debate on: Health and Care Bill