Yesterday’s announcement by the Alzheimer’s Society that dementia will cost the UK almost £91bn a year by 2040 highlights why prevention has to be the way forward. (See the Guardian Article here)
“Dementia’s devastating impact is colossal – on the lives of those it affects, on the healthcare system and on the economy”, said Kate Lee, the Alzheimer’s Society’s chief executive who is calling for the ‘urgent need to prioritise early diagnosis.’ We know here at Food for the Brain, that these costs, could easily be halved by focussing on prevention. A recent study from the UK Biobank data and conducted by two of the charity’s scientific advisors, China’s leading dementia prevention Professor Jin-Tai Yu from Fudan University, and by former deputy head of Oxford University’s school of medical science, Professor David Smith, concluded that “up to 73% of dementia can be prevented” right now by focussing on prevention. (1) The Biobank research, however, didn’t measure homocysteine and thus excluded one of the most easily actioned prevention steps – lowering homocysteine with B vitamins – which the US National Institutes of Health says accounts for 22% of the risk for Alzheimer’s. (2)
Patrick Holford our CEO says “the reality is that over 80 percent of dementia could be prevented right now if we took prevention seriously. The quickest wins are testing people, for free, for cognitive function then identifying those at risk and why they are at risk. Dementia is diagnosed with a cognitive function test and changes occur at least thirty years before a diagnosis. This is doable right now with no cost at all.” We have tested 425,000 people to date with 200 taking the free, validated test every day. This is followed by a ‘cognition’ questionnaire that shows the person exactly what is driving their future risk.
The quick wins are increasing omega-3 fats from seafood and supplements, and lowering high homocysteine with B vitamins. The higher a person’s omega-3 level the better their cognition and the more brain density they have, according to research from Loma Linda University in California. (3) “Half of those over 65 have raised blood homocysteine which is easily lowered with a 10p a day B vitamin supplement.” says Holford “The health economist at Oxford University costed the saving just from this one prevention step as £65 million a year. (4) B vitamins with omega-3 have already been shown to reduce the annual rate of brain shrinkage by 73% in those at risk.” (5) The other big driver, he says, is sugar and ultra-processed foods. “Diabetes doubles dementia risk and accelerates brain shrinkage (6) but we can pick up those with the beginnings of blood sugar problems in mid-life with high but ‘normal’ levels of blood sugar which has been shown to increase Alzheimer’s risk by 14.5%. (7)” he says.
We also offer a ‘home-test kit that those at risk can use to measure homocysteine, omega-3, vitamin D and sugar balance (HbA1c – the test used by GPs to diagnose diabetes) then tells the individual what actions to take to protect their brain and improve their cognition. Research shows that having a low vitamin D level increases triples risk for Alzheimer’s (8) and those who supplement vitamin D cut Alzheimer’s risk by a third. (9)
“None of the major charities are taking prevention and the role of nutrition in brain health seriously.” says Holford, author of a new book Upgrade Your Brain which explains how to dementia-proof your diet and lifestyle. “Kate Lee of the Alzheimer’s Society told me they spend nothing on prevention. Alzheimer’s Research UK told us they spend 4.3% of all research money on non-drug prevention. When 80 percent is preventable surely at least half of research funds should be spent on non-drug prevention? We do not need to wait for more research. Dementia is diagnosed using a cognitive function test done in memory clinics. But by the time a GP refers a patient, it is often too late. We offer exactly this cognitive function test for free, online at foodforthebrain.org. There is no need to wait for a mythical blood test to ‘diagnose early’.
This is like having a blood test to diagnose how unfit you are.” says Holford. “Even if this existed, the critical question for those at risk is how to reduce it. All that is needed is to take prevention seriously. It is not difficult. The government have pledged £166 million for dementia a year but no-one can tell us if any of this is actually to be spent on prevention research or putting prevention into action.”
We are supporting World Alzheimer’s Prevention Day – see alzheimersprevention.info – on Wednesday (May 15th), with the support of thirty of the world’s leading dementia prevention experts.
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Thank you for reading!
Food for the Brain is a non-for-profit educational and research charity that offers a free Cognitive Function Test and assesses your Dementia Risk Index to be able to advise you on how to dementia-proof your diet and lifestyle.
By completing the Cognitive Function Test you are joining our grassroots research initiative to find out what really works for preventing cognitive decline. We share our ongoing research results with you to help you make brain-friendly choices.
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1 Zhang, Y., Chen, SD., Deng, YT. et al. Identifying modifiable factors and their joint effect on dementia risk in the UK Biobank. Nat Hum Behav 7, 1185–1195 (2023).
2 Beydoun MA, Beydoun HA, Gamaldo AA, Teel A, Zonderman AB, Wang Y. Epidemiologic studies of modifiable factors associated with cognition and dementia: systematic review and meta-analysis. BMC Public Health. 2014 Jun 24;14:643. doi: 10.1186/1471-2458-14-643. PMID: 24962204; PMCID: PMC4099157.
3 Loong, S.; Barnes, S.; Gatto, N.M.; Chowdhury, S.; Lee, G.J. Omega-3 Fatty Acids, Cognition, and Brain Volume in Older Adults. Brain Sci.2023,13,1278. https://doi.org/ 10.3390/brainsci13091278.
4 https://doi.org/10.1016/j.trci.2016.07.0
5 Jernerén F, Elshorbagy AK, Oulhaj A, Smith SM, Refsum H, Smith AD (2015). Brain atrophy in cognitively impaired elderly: the importance of long-chain ω-3 fatty acids and B vitamin status in a randomized controlled trial. Am J Clin Nutr. 2015 Jul;102(1):215-21
6 Arvanitakis Z, Wilson RS, Bienias JL, Evans DA, Bennett DA. Diabetes mellitus and risk of Alzheimer disease and decline in cognitive function. Arch Neurol. 2004 May;61(5):661-6. doi: 10.1001/archneur.61.5.661. PMID: 15148141; see alsoYaffe K, Blackwell T, Kanaya AM, Davidowitz N, Barrett-Connor E, Krueger K. Diabetes, impaired fasting glucose, and development of cognitive impairment in older women. Neurology [Internet]. 2004 Aug 24 [cited 2022 Mar 16];63(4):658–63. Available from: https://n.neurology.org/content/63/4/658; see also Tiehuis AM, van der Graaf Y, Visseren FL, Vincken KL, Biessels GJ, Appelman APA, et al. Diabetes Increases Atrophy and Vascular Lesions on Brain MRI in Patients With Symptomatic Arterial Disease. Stroke. 2008 May;39(5):1600–3; see also Samaras K, Lutgers HL, Kochan NA, Crawford JD, Campbell LV, Wen W, et al. The impact of glucose disorders on cognition and brain volumes in the elderly: the Sydney Memory and Ageing Study. AGE [Internet]. 2014 Jan 9 [cited 2022 Aug 5];36(2):977–93. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4039246/
7 Zhang X, Tong T, Chang A, Ang TFA, Tao Q, Auerbach S, Devine S, Qiu WQ, Mez J, Massaro J, Lunetta KL, Au R, Farrer LA. Midlife lipid and glucose levels are associated with Alzheimer’s disease. Alzheimers Dement. 2023 Jan;19(1):181-193. doi: 10.1002/alz.12641. Epub 2022 Mar 23. PMID: 35319157; PMCID: PMC10078665.
8 Vitamin D deficiency increases the risk of Alzheimer’s.112 In a study in France involving 912 elderly patients followed for 12 years, a total of 177 dementia cases occurred. Those with low vitamin D levels had a nearly three-fold increased risk of Alzheimer’s.113
9 Ghahremani M, Smith EE, Chen HY, Creese B, Goodarzi Z, Ismail Z. Vitamin D supplementation and incident dementia: Effects of sex, APOE, and baseline cognitive status. Alzheimers Dement (Amst). 2023 Mar 1;15(1):e12404. doi: 10.1002/dad2.12404. PMID: 36874594; PMCID: PMC9976297.
