Eggs may slash dementia risk Scientists have found that eating an egg could be good for the brain. 30 April 2026 Having an egg for breakfast may help slash dementia risk. A dozen eggs Scientists from Loma Linda University, California, tracked nearly 40,000 adults over 15 years and found those eating eggs twice a week had a reduced risk compared with those who avoided them. Benefits appeared greater among people consuming eggs up to five times weekly, with risk reductions reaching 27 per cent.