Key Highlights
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A study of manatees found they do not show clear taste preferences for sweet, sour, salty, bitter, or umami flavors, unlike many other mammals. This suggests their sense of taste may be less important for food selection, possibly because they are herbivores that eat large amounts of seagrass.
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Following a diet that is good for the planet, known as the Planetary Health Diet, is linked to a lower risk of developing dementia and Alzheimer’s disease. This means that eating more whole grains, fruits, nuts, and vegetables may not only help the environment but also protect your brain health as you age.
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People who closely followed the Planetary Health Diet had fewer of the physical signs of Alzheimer’s disease in their brains after death. This finding provides direct evidence that a healthy diet can lead to a healthier brain structure and may help delay cognitive decline.
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