On the surface, this appears to contradict decades of research showing that plant-based diets are good for your health. Vegetarian diets, for example, have been consistently linked to lower risks of heart disease and stroke<\/a>, type 2 diabetes<\/a> and obesity<\/a>. These benefits come partly from higher fibre intake and lower saturated fat consumption.<\/p>\n So what\u2019s going on? Before drawing any firm conclusions, there are several important factors to consider.<\/p>\n Your body\u2019s needs change as you age<\/p>\n This study focused on adults aged 80 and older, whose nutritional needs differ markedly from those of younger people. As we age, physiological changes alter both how much we eat and what nutrients we need. Energy expenditure drops<\/a>, while muscle mass, bone density<\/a> and appetite<\/a> often decline. These shifts increase the risk of malnutrition<\/a> and frailty<\/a>.<\/p>\n Most evidence for the health benefits of diets that exclude meat comes from studies of younger adults rather than frail older populations. Some research suggests older non-meat eaters face a higher risk of fractures<\/a> due to lower calcium and protein intake.<\/p>\n In later life, nutritional priorities shift<\/a>. Rather than focusing on preventing long-term diseases, the goal becomes maintaining muscle mass, preventing weight loss and ensuring every mouthful delivers plenty of nutrients.<\/p>\n The study\u2019s findings may, therefore, reflect the nutritional challenges of advanced age, rather than any inherent problems with plant-based diets. Crucially, this doesn\u2019t diminish the well-established health benefits of these diets for younger and healthier adults.<\/p>\n Maintaining muscle mass in older age is important, and that requires protein. Here\u2019s a crucial detail: the lower likelihood of reaching 100 among non-meat eaters was only observed in underweight participants. No such association was found in older adults of healthy weight.<\/p>\n Being underweight in older age is already strongly linked with increased risks of frailty<\/a> and death<\/a>. Body weight therefore appears to be a key factor in explaining these findings.<\/p>\n It\u2019s also worth remembering that this was an observational study, meaning it shows associations rather than cause and effect. Just because two things occur together doesn\u2019t mean one causes the other.<\/p>\n![\"Older](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/01\/file-20260123-56-nlkyvb.jpg\")
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