Un studiu recent încearcă să demonstreze că recomandările generale ale Organizației Mondiale a Sănătății (OMS) privitoare la indicele de masă corporală (IMC) nu ar fi valabile și pentru persoanele vârstnice. Peste 65 de ani, nu cei mai slabi trăiesc cel mai mult, scrie metronews.fr., citat de Agerpres. Greutatea ideală a vârstnicilor ar fi astfel mai mare decât ceea ce se consideră în prezent a fi normal. S-a arătat mereu că greutatea în exces este nefastă pentru sănătate și, prin urmare, pentru speranța de viață. Însă noul studiu sugerează că o greutate în plus ar putea fi benefică la cei care au peste 65 de ani și numai dacă este vorba de câteva kilograme.
Cercetători de la Universitatea din Deakin (Australia) explică în revista American Journal of Clinical Nutrition că vârstnicii cu un IMC ușor mai mare decât recomandările oficiale ar trăi mai mult. Potrivit OMS, IMC-ul de referință pentru persoanele în vârstă este cuprins între 18,5 și 25. După ce au analizat studii realizate între 1990 și 2013 pe 200.000 de persoane, cercetătorii au constatat că riscul de mortalitate crește cu 12 la sută când IMC este de 21-22 și cu 19 la sută când se cifrează la 20-20,9. Și la persoanele cu un IMC mai mare de 33 – considerate obeze-, riscurile cresc cu 8 la sută.
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