Pump up the veggies, beans, and nuts, and pare down the meat, just a little bit. That appears to be the takeaway from a new study tracking how changes to the typical "Western" diet, subbing in more vegetables and lowering saturated fat content, might contribute to healthy aging . The study, conducted in Australia, fed roughly 100 healthy adults aged 65 to 75 a rotating menu of freshly prepared, unprocessed meals for one month, only changing up how much fat, meat, and carbohydrates different