"Neurologists' Tips for Maintaining Mental Sharpness at Biden's Age"

President Joe Biden's cognitive capabilities are under scrutiny again, prompting experts to offer five tips for maintaining brain sharpness into old age: live like you're in a Blue Zone, manage diet and exercise, take a probiotic with herbal tea, socialize regularly, and keep trying new things to improve neural plasticity. These tips include incorporating moderate activity, following the Mediterranean Diet, taking a probiotic supplement, engaging in social activities, and trying new experiences to maintain brain health.