If you’ve spent any time exploring modern health care outside the traditional system, you’ve likely encountered functional medicine. More recently, you may be hearing about longevity medicine.

They sound similar. They often attract the same patients. And they share some tools.

But they are not the same thing.

Understanding the difference can clarify what kind of care you’re actually getting—and whether it matches your long-term goals.

Many gay men reach their 50s wishing they had started caring for their metabolism, strength, sexual vitality, and emotional health sooner. In this article, Dr. Gabriel Felsen breaks down the most common regrets—and how modern longevity medicine can help you change your trajectory starting today.