Some men in their 60s will start to notice a rapid decline in their physical health and mental state, according to Jerry Bailey, D.C., M.S., an acupuncturist and chiropractic and functional medicine physician at Lakeside Holistic Health, with offices in Idaho and Washington.

"They often become more reserved, more emotional, less connected to everyone around them," he said. "Their bodies change rapidly in the loss of muscle mass, increase in fat mass, along with brain function decline."

That all sounds a bit doom and gloom, but it doesn't have to be that way.

"Taking simple steps to improve your health will increase longevity," Bailey added.

Let's look at four major issues and the steps you can take to live your best life.

Memory and brain function

"Men will notice cognition and memory decline, often leading to confusion and aggression with their moods," Bailey explained.

Scientists are not certain as to why age-related cognitive decline happens, but Bailey said several