New research links muscle loss to metabolic slowdown in older adults

A recent health program aired on KOTA-TV detailed how the body’s energy systems change as people get older. The segment featured medical experts who explained that metabolism involves more than just weight management. It is the fundamental process that allows cells to function, from thinking to fighting infection.

Dr. Rhea Rogers, a board-certified physician, described metabolism as the language of cells. She noted that mitochondria act as battery packs that supply energy to every organ. Rogers said the brain and heart require high amounts of power. When that power depletes, symptoms appear quickly in sensitive areas like the eyes and ears. She stated that low energy production leads to brain fog and fatigue.

Gerontologist “Sam” Cradduck compared the body to a power plant. He emphasized that metabolism affects how older adults process medications. Rogers added that aging is effectively the loss of cellular energy. This progressive loss explains the physical symptoms associated with getting older. The experts argued that focusing solely on weight gain or loss misses the bigger picture of metabolic health.

The program highlighted the link between muscle mass and metabolic efficiency. Rogers explained that muscles take up glucose for energy. When muscles stop absorbing glucose, insulin resistance can develop. This condition is a precursor to prediabetes and type 2 diabetes. Rogers said that building more muscle helps the body process glucose more effectively. She also cited metabolic inflexibility, a loss of the ability to switch between using fat and carbs for energy.

Aging expert Amy O’Rourke warned that many people overlook strength as they age. She observed that individuals often focus on weight loss and forget the need for physical strength. O’Rourke said gaining weight can be positive if it comes from muscle rather than fat. She recommended strength training two to three times a week for older adults. She advised younger viewers to start now to prevent a cascading decline in function later.

Katherine Ambrose, an aging well coach, suggested that the goal should be creating health rather than just managing disease. Rogers listed specific actions to support metabolism. These include muscle stimulation, controlling inflammation, and removing toxins. She also stressed the importance of good nutrition and sleep. The experts concluded that a healthy metabolism provides the physical strength needed to stay capable in daily life.