Despite what you may have heard, your stomach doesn't actually shrink with age, Hobbins says. But there do seem to be changes to the stretchiness of your tummy that happen alongside aging that mistakenly tell the brain you're full when you're not, she says, leading some older folks to lose weight as they age.
If you have a big meal, your stomach doesn't magically get bigger and stay that way—it shrinks back down to its previous size in about four hours or less as your food is pushed along to the small intestine, Staller says.
Our stomachs have a reflex called receptive relaxation: As food enters your stomach, the muscles relax and expand out to accommodate more volume. In fact, your stomach can expand up to five times its volume after a meal as compared to before.
The physiological changes that occur with ageing that can impair appetite include changes to the digestive system, hormonal changes, disease, pain, changes to the sense of smell, taste and vision and a decreased need for energy. Changes to the digestive system can contribute to declining appetite.
Traditionally, the “elderly” are considered to be those persons age 65 and older.
“As we age we generally are less active,” says Dr. Hodges. “On average people over the age of 60, and certainly older than 70, have a lower need for energy than when they were younger because they expend less energy, with energy being calories. Generally speaking, their caloric needs are lower because they do less.”
Myth or Fact: If you cut down on your food intake, you'll eventually shrink your stomach so you won't be as hungry. Answer: Myth. Once you are an adult, your stomach pretty much remains the same size -- unless you have surgery to intentionally make it smaller.
An expanding waistline is sometimes considered the price of getting older. For women, this can be especially true after menopause, when body fat tends to shift to the abdomen. Yet an increase in belly fat does more than make it hard to zip up your jeans. Research shows that belly fat also carries serious health risks.
And from a realistic perspective, you'd be right: sucking in your stomach, or doing "stomach vacuums", won't be able to trim your waistline or net you a six-pack. But it can help develop some deep internal ab muscles, helping your posture, lower-back pain and core strength.
Cardio such as swimming, aerobics, running or dancing will burn this excess fat store. HIIT (High-Intensity Interval Training) is the fastest way to trim down stomach fat.
Gastric bypass is surgery that helps you lose weight by changing how your stomach and small intestine handle the food you eat. After the surgery, your stomach will be smaller. You will feel full with less food.
Tissue loss reduces the amount of water in your body. The amount of body fat goes up steadily after age 30. Older people may have almost one third more fat compared to when they were younger. Fat tissue builds up toward the center of the body, including around the internal organs.
Epidemiologists have observed that the average person typically puts on 1 to 2 pounds a year from early adulthood through middle age. The CDC's numbers show that much of the increase is concentrated in the 20s, for men and women.
As a result, losing belly fat often takes hard work, especially if you're in your 40s or older. That's because your hormones and your belly fat affect each other, and as your hormone levels change during middle age, fat around your midsection tends to accumulate faster than it does in other areas.
Overeating causes the stomach to expand beyond its normal size to adjust to the large amount of food. The expanded stomach pushes against other organs, making you uncomfortable. This discomfort can take the form of feeling tired, sluggish or drowsy.
The sugar in sweet foods stimulates a reflex that expands your stomach, writes senior researcher Arnold Berstad and assistant doctor Jørgen Valeur from Lovisenberg Diakonale Hospital in the latest issue of The Journal of the Norwegian Medical Association.
What should your waist measurement be? For men, a waist circumference below 94cm (37in) is 'low risk', 94–102cm (37-40in) is 'high risk' and more than 102cm (40in) is 'very high'. For women, below 80cm (31.5in) is low risk, 80–88cm (31.5-34.6in) is high risk and more than 88cm (34.6in) is very high.
The researchers found that people who cut their calories slowed the pace of their aging by 2% to 3%, compared to people who were on a normal diet. That translates, Belsky said, to a 10% to 15% reduction in the likelihood of dying early. "We all have the power to change the trajectories of aging," he said.
A significant amount of the body's growth begins to take place around ages 10-12 and peaks around 13-14. Because a teen's body is growing and developing so much at this time, they have higher metabolic needs. This means they need more calories and more vitamins and minerals, especially certain ones like calcium.
For men, the effect is similar: they generally expend 100-200 fewer calories per day each decade between their 30s and age 70, with a 25 per cent decline of muscle mass. Hence it's important to reduce calorie intake each passing decade.