When it comes to technology, politics and nutrition, a lot has changed in the United States since 1977. Researchers from the University of North Carolina examined food trends between 1977 and 1996 and found that many Americans eat more meals away from home.

Using data from two nationwide dietary intake surveys that included more than 63,000 people, the researchers calculated the percentage of calories from food eaten at home or in restaurants or cafeterias or from vending machines. The survey results were divided by age groups: 2- to 18-year-olds, 19- to 39-year-olds, 40- to 59-year-olds, and people 60 years and older.

Across all age groups, the prevalence of eating outside the home and overall snacking increased. For example, in 1977, about 10% of all meals were from fast food. By 1996, almost 24% of all meals eaten were from fast food. In addition, researchers found that consumption of foods such as pizza, French fries, soda and candy was increased in 1996, compared to decreased consumption of beef, pork and low- and medium-fat milk.

Minimizing the meals you eat out may prevent excess weight gain. Try these tips for making time eating at home easier:

• Plan ahead. Use a weekend day to plan your meals for the upcoming week. Scan recipe books for easy meals that are simple to prepare at the end of the day. Create a grocery list, and shop for the upcoming week's meals over the weekend.
• Double up. Double or triple the amounts in the recipe so you'll have extra to pack in lunches or for the next day's meal. The key here is to save the leftovers, not serve yourself seconds!
• Reward yourself. Make healthy cooking easier with quality tools and nifty appliances, such as nonstick cookware (no oil or butter needed) or steamers (which cook vegetables, rice and lean meats without added fats).

Related information Food choices

Sources:  Nielsen SJ, Siega-Riz AM, Popkin BM. Trends in energy intake in U.S. between 1977 and 1996: similar shifts seen across age groups. Obesity Research 2002 May;10(5):370-8.