The American diet: One continuous snack? And why more people skip lunch than breakfast

By Elaine WATSON

- Last updated on GMT

Alanna Moshfegh: Analysis of macronutrient intakes over the period 1977/78 to 2007/08 shows that fat consumption went down, protein consumption remained steady, and carbohydrate intakes went up… along with obesity levels
Alanna Moshfegh: Analysis of macronutrient intakes over the period 1977/78 to 2007/08 shows that fat consumption went down, protein consumption remained steady, and carbohydrate intakes went up… along with obesity levels

Related tags Nutrition

The percentage of energy derived from snacks in the American diet has increased from 12% in the late 1970s to 24% in 2009/10 as more people graze throughout the day rather than sitting down to three square meals, according to analysis of National Health and Nutrition Examination Surveys (NHANES) data.

Speaking at an event hosted by the Peanut Institute in Napa Valley on May 4-6 (click here​), Alanna Moshfegh, research leader in the food surveys research group at USDA’s agricultural research service, said that the average number of eating occasions per day increased from 3.9 in the late ‘70s to 5.6 in 2009/10.

She added: “In the late 1970s, 40% of Americans said they had eaten no snacks the previous day.”

Fast forward 30 years, she said, and that number dropped to just 4%, with 56% of Americans reporting eating three or more snacks a day.

Snacking habits are also beginning earlier, with almost a third (32%) of children aged 12-23 months now regularly consuming chips, popcorn or pretzels, and 19% eating candy, she said.

More Americans are likely to skip lunch than breakfast

Interestingly, NHANES data also shows that Americans are now more likely to skip lunch than breakfast, with 85% reporting eating breakfast the previous day compared with only 80% reporting eating lunch.

Another striking change in eating habits over the past 30 years has been the rise in pizza consumption, with only 3% of adults in 1977/78 reporting eating pizza the previous day compared with 10% in 2007/8, she revealed.

The change is even more pronounced in young people, with 6% of children aged 2-19 years reporting eating pizza the previous day in 1977/78, compared with 20% in 2007/8, she said.

pizza-cheese-plain
According to NHANES data 20% of 2-19 year olds reported eating pizza the previous day in 2007/8 compared with 6% in the late 1970s

Meanwhile, the number of calories that pizza contributes to the diet of pizza-eaters has also increased considerably over the same period, she said, with pizza contributing on average 453 calories to the daily energy intakes of pizza eaters in the late 1970s, compared with 666 calories in 2007/8.

Fruit consumption has remained consistent, while vegetable consumption has decreased

As for fruit, consumption has been pretty consistent in the past 30 years, with Americans consistently reporting 0.9 portions per day over the 30-year period.

However, vegetable consumption decreased from an average of 2.6 portions a day in the late 1970s to just 1.9 portions in 2007/8 (the definition of vegetables includes French Fries and the definition of fruit includes fruit juice), she said.

apples-bananas-istock-Peter Hibberdjpg
Fruit consumption has remained pretty consistent over the past 30 years

Worryingly, while 12% of Americans surveyed in the late 70s reported eating no fruit or veggies the previous day, this figure had risen to 25% three decades later, she added.

As for milk, the percentage of Americans reporting consuming no milk the previous day also rose from 34% in the late 70s to 54% 30 years later, she said.

obesity-istock-Ekaterina Monakhova

Finally, analysis of macronutrient intakes over the period 1977/78 to 2007/08 show that fat consumption went down, protein consumption stayed fairly steady, and carbohydrate intakes went up… along with obesity levels.

Click here​ to read more coverage of the Peanut Institute event in Napa Valley. 

Click here​ to read about recent changes to soft drinks consumption showing up in the NHANES data. 

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'convenience foods' in supermarkets

Posted by Mary,

Just because the shops have a huge proportion of floor space dedicated to these things doesn't mean they have to be bought.

As for frozen pizzas - what's easier to make from scratch than a pizza ?

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social shifts

Posted by JA Larson,

The largely invisible issues are the large societal/social changes. Huge increases in single parent families and dual-income families. Significant amounts of time commuting (1.5 hrs/day for kids).
That translates into TIME shortfalls.
The bill payers become meals and sleep.
That's why most meals are eaten out and why 'convenience' foods are eaten in. Go to the grocery store and count how much floor space is devoted to processed foods. Watch the Jamie Oliver videos where he visits homes and opens the refrigerators (frozen pizza top to bottom).

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