Adults aged 20 years and over, 57 to 6% used a dietary supplement in the past 30 days, and use was greater among women (63.8%) than among men (50.8%). The consumption of dietary supplements increased with age, in general and in both sexes, and was higher among women aged 60 years and over (80.2%). To establish significant differences between the proportion of each age group and sex in the entire sample and among supplement users, the statistical goodness of fit test with the chi-square format was used. Figures 3 and 4 show the concomitant use of nutritional supplements by age group and status in both sexes.
The survey was conducted online in English and included a national sample of 2,006 adults aged 18 and over living in the United States, including 1,529 of those considered to be supplement users. Observed supplement consumption was also comparatively high among female athletes between 24 and 29 years of age (figure). The second most popular category is specialty supplements (40 percent), followed by herbal and botanical supplements (39 percent), sports nutrition supplements (28 percent) and weight management supplements (17 percent). Among all age groups, adults between 35 and 54 years of age consume the most dietary supplements, with 81 percent.
A “typical” supplement user is a man, between 24 and 29 years old, who plays sports professionally and consumes a combination of supplements. These types of supplements are taken orally, either in capsule, tablet, powder, or liquid form. In this case, the survey has a credibility interval of plus or minus 2.5 percentage points for all respondents, and plus or minus 2.9 percentage points for supplement users. The survey reports that most men and women over the age of 18 take dietary supplements, which is consistent with the results of previous surveys.
While the change in the sample appears to be small (3 to 4%), it suggests that the characteristics of the groups identified (a combination of sex, age and condition) were related to the use of supplements in the athlete population. The most predominant age group among male athletes who consumed supplements was 24 to 29 years old (31.6%), while the highest proportion (34.6%) of women who consumed supplements was the 19 to 23 year old group (figure). Comparison of the relative percentage (Y-axis) of athlete subgroups between the entire sample (n%, 3%, 87%) and the sample of supplement users (n%, 3D, 520). Vitamins A (retinol), D, E, and K are stored in the liver and in body fat stores, so you don't need to take them every day.
Male professional players between 30 and 34 years old and non-professional athletes between 24 and 29 years old also represented a significant proportion of supplement users. The consumption of each supplement represents 100% in itself (which happens if all the athletes who use it have reported that they have consumed it) and the declared consumption of each supplement by age group and state has been grouped to facilitate comparison between subgroups.
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