Perceptions about protein supplements among adults in Saudi Arabia (knowledge and attitude, use, health beliefs, and safety concerns).

Background: Protein supplements have gained popularity among gym users in Saudi Arabia. This study aimed to collect data from adults in Saudi Arabia focusing on six components related to protein supplements: demographic characteristics of participants, health and physical activity information, knowledge and attitudes, use, health beliefs, and safety concerns. Method: This study was a cross-sectional, observational online survey targeting adults in Saudi Arabia. Participants included males and females aged 18 and older. Participants who did not complete the survey, as well as pregnant or breastfeeding women, were excluded. Ethical approval was obtained from the Deanship of Scientific Research at Qassim University. Data were analyzed by gender using SPSS version 25, with descriptive statistics and chi-square tests. A total of 358 participants completed the online questionnaire, while two participants did not complete it between March 29, 2024 and December 31, 2024. Result: Regarding knowledge and attitudes, about 68.2% of participants (including both users and non-users of protein supplements) were aware of protein supplements, with males (81.3%) showing significantly higher awareness than females (63.7%). Additionally, 64.8% of participants (both male and female) were unaware of the risks associated with protein supplements. Of all participants, 56% of males and 39.3% of females did not believe that natural protein sources are enough for muscle building, indicating a significant difference. About 127 participants (35.5%) reported using protein supplements either currently or in the past, with no significant difference between males and females. Of those who reported using protein supplements, 11.8% experienced some side effects and were significantly less knowledgeable about the amount of protein they should consume from food and how much protein is enough for their needs. The majority of protein supplement users (48.8%) did not know if protein powders could contain doping agents, with females reporting significantly higher responses than males. Regarding safety concerns, only 43.3% of protein supplement users looked for protein supplements marked with NSF Certified for Sport Conclusions: There remains a significant need for increased education about the proper use of protein supplements to minimize potential side effects and increase understanding of their health risks and safety concerns.