Four scientific findings worth a closer read
Four studies on protein, diabetes and exercise: who each one included, what it found, and its limits.
Every day you hear advice about food, exercise and health, from friends, from social media, and from specialists.
But a piece of advice being widely repeated doesn’t mean the evidence behind it is strong; every study has participants and limits that should be read with it.
So we chose four findings, from protein to diabetes and exercise: some revisit a common piece of advice and some answer a new question. We read who each study included, what it found, and its limits.
of adults in the Kingdom say they do 150 minutes or more of physical activity a week, with the highest rate, 63.0%, among 18 to 29 year olds.
Can the body benefit from more than 30 grams in a meal?
In a trial on 36 young men after resistance exercise, muscle protein synthesis over 12 hours was 30% higher with 100 grams than with 25, because its digestion lasted longer:
Does plant protein build muscle like animal protein?
The previous study measured the response after a single meal; this one followed 38 young men training for 12 weeks, half of them vegans taking plant protein (soy) and the other half animal protein (whey), the same amount: 1.6 grams per kilogram of body weight a day:
In this trial, at the same amount, no notable difference appeared. Vegans needed more of the supplement: 58 grams of soy a day, versus 41 of whey.
Can type 2 diabetes go into a remission phase?
In a trial on 96 adults aged 18 to 45 who were diagnosed with type 2 diabetes in the last six years and have obesity, one group followed a 24-week programme (12 weeks of an 800 to 900 calorie diet with supervised exercise, then 12 weeks of weight maintenance) and was compared with a group that received usual care:
Remission here means HbA1c below 6.5% without glucose-lowering drugs, and it is not a permanent cure. The result applies to those who followed the programme under medical supervision; anyone taking diabetes medication should consult their doctor before any change.
Are four minutes of exercise enough for older adults?
In a trial on 97 people over 65, leg strength and balance improved within 12 weeks with a daily routine of four exercises lasting four minutes:
Picks from the lab
In a randomised trial on 117 adults with knee osteoarthritis, an inulin supplement, a fibre that feeds gut bacteria, reduced pain over six weeks and improved grip strength.
ScienceDaily, on Nutrients, 27 October 2026An observational study followed 12,772 adults for about eight years, and thinking and memory declined 62% faster in the heaviest sweetener consumers, though the study cannot show that sweeteners are the cause.
American Academy of Neurology, on Neurology, 3 September 2025What do we take from the 100 gram trial?
One trial doesn’t give a general recommendation, and the right amount for you is for a dietitian to decide.
Which tip you’ve heard do you want us to check?
Send it to editorial@saudifoodtech.sa, and we may dedicate an upcoming issue to it.
Sources
- General Authority for Statistics, Physical Activity Statistics 2026, from the National Health Survey and the Women and Child Health Survey (22 October 2026).
- Trommelen et al., Cell Reports Medicine (19 December 2023), and MySportScience.
- Hevia-Larraín et al., Sports Medicine (2021), via NutraIngredients (3 January 2022).
- Healio, type 2 diabetes remission trial (7 October 2026), on The Lancet Regional Health – Americas.
- Penn State University, the four-minute exercise trial, PLOS One (9 June 2026).
- ScienceDaily, inulin and knee osteoarthritis trial, on Nutrients (27 October 2026).
- American Academy of Neurology, study of artificial sweeteners and cognitive decline, Neurology (3 September 2025).
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