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If your recommend protein intake is 70 grams per day (meaning you weigh about 195 pounds / 87 kg) and you’re only getting 20 grams per day, then you are likely already experiencing health issues.
From https://www.verywellhealth.com/protein-deficiency-symptoms-8756264 you could expect to experience:
- Weakness and fatigue, meaning you’ll feel exhausted - mentally, physically, or both
- Skin, Hair, and Nail Problems
- Mood changes, including the development of mood disorders, such as depression
- Compromised immune system
- Slowed wound healing
- Decline in bone strength
- Fatty liver
- Weight loss due to your muscles and organs being broken down - but my understanding is this is mostly relevant if your overall caloric intake is quite low (starvation levels)
- Weight gain due to fluid retention or increased hunger
Not all of those are immediately noticeable.
However, I’m with the other commenter who said that they think it’s likely that you’re under-estimating your daily protein intake. What method did you use for tracking and calculating it?
PSN had 129 million MAU in December 2024. Source. That’s less than Steam had in 2021 - 132 million MAU. Source.
Across all platforms, including Xbox and PC, Microsoft reported 500 million MAU in the fiscal quarter ending June 2024. Source.