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Life Sciences => Physiology & Medicine => Topic started by: MarianaM on 03/09/2019 14:34:03

Title: Is there a food thatís more nutritionally dense than physically dense?
Post by: MarianaM on 03/09/2019 14:34:03
Trent asks...

Is there any food thatís more nutritionally dense than it is physically dense? Meaning, if you eat 100 g of it before going to bed, youíll wake up 200 g heavier (or at least 101 g heavier?)

What do you think?
Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: Halc on 03/09/2019 15:43:12
Quote from: Trent
Is there any food thatís more nutritionally dense than it is physically dense? Meaning, if you eat 100 g of it before going to bed, youíll wake up 200 g heavier (or at least 101 g heavier?)
Mass cannot just be created from nowhere.  You can consume 100g of hypothetical super food with 10,000 calories in it and you will mass exactly 100g more until you take on additional mass in the form of say air or water.

So I might gain more than 1g by eating a gram of salt, but that's because it makes me thirsty and I retain more of the water I drink to rebalance my salinity level.
Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: alancalverd on 03/09/2019 17:58:37
In a word, no. "Conservation of mass" was your first chemistry lesson, and "you are what you eat" was your first compulsory games lesson when it was too wet to play outside. But that was back in the day when school was about learning, not self-expression.
Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: Bored chemist on 03/09/2019 19:08:14
If your hash brownies give you the munchies...?
Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: syhprum on 14/09/2019 14:36:03
I think what the correspondent had in mind was are there any foodstuffs that contained a lot of energy in relation to their mass, Mars bars come to mind.
Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: alancalverd on 14/09/2019 23:12:06
Or glucose, or oil, or Brazil nuts. But none will increase your mass by more than the mass you eat.

But suppose we could find an edible plant that converts atmospheric carbon dioxide into fat or protein that we then absorb as food without digesting the original plant, rather like termites farming fungi inside their mounds. The human body can then become a self-sustaining biosphere, independent of farms or shops.
Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: Bored chemist on 15/09/2019 10:00:01
Or glucose, or oil, or Brazil nuts. But none will increase your mass by more than the mass you eat.

But suppose we could find an edible plant that converts atmospheric carbon dioxide into fat or protein that we then absorb as food without digesting the original plant, rather like termites farming fungi inside their mounds. The human body can then become a self-sustaining biosphere, independent of farms or shops.

Title: Re: Is there a food thatís more nutritionally dense than physically dense?
Post by: alancalverd on 15/09/2019 23:21:54
My hero.