Is Our Food Becoming Less Nutritious?

Veritasium · 2.1M views · 2018 · 7:30

Open on YouTube

Nutrition & diet scienceEnvironment, agriculture & food systemsScientific method & science communicationexplainer

Why Hacker News recommends it

HN people recommend it as a short, contextualizing explainer on declining crop nutrient density.

What it is

Veritasium examines whether food has become less nutritious, weighing soil depletion, selective breeding and rising atmospheric CO2. It evidences nutrient decline even in weeds over a century and ties it to faster plant growth.

Recommended by 2 HN commenters across 2 different months, 2019 to 2022.

What Hacker News said

Recommends gholap · 2019-08 · on “Nutrient deficiencies in rice grown under higher carbon dioxide”

"Is Our Food Becoming Less Nutritious?: Veritasium"[1] is a good short video that puts this into context. [1]: [this video]

Recommends dghughes · 2019-09 · on “Estimates that mineral levels in vegetables have dropped by up to 90% since 1914”

Derek from Vertasium on YouTbe has a nice explanation. Even showing how the nutrient levels in weed specimens are also falling. The weeds were collected by researchers over the last 100 or more years. The weeds were vital because it showed it wasn't limited to farming practices it's all plants. [this video]

Cites rdedev · 2021-06 · on “Challenges in the diagnosis of magnesium status”

Veritasium did a video on this topic of vegetables becoming less nutritious [this video] He argues that the increased CO2 in the atmosphere is making the plants grow faster. This is making the plants produce more carbs wet to other nutrients, making the plant less nutritious compared to the past

Cites steve_adams_86 · 2022-07 · on “A genetic modification boosts grain yields, shortens the growth duration of rice”

It hasn't actually been shown that it's the strain variation because identical strains (giving wild plants as samples) are shown to have the same declines. There's no known reason, but one decent hypothesis is that the atmosphere is changing and plants are bulking faster due to the increase of CO2. This is something you can demonstrate in a grow tent by venting in CO2. When plants have higher CO2 they increase the synthesis of carbohydrates, sugars and starches, and they decrease concentrations of protein and nutrients. This details someone of these details, including references to some of the studies you linked. Worth noting is that if GMO varieties had stark differences in nutrient content