Growing the Next Generations

Growing healthy children, and in turn healthy future generations, is an enduring endeavour. It begins well before conception, with the nutritional status of both parents influencing health outcomes that can echo decades into the future.

Long before nutrition became crowded with marketing claims and conflicting advice, researchers were already asking important questions about food quality and generational health. Two of the most compelling bodies of work came from careful observation, long-term study, and a willingness to follow the evidence wherever it led.

What Early Research Revealed About Diet and Generational Health

In the 1930s, Dr Francis Pottenger conducted a decade-long study involving more than 900 cats to understand the impact of cooked and processed foods on health. His interest was sparked by a troubling observation in his laboratory - cats fed cooked diets experienced higher illness and mortality.

Pottenger divided the cats into groups. One group was fed an ancestral-style diet of raw meat, raw milk, and cod liver oil. Other groups received various combinations of cooked meat, processed or sweetened milk, and cod liver oil.

The differences were striking. In the first generation of cats consuming cooked and processed foods, signs of decline appeared quickly, including lethargy, poor dental health, skeletal changes, and increased mortality. By the second generation, these issues became more pronounced. By the third generation, the cats were smaller, weaker, with malformed bones, poor coats, fragile teeth, immune disorders, nervous and irritable behaviour, and a dramatic drop in fertility. By the fourth generation, these lines became infertile and eventually died out.

In contrast, the cats fed the ancestral diet remained robust, energetic, fertile, and structurally sound across multiple generations. Their health and vitality continued well beyond the fourth generation, without decline.

Around the same time, similar conclusions were being drawn in human populations by Dr Weston A Price, a dentist who travelled extensively throughout the 1930s studying isolated traditional cultures. His goal was to understand why certain populations experienced exceptional dental health, strong physical development, and low rates of chronic disease.

Price found that traditional societies consuming whole, minimally processed foods, including animal fats, organ meats, seafood, fermented foods, and seasonal plants, had broad dental arches, straight teeth, minimal decay, strong immunity, and excellent reproductive health. When these same populations transitioned to industrialised foods such as white flour, sugar, canned goods, and refined vegetable oils, deterioration occurred rapidly. Dental decay increased, jaws narrowed, illness became more common, and fertility declined.

Price concluded that nutrient density, particularly fat-soluble vitamins A, D, and K₂, was fundamental to generational health, and that traditional diets delivered these nutrients far more effectively than modern processed foods.

Why Fat Quality Matters

Not all fats are equal. Ancestral diets were built around animal fats from livestock grazing in natural ecosystems, or seafood harvested from clean waters, eaten with minimal processing. These foods provided stable saturated fats, along with essential fat-soluble vitamins and trace micronutrients required for growth, immunity, and reproduction.

With this foundation in place, it becomes clear why parental nutrition is so critical when it comes to shaping future generations.

Nutrition Before Conception Shapes Future Health

Research now shows that the nutritional status of both parents in the months leading up to conception is one of the most powerful influences on long-term health outcomes in their children.

The quality of eggs and sperm is directly affected by nutrient availability. Early embryonic development responds to these inputs, and epigenetic markers are established that regulate how genes are expressed throughout life. These changes influence metabolism, immune function, growth patterns, and disease susceptibility, even if children later receive adequate nutrition.

What is especially important is that these effects do not stop with one generation. Evidence from both human and animal studies shows that nutritional deficiencies or imbalances before conception can be passed down to grandchildren and great-grandchildren, affecting fertility, birth weight, metabolic resilience, and chronic disease risk. The preconception period represents a critical window where nutrient density can either strengthen or weaken the biological foundations of multiple generations.

Females form their lifetime supply of eggs before birth. The eggs that will eventually become her children already carry genetic, epigenetic, and metabolic information shaped by her early environment. Males, on the other hand, produce sperm continuously from puberty onwards. This means a man’s nutritional status in the months before conception plays a direct role in fertility, early development, and the long-term health of his children.

During pregnancy, nutrients do far more than build tissues. They influence which genes are activated or silenced ("turned on or off") in fetal cells. Maternal diet shapes the epigenetic landscape of the placenta and fetus, affecting brain development, immune function, metabolic health, and organ formation. The placenta itself responds to maternal nutrition and gut health, acting as a key mediator between mother and baby.

After birth, nature continues this design. Breastfed infants are nourished by a fat-rich diet that supports rapid brain growth and neurological development. To support resilient, well-wired brains, mothers and infants require the kinds of fats human biology has evolved to expect - those found in whole, pasture-raised animal foods and wild-caught seafood, rather than industrially extracted seed oils.

The Modern 'Mismatch'

There is a growing mismatch between what developing bodies and brains require (stable, nutrient-dense fats), and what modern food systems predominantly supply (cheap, ultra-processed fats that promote inflammation). This disconnect has implications not only for physical health, but also for mental wellbeing, vitality, longevity, and reproductive resilience across generations.

Nourishment From the Land

Everything we have explored comes back to nutrient density, food grown in alignment with nature, and the role of quality animal foods in supporting fertility, development, and long-term health across generations. At Native Angus Beef, this is not a concept; it's the foundation of how we farm.

Our cattle graze biodiverse pastures at Arrawatta Station, finishing naturally on grass in rhythm with the seasons. This style of farming supports the accumulation of the saturated fats, fat-soluble vitamins, and micronutrients that traditional diets once relied on, and that modern research continues to show are critical for metabolic health, reproduction, and early development. The natural yellow colour of our fat reflects these pasture-derived nutrients, stored exactly as nature intended.

I remain deeply grateful for these remarkable animals. Through their unique four-chambered digestive system, cattle convert grasses and plants into nourishing food that humans can eat and genuinely thrive on. It is a process that links soil health, animal wellbeing, and human health into one continuous cycle, and one that has quietly supported strong, resilient generations for thousands of years.

By Susan Hendry, Co-Founder Native Angus Beef

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