Protein, poop pills, breast cancer risk & one-day workouts

Sunday · 7:44 AM ET · Better Habits. Healthier Habitat.

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Every 7 days, we begin here with 4x4 box breathing.

Soften your jaw. Let your tongue relax from the roof of your mouth. Drop your shoulders. Take one round, or stay for a few until you feel grounded.

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Welcome back to The Nest
Somehow, August 7th marks the halfway point of summer. Consider this your reminder to use the summer days you’ve been saving for later, and if you’re up late this week, look up for the Perseid meteor shower.

A line to carry
“How we spend our days is, of course, how we spend our lives.”
Annie Dillard

In today’s digest, we’ll be discussing:

Protein is having a moment. It’s in cereal, coffee, pancakes, snacks and just about anything that can fit “20g of protein” on the label. But a review of more than 350 studies is raising a less trendy question: could some of us actually be eating more than we need?

Much of the research linking lower protein intake to healthier aging comes from animals, where restricting protein or certain amino acids has been associated with improved metabolism, less inflammation and longer lifespan. Human evidence is much less conclusive, and protein remains especially important for active people, older adults and anyone trying to build or preserve muscle. The bigger takeaway may be that protein needs aren’t one-size-fits-all.

Takeaway: More protein isn’t automatically better. Rather than trying to maximize it at every meal, the goal may be getting enough for your age, activity level and needs. Maybe your water doesn’t need 20 grams of protein after all.

It sounds like a wellness headline designed to stop your scroll, but researchers are seriously testing whether changing the gut microbiome could improve chronic insomnia.

In a small trial of 80 adults with chronic insomnia, researchers gave participants capsules containing fecal microbiota from healthy donors after a short course of antibiotics. Those who received the treatment saw improvements in sleep efficiency and spent less time awake during the night compared with the placebo group, with some benefits lasting for months. The findings offer another intriguing piece of evidence for the connection between the gut and sleep.

There are plenty of reasons not to get ahead of ourselves. The study was small, antibiotics were part of the treatment, and fecal microbiota transplantation remains experimental for insomnia. Researchers still need to determine which bacteria might matter and whether there are safer, more targeted ways to influence them.

Takeaway: Please do not add poop pills to your nighttime routine. But the study is another reminder that sleep may be influenced by much more than what happens in the brain.

For younger women, family history has long been one of the main signals used to decide who should receive a closer breast cancer risk assessment. But new research suggests that approach may be missing a large majority of women who eventually develop the disease.

Researchers looking at women under 50 in England found that current referral criteria, which rely heavily on family history, identified only about 4% of those who went on to develop breast cancer within 10 years. Around 73% of those women had no family history of the disease at all. A broader risk model that also considers genetics, reproductive history and lifestyle factors was able to identify substantially more women at increased risk.

The findings don’t mean family history is unimportant. They suggest it may be only one part of a much larger risk picture, and researchers are calling for more comprehensive ways to identify younger women who may benefit from earlier monitoring or prevention.

Takeaway: Not having breast cancer in your family doesn’t mean having no risk. As screening becomes more personalized, factors beyond family history may increasingly help determine who deserves a closer look.

Which of these typically contains the most potassium per serving?

A. One medium banana

B. One medium baked potato

C. One cup of cooked lentils

D. One cup of cooked acorn squash

Answer below ↓

A busy week doesn’t necessarily mean exercise is a lost cause. Research involving 315 adults with abdominal obesity found that completing 75 minutes of interval exercise on one day each week produced reductions in body fat and improvements in fitness that were surprisingly similar to spreading the same total amount of exercise across three days.

There is, of course, a catch. The once-weekly group still completed a full 75 minutes of structured interval exercise. This wasn’t one quick walk around the block and calling it a week. But the findings suggest that when life gets busy, exercise may not need to be perfectly spaced throughout the week to be worthwhile.

Takeaway: Consistency doesn’t have to mean doing something every day. If three or four workouts aren’t realistic, making the time you do have count may be much better than waiting for the perfect schedule.

🪑 Sitting up straight might actually change how you feel. People encouraged to sit upright reported slightly better moods and decision-making. The effects were small, but it’s another reason to check your posture.

😴 A wearable patch helped people get more REM sleep. Gentle ultrasound helped participants reach REM sooner and spend more time there. Promising, but still very early research.

🧠 Scientists may have found part of the brain’s “keep going” system. Certain neurons became more active as earning a reward required more effort, offering another clue into the biology behind motivation.

🐟 The fish oil conversation just got more nuanced. Lower doses weren’t linked to increased atrial fibrillation risk, while higher prescription-level doses showed a small increase. Dose may matter more than simply whether you take omega-3s at all.

🐝 A common weedkiller may be messing with the bees. Honeybees exposed to glyphosate foraged 13% less and showed changes in brain chemistry. Small behavioral shifts can add up quickly across an entire hive.

Vea in the Kitchen is a food and wellness creator known for making healthy eating feel colorful, creative, and genuinely enjoyable. Her content centers around nourishing recipes, fresh ingredients, wellness drinks and mocktails, with an approach that feels less like following a strict “healthy” diet and more like finding foods you actually look forward to making and eating.

Why follow: Her recipes are vibrant, visually beautiful, and full of inspiration for anyone looking to bring more nourishing, feel-good food into their routine without taking the fun out of eating.

Follow her here:

Instagram @Veainthekitchen ↗
TikTok @Veainthekitchen ↗

B. One medium baked potato

Bananas get most of the potassium attention, but a baked potato can provide considerably more per serving.

Try this week:
Rotate your potassium sources instead of automatically reaching for a banana.

Fruit
🍑 Peaches · 🫐 Blueberries · Blackberries · Raspberries
🍉 Watermelon · 🍈 Cantaloupe · Nectarines · Plums · 🍇 Grapes · Figs

Vegetables
🍅 Tomatoes · 🌽 Sweet corn · 🥒 Cucumbers · 🫑 Bell peppers · 🍆 Eggplant · Green beans · Zucchini · Summer squash · Okra · 🧅 Onions · 🌿 Fresh herbs

_{Seasonal availability may vary by region and growing conditions.}

If this brought a little calm or clarity to your Sunday morning, send it to someone who would appreciate it too.

If this week’s quote resonated with you, reply with one of your favorites.

We’ll choose one reader submission for next week’s line to carry.